ГОСТ 23862.1-79

GOST 33729-2016 GOST 20996.3-2016 GOST 31921-2012 GOST 33730-2016 GOST 12342-2015 GOST 19738-2015 GOST 28595-2015 GOST 28058-2015 GOST 20996.11-2015 GOST 9816.5-2014 GOST 20996.12-2014 GOST 20996.7-2014 GOST P 56306-2014 GOST P 56308-2014 GOST 20996.1-2014 GOST 20996.2-2014 GOST 20996.0-2014 GOST 16273.1-2014 GOST 9816.0-2014 GOST 9816.4-2014 GOST P 56142-2014 STATE STANDARD P 54493-2011 GOST 13498-2010 STATE STANDARD P 54335-2011 GOST 13462-2010 STATE STANDARD P 54313-2011 GOST P 53372-2009 GOST P 53197-2008 GOST P 53196-2008 GOST P 52955-2008 GOST P 50429.9-92 GOST 6836-2002 GOST 6835-2002 GOST 18337-95 GOST 13637.9-93 GOST 13637.8-93 GOST 13637.7-93 GOST 13637.6-93 GOST 13637.5-93 GOST 13637.4-93 GOST 13637.3-93 GOST 13637.2-93 GOST 13637.1-93 GOST 13637.0-93 STATE STANDARD 13099-2006 GOST 13098-2006 GOST 10297-94 GOST 12562.1-82 GOST 12564.2-83 GOST 16321.2-70 GOST 4658-73 GOST 12227.1-76 GOST 16274.0-77 GOST 16274.1-77 GOST 22519.5-77 GOST 22720.4-77 GOST 22519.4-77 GOST 22720.2-77 GOST 22519.6-77 GOST 13462-79 GOST 23862.24-79 GOST 23862.35-79 GOST 23862.15-79 GOST 23862.29-79 GOST 24392-80 GOST 20997.5-81 GOST 24977.1-81 GOST 25278.8-82 GOST 20996.11-82 GOST 25278.5-82 GOST 1367.7-83 GOST 26239.9-84 GOST 26473.1-85 GOST 16273.1-85 GOST 26473.2-85 GOST 26473.6-85 GOST 25278.15-87 GOST 12223.1-76 GOST 12645.7-77 GOST 12645.1-77 GOST 12645.6-77 GOST 22720.3-77 GOST 12645.4-77 GOST 22519.7-77 GOST 22519.2-77 GOST 22519.0-77 GOST 12645.5-77 GOST 22517-77 GOST 12645.2-77 GOST 16274.9-77 GOST 16274.5-77 GOST 22720.0-77 GOST 22519.3-77 GOST 12560.1-78 GOST 12558.1-78 GOST 12561.2-78 GOST 12228.2-78 GOST 18385.4-79 GOST 23862.30-79 GOST 18385.3-79 GOST 23862.6-79 GOST 23862.0-79 GOST 23685-79 GOST 23862.31-79 GOST 23862.18-79 GOST 23862.7-79 GOST 23862.1-79 GOST 23862.20-79 GOST 23862.26-79 GOST 23862.23-79 GOST 23862.33-79 GOST 23862.10-79 GOST 23862.8-79 GOST 23862.2-79 GOST 23862.9-79 GOST 23862.12-79 GOST 23862.13-79 GOST 23862.14-79 GOST 12225-80 GOST 16099-80 GOST 16153-80 GOST 20997.2-81 GOST 20997.3-81 GOST 24977.2-81 GOST 24977.3-81 GOST 20996.4-82 GOST 14338.2-82 GOST 25278.10-82 GOST 20996.7-82 GOST 25278.4-82 GOST 12556.1-82 GOST 14339.1-82 GOST 25278.9-82 GOST 25278.1-82 GOST 20996.9-82 GOST 12554.1-83 GOST 1367.4-83 GOST 12555.1-83 GOST 1367.6-83 GOST 1367.3-83 GOST 1367.9-83 GOST 1367.10-83 GOST 12554.2-83 GOST 26239.4-84 GOST 9816.2-84 GOST 26473.9-85 GOST 26473.0-85 GOST 12645.11-86 GOST 12645.12-86 GOST 8775.3-87 GOST 27973.0-88 GOST 18904.8-89 GOST 18904.6-89 GOST 18385.0-89 GOST 14339.5-91 GOST 14339.3-91 GOST 29103-91 GOST 16321.1-70 GOST 16883.2-71 GOST 16882.1-71 GOST 12223.0-76 GOST 12552.2-77 GOST 12645.3-77 GOST 16274.2-77 GOST 16274.10-77 GOST 12552.1-77 GOST 22720.1-77 GOST 16274.4-77 GOST 16274.7-77 GOST 12228.1-78 GOST 12561.1-78 GOST 12558.2-78 GOST 12224.1-78 GOST 23862.22-79 GOST 23862.21-79 GOST 23687.2-79 GOST 23862.25-79 GOST 23862.19-79 GOST 23862.4-79 GOST 18385.1-79 GOST 23687.1-79 GOST 23862.34-79 GOST 23862.17-79 GOST 23862.27-79 GOST 17614-80 GOST 12340-81 GOST 31291-2005 GOST 20997.1-81 GOST 20997.4-81 GOST 20996.2-82 GOST 12551.2-82 GOST 12559.1-82 GOST 1089-82 GOST 12550.1-82 GOST 20996.5-82 GOST 20996.3-82 GOST 12550.2-82 GOST 20996.8-82 GOST 14338.4-82 GOST 25278.12-82 GOST 25278.11-82 GOST 12551.1-82 GOST 25278.3-82 GOST 20996.6-82 GOST 25278.6-82 GOST 14338.1-82 GOST 14339.4-82 GOST 20996.10-82 GOST 20996.1-82 GOST 12645.9-83 GOST 12563.2-83 GOST 19709.1-83 GOST 1367.11-83 GOST 1367.0-83 GOST 19709.2-83 GOST 12645.0-83 GOST 12555.2-83 GOST 1367.1-83 GOST 9816.3-84 GOST 9816.4-84 GOST 9816.1-84 GOST 9816.0-84 GOST 26468-85 GOST 26473.11-85 GOST 26473.12-85 GOST 26473.5-85 GOST 26473.7-85 GOST 16273.0-85 GOST 26473.3-85 GOST 26473.8-85 GOST 26473.13-85 GOST 25278.13-87 GOST 25278.14-87 GOST 8775.1-87 GOST 25278.17-87 GOST 18904.1-89 GOST 18904.0-89 STATE STANDARD P 51572-2000 GOST 14316-91 GOST P 51704-2001 GOST 16883.1-71 GOST 16882.2-71 GOST 16883.3-71 GOST 8774-75 GOST 12227.0-76 GOST 12797-77 GOST 16274.3-77 GOST 12553.1-77 GOST 12553.2-77 GOST 16274.6-77 GOST 22519.1-77 GOST 16274.8-77 GOST 12560.2-78 GOST 23862.11-79 GOST 23862.36-79 GOST 23862.3-79 GOST 23862.5-79 GOST 18385.2-79 GOST 23862.28-79 GOST 16100-79 GOST 23862.16-79 GOST 23862.32-79 GOST 20997.0-81 GOST 14339.2-82 GOST 12562.2-82 GOST 25278.7-82 GOST 20996.12-82 GOST 12645.8-82 GOST 20996.0-82 GOST 12556.2-82 GOST 25278.2-82 GOST 12564.1-83 GOST 1367.5-83 GOST 25948-83 GOST 1367.8-83 GOST 1367.2-83 GOST 12563.1-83 GOST 9816.5-84 GOST 26473.4-85 GOST 26473.10-85 GOST 12645.10-86 GOST 8775.2-87 GOST 25278.16-87 GOST 8775.0-87 GOST 8775.4-87 GOST 12645.13-87 GOST 27973.3-88 GOST 27973.1-88 GOST 27973.2-88 GOST 18385.6-89 GOST 18385.7-89 GOST 28058-89 GOST 18385.5-89 GOST 10928-90 GOST 14338.3-91 GOST 10298-79 GOST P 51784-2001 GOST 15527-2004 GOST 28595-90 GOST 28353.1-89 GOST 28353.0-89 GOST 28353.2-89 GOST 28353.3-89 STATE STANDARD P 52599-2006

gost-238621-79.pdf (559.23 KiB)
ГОСТ 23862.1-79

GOST 23862.1−79 Rare-earth metals and their oxides. Spectral method of determination of impurities of oxides of rare earth elements (with Amendments No. 1, 2)

GOST 23862.1−79

Group B59

INTERSTATE STANDARD

RARE EARTH METALS AND THEIR OXIDES

Spectral method of determination of impurities of oxides of rare earth elements

Rare-earth metals and their oxides. Spectral method of determination of impurities in oxides of rare-earth elements

ISS 77.120.99
AXTU 1709

Date of introduction 1981−01−01

The decision of the State Committee USSR on standards on October 19, 1979 N 3988 date of introduction is established 01.01.81

Limitation of actions taken by Protocol No. 7−95 Interstate Council for standardization, Metrology and certification (ICS 11−95)

EDITION with Amendments No. 1, 2 approved in April 1985, may 1990 (IUS 7−85, 8−90).

This standard specifies a method of determining the spectral impurity oxides of rare earth elements in rare-earth metals (previously translated into oxide) and their oxides.

The method is based on excitation of the arc DC and photographic registration of the spectra of the analyte samples and comparison with subsequent determination of content of rare earth impurities in the calibration graphs.

The interval defined by the mass fraction of impurities of oxides:


the oxide of lanthanum:
cerium	from 1·10% 1%
praseodymium	from 1·10% 1%
neodymium	2·10% to 1%
Samaria	from 1·10% 1%
europium	from 1·10% 1%
gadolinium	from 5·10% to 1%
terbium	2·10% to 1%
dysprosium	from 5·10% to 1%
holmium	from 1·10% 1%
erbium	from 5·10% to 1%
thulium	from 5·10% to 1%
ytterbium	from 1·10% 1%
Lutetia	2·10% to 1%
yttrium	from 5·10% to 1%
in the dioxide of cerium:
Lantana	2·10% to 1%
praseodymium	from 5·10% to 1%
neodymium	from 5·10% to 1%
Samaria	from 5·10% to 1%
europium	2·10% to 1%
gadolinium	2·10% to 1%
terbium	from 5·10% to 1%
dysprosium	from 1·10% 1%
holmium	from 5·10% to 1%
erbium	from 5·10% to 1%
thulium	from 5·10% to 1%
ytterbium	2·10% to 1%
Lutetia	from 1·10% 1%
yttrium	2·10% to 1%
the oxides of praseodymium:
Lantana	2·10% to 1%
cerium	from 1·10% 1%
neodymium	from 1·10% 1%
Samaria	from 1·10% 1%
europium	from 5·10% to 1%
gadolinium	from 1·10% 1%
terbium	from 1·10% 1%
dysprosium	2·10% to 1%
holmium	from 5·10% to 1%
erbium	2·10% to 1%
thulium	2·10% to 1%
ytterbium	from 1·10% 1%
Lutetia	from 5·10% to 1%
yttrium	from 5·10% to 1%
the oxide of samarium:
Lantana	from 1·10% 1%
cerium	from 1·10% 1%
praseodymium	from 1·10% 1%
neodymium	from 1·10% 1%
europium	from 5·10% to 1% from 1·10% to 5·10%
gadolinium	from 1·10% 1%
terbium	from 5·10% to 1%
dysprosium	2·10% to 1%
holmium	2·10% to 1%
erbium	from 5·10% to 1%
thulium	2·10% to 1%
ytterbium	from 1·10% 1%
Lutetia	from 5·10% to 1%
yttrium	2·10% to 1%
the oxide of gadolinium:
Lantana	2·10% to 1%
cerium	from 1·10% 1%
praseodymium	from 1·10% 1%
neodymium	2·10% to 1%
Samaria	2·10% to 1%
europium	from 1·10% 1%
terbium	from 1·10% 1%
dysprosium	2·10% to 1%
holmium	2·10% to 1%
erbium	from 5·10% to 1%
thulium	2·10% to 1%
ytterbium	from 1·10% 1%
Lutetia	from 1·10% 1%
yttrium	2·10% to 1%
the oxide of neodymium:
Lantana	2·10% to 1%
cerium	from 5·10% to 1%
praseodymium	from 5·10% to 1%
Samaria	from 5·10% to 1%
europium	from 1·10% 1%
gadolinium	from 1·10% 1%
terbium	from 5·10% to 1%
dysprosium	from 1·10% 1%
holmium	from 5·10% to 1%
erbium	from 1·10% 1%
thulium	2·10% to 1%
ytterbium	from 5·10% to 1%
Lutetia	from 5·10% to 1%
yttrium	from 5·10% to 1%
in oxide europium:
Lantana	from 5·10% to 1%
cerium	from 1·10% 1%
praseodymium	from 1·10% 1%
neodymium	from 1·10% 1%
Samaria	from 5·10% to 1%
gadolinium	from 1·10% 1%
terbium	from 5·10% to 1%
dysprosium	from 1·10% 1%
holmium	from 1·10% 1%
erbium	2·10% to 1%
thulium	from 5·10% to 1%
ytterbium	from 1·10% 1%
Lutetia	from 1·10% 1%
yttrium	from 5·10% to 1%
in oxide of terbium:
Lantana	from 1·10% 1%
cerium	2·10% to 1%
praseodymium	2·10% to 1%
neodymium	from 5·10% to 1%
Samaria	from 5·10% to 1%
europium	2·10% to 1%
gadolinium	from 1·10% 1%
dysprosium	from 5·10% to 1%
holmium	from 1·10% 1%
erbium	from 5·10% to 1%
thulium	from 1·10% 1%
ytterbium	from 5·10% to 1%
Lutetia	from 1·10% 1%
yttrium	from 5·10% to 1%
the oxides of dysprosium:
Lantana	from 1·10% 1%
cerium	from 5·10% to 1%
praseodymium	from 5·10% to 1%
neodymium	2·10% to 1%
Samaria	2·10% to 1%
europium	from 5·10% to 1%
gadolinium	from 5·10% to 1%
terbium	from 5·10% to 1%
holmium	from 1·10% 1%
erbium	2·10% to 1%
thulium	from 5·10% to 1%
ytterbium	from 1·10% 1%
Lutetia	from 5·10% to 1%
yttrium	from 5·10% to 1%
the oxide of erbium:
Lantana	from 5·10% to 1%
cerium	from 5·10% to 1%
praseodymium	2·10% to 1%
neodymium	from 1·10% 1%
Samaria	from 5·10% to 1%
europium	2·10% to 1%
gadolinium	2·10% to 1%
terbium	from 1·10% 1%
dysprosium	2·10% to 1%
holmium	from 5·10% to 1%
thulium	2·10% to 1%
ytterbium	from 1·10% 1%
Lutetia	2·10% to 1%
yttrium	from 1·10% 1%
in the oxide of ytterbium:
Lantana	from 5·10% to 1%
cerium	2·10% to 1%
praseodymium	2·10% to 1%
neodymium	from 5·10% to 1%
Samaria	from 1·10% 1%
europium	from 1·10% 1%
gadolinium	from 5·10% to 1%
terbium	2·10% to 1%
dysprosium	2·10% to 1%
holmium	from 1·10% 1%
erbium	2·10% to 1%
thulium	from 1·10% 1%
Lutetia	2·10% to 1%
yttrium	from 1·10% 1%
in the oxide of holmium:
Lantana	from 1·10% 1%
cerium	2·10% to 1%
praseodymium	from 5·10% to 1%
neodymium	from 1·10% 1%
Samaria	2·10% to 1%
europium	2·10% to 1%
gadolinium	from 5·10% to 1%
terbium	2·10% to 1%
dysprosium	from 5·10% to 1%
erbium	from 5·10% to 1%
thulium	2·10% to 1%
ytterbium	from 1·10% 1%
Lutetia	from 1·10% 1%
yttrium	from 1·10% 1%
in oxide of thulium:
Lantana	2·10% to 1%
cerium	2·10% to 1%
praseodymium	from 1·10% 1%
neodymium	from 1·10% 1%
Samaria	2·10% to 1%
europium	from 5·10% to 1%
gadolinium	2·10% to 1%
terbium	from 1·10% 1%
dysprosium	2·10% to 1%
holmium	from 1·10% 1%
erbium	from 1·10% 1%
ytterbium	from 5·10% to 1%
Lutetia	from 1·10% 1%
yttrium	from 5·10% to 1%
the oxides of lutetium:
Lantana	from 5·10% to 1%
cerium	from 1·10% 1%
praseodymium	2·10% to 1%
neodymium	from 5·10% to 1%
Samaria	2·10% to 1%
europium	from 5·10% to 1%
gadolinium	2·10% to 1%
terbium	from 5·10% to 1%
dysprosium	2·10% to 1%
holmium	2·10% to 1%
erbium	from 1·10% 1%
thulium	2·10% to 1%
ytterbium	from 1·10% 1%
yttrium	from 1·10% 1%
the oxides of yttrium:
Lantana	from 5·10% to 1%
cerium	from 1·10% 1%
praseodymium	from 1·10% 1%
neodymium	from 5·10% to 1%
Samaria	from 5·10% to 1%
europium	from 1·10% 1%
gadolinium	2·10% to 1%
terbium	from 5·10% to 1%
dysprosium	2·10% to 1%
holmium	2·10% to 1%
erbium	from 1·10% 1%
thulium	from 1·10% 1%
ytterbium	from 1·10% 1%
Lutetia	from 1·10% 1%

(Changed edition, Rev. N 2).

1. GENERAL REQUIREMENTS

1.1. General requirements for method of analysis according to GOST 23862.0−79.

2. APPARATUS, MATERIALS AND REAGENTS

The diffraction type spectrograph DFS-13 with a grating 1200 lines/mm operating in the first order reflection, from being a lighting system.

The arc generator type DG-2 with optional rheostat or similar, adapted to ignite the DC arc high frequency discharge.

Rectifier 250−300, 30−50 A.

Microphotometer geregistreerde type MF-2 or similar.

Spectromancer of PS-18 or similar.

Analytical scale.

Libra torsion type VT-500 or similar.

The mortar and pestle of agate or Jasper.

Muffle furnace with thermostat, providing a temperature of 1000 °C.

The machine tool for sharpening of electrodes.

Coals spectral high purity-7−3, with a diameter of 6 mm.

The electrodes are machined from high purity coals spectral-7−3, 6 mm in diameter, sharpened to a truncated cone with an apex angle of 15 degrees and with a platform with a diameter of 1.5 mm.

The electrodes are machined from high purity coals spectral-7−3, 6 mm in diameter, with a crater depth of 5 mm, a diameter of 2 mm and a wall thickness of 1 mm.

Graphite powder of high purity according to GOST 23463−79.

Tracing paper according to GOST 892−89.

Medical compress according to NTD or hygroscopic GOST 5556−81.

Crucibles porcelain.

Spectrographic plates type I, size 9х24 or equivalent, providing normal blackening of analytical lines in the spectrum.

Rectified ethyl alcohol GOST 18300−87.

Oxides of rare earth elements: lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, yttrium, clean-defined impurities.

(Changed edition, Rev. N 1).

3. PREPARATION FOR ASSAY

3.1. Sample preparation comparison

References (OS) is prepared before shooting spectra of the samples on mixing graphite powder (UCP) oxide REE, clean at the designated impurities in a 1:1 ratio. For making the OS use the oxide of re, corresponding to the analyzed basis, svezheproseyannuyu.

3.2. Samples on graphite powder (UCP) is prepared by mixing powder of graphite with oxides of rare earth elements (REE). Consistently prepare two series of the UCP. One series — light LOGP contains additives of oxides of lanthanum, cerium, praseodymium, neodymium, samarium and europium (light REE).

Other series — heavy TOP contains additives of oxides of gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yttrium (heavy REE).

To prepare LOGP 1, containing 1% (by weight of oxides) REE, in a Jasper mortar place of 1.88 g of graphite powder, 20 mg svezhepoymannyh oxides of lanthanum, cerium, praseodymium, neodymium, samarium and europium.

When chemical-spectral analysis of terbium oxide (GOST 23862.7−79, GOST 23862.9−79) for the preparation of LOGP 1 in agate mortar place of 1.86 g of graphite powder, 20 mg svezhepoymannyh oxides of lanthanum, cerium, praseodymium, neodymium, samarium, europium and gadolinium. The content was stirred for 30 min, adding alcohol until mushy state mass. After mixing the alcohol burn and the mixture stirred for 3 min.

To prepare TOP 1, containing 1% (by weight of oxides) of heavy REE, in a Jasper mortar place of 1.82 g of graphite powder and 20 mg svezhepoymannyh oxides of gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yttrium. Repeat the procedure of mixing and burning the alcohol as described for sample 1 LOGP.

Samples LOGP 2-LOGP 8 containing light REE and samples TOP 2-TOP 10 containing heavy REE, prepare a serial dilution, respectively LOGP TOHP 1 and 1 and then each subsequent sample graphite powder, repeating each time the mixing procedure and burning alcohol, as described in the preparation of sample 1 LOGP.

The content of each of the designated impurities in the samples LOGP 1-LOGP 8 and TOP 1-TOP 10 and added to the mixture of graphite powder sample and the previous sample are shown in table.1.

Table 1


		The mass of charge, g
Marking sample	The mass fraction of each of the designated impurities in the calculation of the mass fraction of oxides in the mixture of oxides and powdered graphite, %	Powder graphite	The previous sample (in parentheses symbol)
LOGP 1	1,0	-	-
LOGP 2	5·10	0,900	0,900 (LOGP 1)
LOGP 3	2·10	1,155	0,770 (LOGP 2)
LOGP 4	1·10	0,925	0,925 (LOGP 3)
LOGP 5	5·10	0,850	0,850 (LOGP 4)
LOGP 6	2·10	1,050	0,700 (LOGP 5)
LOGP 7	1·10	0.750 in	0.750 in (LOGP 6)
LOGP 8	5·10	0,500	0,500 (LOGP 7)
TOP 1	1,0	-	-
TOP 2	5·10	0,885	0,885 (TOHP 1)
TOP 3	2·10	1,155	0,770 (TOHP 2)
TOP 4	1·10	0,940	0,940 (TOP 3)
TOP 5	5·10	0,880	0,880 (TOP 4)
TOP 6	2·10	1,140	0,760 (TOP 5)
TOP 7	1·10	0,900	0,900 (TOP 6)
TOP 8	5·10	0,800	0,800 (TOP 7)
TOP 9	2·10	0,900	0,600 (TOP 8)
TOP 10	1·10	0,500	0,500 (TOP 9)

Samples stored in the bags of tracing paper in a desiccator.

4. ANALYSIS

4.1. Analysis are oxides of REE. Metals transferred to the oxide according to GOST 23862.0−79.

4.2. A portion of the sample weighing 30 mg was mixed with a spatula on tracing paper for 1−2 min with 30 mg of graphite powder. The resulting mixture was divided into four equal parts and placed with a spatula and a metal rod in the craters of the four electrodes.

15 mg each of the samples LOGP 1-LOGP 8 or TOGP 1−10 TOP mixed with 15 mg oxide pure REE-defined impurities. To prepare the mixture using oxide REE corresponding to the analyzed basis. The resulting mixture divided into two equal parts and placed in the craters of the two electrodes.

The electrode with the sample or the OS is an anode, the upper electrode, sharpened to a truncated cone cathode. Between electrodes to ignite an arc DC current of 10 A. the exposure Time from 60 to 120 sec (until complete evaporation of the material).

The spectra are photographed on a spectrograph DFS-13. The width of the slit of a spectrograph 15 microns. In the cassette of the charge spectrograph of the plate type I.

The spectra of each test sample and each asset is photographed on the photographic plate twice. Each sample is photographed in two spectral regions on two photographic plates. In the 390−425 nm region with an OS that contains light REE (LOGP 1-LOGP 8), and in the region 310−340 nm with comparison samples containing heavy REE (TOHP 1-TOP 10).

Exposed photographic plates showing for 3 min, rinsed with water, fixed, washed in running water for 15 min and dried.

4.2.1. Determination of europium in samarium oxide in the range of detectable concentrations from 1·10 ГОСТ 23862.1-79 Редкоземельные металлы и их окиси. Спектральный метод определения примесей окисей редкоземельных элементов (с Изменениями N 1, 2) % to 5·10% spend according to claim 4.2. The spectra photographed in the region of 440−460 nm with samples comparison (LOGP 1-LOGP 8).

(Added, Rev. N 1).

5. PROCESSING OF THE RESULTS

5.1. In each spectrogram photometric blackening of analytical lines of the designated element ГОСТ 23862.1-79 Редкоземельные металлы и их окиси. Спектральный метод определения примесей окисей редкоземельных элементов (с Изменениями N 1, 2) and the line of comparison (tab.2) (as lines of comparison use lines of rare earth base) and calculate the difference of pochernenija ГОСТ 23862.1-79 Редкоземельные металлы и их окиси. Спектральный метод определения примесей окисей редкоземельных элементов (с Изменениями N 1, 2) . Two parallel values and obtained two spectrograms taken for each sample, find the arithmetic mean ГОСТ 23862.1-79 Редкоземельные металлы и их окиси. Спектральный метод определения примесей окисей редкоземельных элементов (с Изменениями N 1, 2) . Values and comparison of samples for build calibration curve in the coordinates ( ГОСТ 23862.1-79 Редкоземельные металлы и их окиси. Спектральный метод определения примесей окисей редкоземельных элементов (с Изменениями N 1, 2) ).

Mass fraction of impurities determined in the sample find the schedule for the calibration value ГОСТ 23862.1-79 Редкоземельные металлы и их окиси. Спектральный метод определения примесей окисей редкоземельных элементов (с Изменениями N 1, 2) .

Discrepancies in the results of the two tests (ratio greater outcome to a lesser) should not exceed the value of permissible differences, is equal to 1.5.

Table 2


Basis	The designated element	Wavelength of analytical lines, nm	Wavelength comparison lines (lines of the element-base), nm	The interval defined by the mass fraction of oxides of REE, %
Oxide of lanthanum	Cerium	422,26	422,31	1·10-1·10
		422,26	422,93	2·10a 1.0
			421,70
	Praseodymium	422,29	422,31	1·10-1·10
		422,29	422,93	3·10a 1.0
	Neodymium	425,24	425,57	2·10-2·10
		425,24	424,83	1·10and 1.0
	Samarium	426,51	424,83	5·10and 1.0
		432,90	432,74	1·10-1·10
	Europium	390,71	390,80	1·10-1·10
		390,71	391,08	5·10and 1.0
	Gadolinium	335,86	335,21	5·10-5·10
		335,86	335,75	3·10a 1.0
	Terbium	319,96	319,38	2·10-2·10
		319,96	320,45	1·10and 1.0
	Dysprosium	315,65	315,64	5·10-5·10
		315,65	315,76	3·10a 1.0
	Holmium	339,89	340,05	1·10-2·10
		316,62	316,90	1·10and 1.0
	Erbium	323,06	322,47	5·10-5·10
		323,06	323,57	3·10a 1.0
	Tullius	313,39	313,41	5·10-5·10
		313,39	313,63	3·10a 1.0
	Ytterbium	328,94	329,35	1·10-1·10
		328,94	328,39	5·10-1·10
		328,75	328,71	5·10and 1.0
	Lutetium	331,21	331,09	2·10-2·10
		331,21	331,06	1·10-1·10
		319,81	320,45	5·10and 1.0
	Yttrium	320,03	319,38	5·10-2·10
		320,03	320,45	1·10-1·10
		320,03	320,58	5·10and 1.0
Dioxide cerium	Lantan	398,85	398,89	2·10-2·10
		398,85	398,71	3·10-2·10
		398,85	398,61	1·10and 1.0
	Praseodymium	422,53	422,54	5·10-5·10
		422,53	422,57	1·10and 1.0
	Neodymium	397,33	397,27	5·10-5·10
		397,33	397,60	1·10and 1.0
	Samarium	392,24	392,67	5·10-5·10
		392,24	392,08	1·10and 1.0
	Europium	393,05	393,23	2·10a 1.0
		393,05	393,55	2·10a 1.0
	Gadolinium	335,05	335,04	2·10-2·10
		335,05	335,18	5·10and 1.0
	Terbium	332,44	332,40	5·10and 1.0
	Dysprosium	340,78	340,80	1·10-5·10
		340,78	340,88	3·10a 1.0
	Holmium	345,60	345,78	5·10-5·10
		345,60	345,55	1·10-2·10
		345,60	345,63	5·10and 1.0
	Erbium	326,48	326,52	5·10-5·10
		326,48	326,21	2·10a 1.0
	Tullius	329,10	328,39	5·10-5·10
		325,80	325,83	1·10-1·10
		325,80	325,78	5·10and 1.0
	Ytterbium	328,94	328,95	2·10-2·10
		328,94	328,83	1·10and 1.0
	Lutetium	335,96	336,10	1·10-5·10
		335,96	335,94	3·10a 1.0
	Yttrium	320,03	320,02	2·10-5·10
		320,03	326,09	3·10a 1.0
Oxide praseodymium	Lantan	404,29	404,31	2·10-2·10
		404,29	404,19	5·10and 1.0
	Cerium	394,28	394,17	1·10and 1.0
	Neodymium	402,18	402,05	1·10and 1.0
	Samarium	406,46	406,47	1·10and 1.0
	Europium	390,71	390,72	5·10and 1.0
	Gadolinium	310,05	310,06	1·10-1·10
		310,05	310,03	5·10and 1.0
	Terbium	332,44	332,45	1·10and 1.0
	Dysprosium	339,36	339,37	2·10-2·10
		339,36	339,41	5·10and 1.0
	Holmium	339,90	339,89	5·10and 1.0
	Erbium	326,48	326,43	2·10-2·10
		326,48	326,33	5·10and 1.0
	Tullius	336,26	336,18	2·10-2·10
		336,26	336,31	5·10and 1.0
	Ytterbium	328,94	328,86	1·10-5·10
		328,94	329,55	3·10a 1.0
	Lutetium	331,21	331,15	5·10-5·10
		328,17	328,26	2·10-2·10
		328,17	328,07	5·10and 1.0
	Yttrium	320,33	320,28	5·10-5·10
		320,33	319,91	5·10and 1.0
The oxide of neodymium	Lantan	433,37	433,35	2·10-2·10
		433,37	433,32	1·10and 1.0
		442,99	442,65	5·10and 1.0
	Cerium	422,26	422,24	5·10and 1.0
		438,22	442,65	5·10and 1.0
	Praseodymium	422,53	422,70	5·10-5·10
		422,53	422,51	1·10and 1.0
		440,88	442,65	5·10and 1.0
	Samarium	433,42	433,48	1·10and 1.0
		443,39	442,65	5·10and 1.0
	Europium	397,20	397,24	1·10and 1.0
	Gadolinium	310,05	310,08	1·10-1·10
		310,05	309,99	3·10-2·10
		310,05	309,95	1·10and 1.0
	Terbium	332,44	332,49	5·10and 1.0
	Dysprosium	340,78	340,74	1·10-5·10
		340,78	340,84	3·10a 1.0
	Holmium	347,42	347,34	5·10and 1.0
	Erbium	323,06	323,15	1·10-1·10
		323,06	322,99	2·10-2·10
		323,06	323,17	1·10and 1.0
	Tullius	346,22	346,26	2·10-2·10
		324,15	324,34	5·10-5·10
		324,15	324,20	3·10-2·10
		324,15	323,98	1·10and 1.0
	Ytterbium	328,94	328,99	5·10-5·10
		328,94	329,38	2·10a 1.0
	Lutetium	331,21	331,18	5·10-5·10
		331,21	331,12	1·10-1·10
		331,21	331,10	3·10a 1.0
	Yttrium	319,56	319,57	5·10-5·10
		319,56	319,50	1·10-1·10
		319,56	319,46	5·10and 1.0
The oxide of samarium	Lantan	433,37	433,34	1·10-1·10
		423,84	423,86	3·10a 1.0
	Cerium	424,87	424,90	1·10and 1.0
	Praseodymium	422,29	421,95	1·10and 1.0
	Neodymium	430,36	430,40	1·10-1·10
		430,36	430,13	5·10and 1.0
	Europium	393,05	392,29	5·10and 1.0
		462,72	462,41	1·10-5·10
	Gadolinium	335,05	335,07	1·10-1·10
		335,05	334,98	3·10a 1.0
	Terbium	332,44	332,42	5·10and 1.0
	Dysprosium	339,36	339,41	2·10-2·10
		339,36	339,34	1·10and 1.0
	Holmium	339,90	339,82	2·10-2·10
		339,90	339,74	5·10and 1.0
	Erbium	326,48	316,46	5·10-5·10
		326,48	326,37	3·10-5·10
		326,48	326,49	1·10and 1.0
	Tullius	336,26	336,24	2·10-5·10
		336,26	336,27	2·10-2·10
		336,26	336,14	5·10and 1.0
	Ytterbium	328,94	328,89	1·10-1·10
		328,94	328,90	3·10-5·10
		328,94	328,62	2·10-2·10
	Lutetium	331,21	331,48	5·10and 1.0
	Yttrium	319,56	319,51	2·10-2·10
		319,56	319,57	1·10-2·10
		319,56	319,62	1·10and 1.0
Oxide europium	Lantan	433,37	433,24	5·10-5·10
		433,37	433,12	3·10a 1.0
	Cerium	428,99	429,39	1·10and 1.0
	Praseodymium	422,29	422,23	1·10and 1.0
	Neodymium	401,23	Of 401.12	1·10-1·10
		401,23	401,04	5·10and 1.0
	Samarium	425,64	425,59	5·10-5·10
		425,64	425,85	1·10and 1.0
	Gadolinium	335,86	335,69	1·10-1·10
		335,86	335,71	5·10and 1.0
	Terbium	332,44	332,37	5·10and 1.0
	Dysprosium	339,36	339,24	1·10-1·10
		339,36	339,38	5·10and 1.0
	Holmium	339,90	339,80	1·10-1·10
		339,90	339,66	5·10and 1.0
	Erbium	326,48	326,09	2·10-2·10
		326,48	327,43	5·10and 1.0
	Tullius	336,26	336,20	5·10-5·10
		336,26	336,76	2·10a 1.0
	Ytterbium	328,97	328,59	1·10-5·10
		328,97	328,78	2·10a 1.0
	Lutetium	337,65	337,37	1·10-2·10
		337,65	338,17	1·10and 1.0
	Yttrium	321,67	321,74	5·10-5·10
		321,67	322,19	2·10-2·10
		321,67	321,38	1·10and 1.0
The oxide of gadolinium	Lantan	394,91	394,70	2·10-2·10
		394,91	395,34	1·10and 1.0
	Cerium	424,87	425,03	1·10and 1.0
	Praseodymium	422,29	422,30	1·10and 1.0
	Neodymium	430,36	430,73	2·10-2·10
		430,36	430,35	1·10and 1.0
	Samarium	425,64	425,41	2·10-2·10
		425,64	425,54	1·10and 1.0
	Europium	393,05	393,30	1·10and 1.0
	Terbium	322,44	332,48	1·10-1·10
		332,44	332,14	5·10and 1.0
		329,31	328,90	1·10and 1.0
	Dysprosium	340,78	341,04	2·10-2·10
		340,78	341,10	1·10and 1.0
	Holmium	339,90	339,92	2·10-2·10
		339,90	340,11	1·10and 1.0
	Erbium	323,06	323,07	5·10-5·10
		323,06	322,92	1·10-2·10
		323,06	323,60	1·10and 1.0
	Tullius	342,51	342,78	2·10-2·10
		336,26	336,32	5·10-5·10
		336,26	336,29	2·10a 1.0
	Ytterbium	328,94	328,95	1·10-2·10
		328,94	328,90	1·10-1·10
		328,94	329,22	5·10and 1.0
	Lutetium	335,96	335,32	1·10-1·10
		325,43	325,36	2·10-2·10
		325,96	335,66	1·10and 1.0
	Yttrium	321,67	321,92	2·10-2·10
		321,67	322,42	1·10-2·10
		321,67	322,54	1·10and 1.0
Oxide terbium	Lantan	398,83	398,89	1·10-1·10
		398,83	398,82	2·10-2·10
		398,83	398,95	5·10and 1.0
	Cerium	394,28	394,32	2·10-2·10
		394,28	394,29	1·10and 1.0
	Praseodymium	422,53	422,54	2·10-2·10
		422,53	422,49	5·10and 1.0
	Neodymium	395,22	395,23	5·10and 1.0
	Samarium	428,08	428,18	5·10-5·10
		428,08	428,19	1·10and 1.0
	Europium	390,71	390,73	2·10-2·10
		390,71	390,65	1·10and 1.0
	Gadolinium	310,05	310,02	1·10-2·10
		310,05	310,01	1·10and 1.0
	Dysprosium	338,89	338,90	1·10and 1.0
		347,71	347,69	5·10-5·10
		347,71	347,67	2·10a 1.0
	Holmium	347,43	347,08	1·10-5·10
		347,43	347,35	2·10-2·10
		347,43	347,13	1·10and 1.0
	Erbium	326,48	326,47	5·10and 1.0
	Tullius	342,51	342,52	1·10-1·10
		325,80	325,88	2·10-2·10
		325,80	325,81	1·10and 1.0
	Ytterbium	328,94	328,97	5·10-5·10
		328,94	328,96	1·10-2·10
		328,94	328,38	1·10and 1.0
	Lutetium	325,43	325,49	1·10and 1.0
	Yttrium	324,23	324,22	5·10-5·10
		324,23	324,14	1·10-2·10
		324,23	324,32	1·10and 1.0
Oxide of dysprosium	Lantan	394,99	394,84	1·10-2·10
		394,99	394,69	2·10a 1.0
	Cerium	394,28	394,33	5·10and 1.0
	Praseodymium	422,29	422,33	5·10and 1.0
	Neodymium	397,68	397,67	2·10-2·10
		397,68	397,69	1·10and 1.0
	Samarium	428,08	428,09	2·10-2·10
		428,08	428,15	1·10and 1.0
	Europium	390,71	390,74	5·10and 1.0
	Gadolinium	335,05	335,09	5·10-5·10
		335,05	335,03	2·10a 1.0
	Terbium	332,44	332,53	5·10and 1.0
	Holmium	345,60	345,77	1·10-2·10
		345,60	345,66	1·10and 1.0
	Erbium	323,06	323,03	2·10a 1.0
	Tullius	315,10	315,07	5·10and 1.0
	Ytterbium	347,88	347,91	1·10and 1.0
	Lutetium	325,43	325,34	5·10and 1.0
	Yttrium	319,56	319,57	5·10-5·10
		319,56	319,76	2·10a 1.0
Holmium oxide	Lantan	433,37	433,53	1·10-2·10
		432,30	431,83	5·10and 1.0
	Cerium	422,23	422,22	2·10-2·10
		422,23	422,17	1·10and 1.0
	Praseodymium	422,29	422,17	5·10and 1.0
	Neodymium	430,36	430,35	1·10-1·10
		430,36	430,41	5·10-5·10
		430,36	430,16	1·10and 1.0
	Samarium	425,64	425,61	2·10-2·10
		425,64	425,60	1·10and 1.0
	Europium	390,71	390,72	2·10-2·10
		390,71	390,96	5·10and 1.0
	Gadolinium	335,86	Of 336.00	5·10and 1.0
	Terbium	329,31	329,24	2·10a 1.0
	Dysprosium	330,89	330,65	5·10and 1.0
	Erbium	344,11	344,18	5·10and 1.0
	Tullius	336,26	336,16	2·10-2·10
		336,26	336,29	1·10and 1.0
	Ytterbium	328,94	328,98	1·10-1·10
		328,94	328,90	5·10-5·10
		328,94	328,78	2·10-2·10
	Lutetium	328,94	328,85	1·10and 1.0
		337,65	337,66	1·10-1·10
	Yttrium	331,21	331,30	2·10-2·10
		331,21	331,25	1·10and 1.0
		319,56	319,86	1·10-1·10
		319,56	319,57	5·10and 1.0
The oxide of erbium	Lantan	433,37	433,34	5·10-5·10
		423,84	423,97	2·10-2·10
		423,84	423,48	1·10and 1.0
	Cerium	422,26	422,64	5·10-5·10
		422,26	422,43	1·10and 1.0
	Praseodymium	422,29	422,64	2·10-2·10
		422,29	422,43	5·10and 1.0
	Neodymium	430,36	430,35	1·10-1·10
		430,36	430,54	5·10-5·10
		430,36	430,38	1·10and 1.0
	Samarium	425,64	425,80	5·10-5·10
		425,64	425,57	1·10and 1.0
	Europium	397,20	397,04	2·10-2·10
		397,20	Of 397.00	1·10and 1.0
	Gadolinium	336,22	336,21	2·10-2·10
		336,22	336,27	1·10-2·10
		336,22	336,15	1·10and 1.0
	Terbium	332,44	332,46	1·10and 1.0
	Dysprosium	346,10	Of 346.00	2·10-1·10
		346,10	345,78	5·10and 1.0
	Holmium	345,60	345,78	5·10-1·10
		345,60	345,93	5·10and 1.0
	Tullius	330,98	330,97	2·10-2·10
		330,98	330,94	1·10and 1.0
		347,88	347,86	1·10and 1.0
	Ytterbium	335,96	335,98	2·10-2·10
	Lutetium	335,96	336,04	5·10-2·10
		319,81	319,80	1·10and 1.0
	Yttrium	320,03	Of 320.11	1·10-2·10
		320,03	319,96	1·10-2·10
		320,03	320,19	1·10and 1.0
Oxide of thulium	Lantan	433,37	433,06	2·10-2·10
		433,37	433,47	1·10-2·10
		402,59	402,75	1·10and 1.0
	Cerium	424,87	424,92	2·10-2·10
		424,87	424,95	1·10and 1.0
	Praseodymium	422,53	422,43	1·10-1·10
		422,53	422,35	5·10-5·10
		422,53	422,60	1·10and 1.0
	Neodymium	430,36	430,35	1·10-1·10
		430,36	430,24	5·10-5·10
		397,95	398,04	1·10and 1.0
	Samarium	422,97	422,79	2·10-2·10
		422,97	423,04	1·10and 1.0
	Europium	393,05	393,06	5·10-5·10
		393,05	392,87	1·10and 1.0
	Gadolinium	335,05	335,12	2·10-2·10
		335,05	334,96	1·10-2·10
		335,05	335,10	1·10and 1.0
	Terbium	329,31	329,29	1·10-2·10
		329,31	329,37	1·10and 1.0
	Dysprosium	339,36	339,38	2·10a 1.0
	Holmium	339,90	339,93	1·10-2·10
		339,90	340,04	1·10and 1.0
	Erbium	323,06	323,07	1·10-2·10
		323,06	322,85	1·10and 1.0
	Ytterbium	313,26	313,27	5·10-5·10
		313,26	313,41	1·10and 1.0
	Lutetium	325,43	325,30	1·10-2·10
		325,43	324,98	1·10and 1.0
	Yttrium	320,33	320,32	5·10-1·10
		320,33	320,41	5·10and 1.0
Oxide of ytterbium	Lantan	433,37	433,04	5·10-5·10
		433,37	433,54	1·10-2·10
		423,84	424,17	1·10and 1.0
	Cerium	422,26	422,41	2·10-2·10
		422,26	423,35	1·10and 1.0
	Praseodymium	422,29	422,87	2·10-2·10
		422,29	423,35	1·10and 1.0
	Neodymium	430,36	431,30	5·10-1·10
		430,36	430,10	5·10and 1.0
	Samarium	428,08	427,25	1·10-1·10
		428,08	427,34	5·10-5·10
		428,08	427,21	1·10and 1.0
	Europium	397,20	397,25	1·10-2·10
		397,20	397,48	1·10and 1.0
	Gadolinium	310,05	310,10	5·10-2·10
		310,05	310,07	1·10and 1.0
	Terbium	321,99	321,96	2·10-2·10
		321,99	321,14	1·10and 1.0
	Dysprosium	315,65	315,92	2·10-2·10
		315,65	315,58	1·10and 1.0
	Holmium	339,90	339,98	1·10-2·10
		339,90	339,87	2·10-2·10
		339,90	338,75	1·10and 1.0
	Erbium	323,06	322,84	2·10-2·10
		323,06	322,97	5·10and 1.0
	Tullius	313,13	313,31	1·10-2·10
		313,13	312,79	1·10-2·10
		313,13	313,68	1·10and 1.0
	Lutetium	331,21	331,38	2·10-5·10
		331,21	332,09	2·10a 1.0
	Yttrium	320,33	319,98	1·10-2·10
		320,33	320,53	5·10-5·10
		320,33	320,12	1·10and 1.0
Oxide of lutetium	Lantan	399,58	399,72	5·10-5·10
		433,37	433,07	2·10-2·10
		399,58	398,10	1·10and 1.0
	Cerium	422,26	422,15	1·10-2·10
		422,26	422,72	1·10and 1.0
	Praseodymium	422,53	422,87	2·10-2·10
		422,53	422,72	1·10and 1.0
	Neodymium	430,36	430,13	5·10-5·10
		430,36	429,85	2·10a 1.0
	Samarium	425,64	425,61	2·10-2·10
		425,64	426,20	1·10and 1.0
	Europium	390,71	390,77	5·10-2·10
		390,71	390,39	1·10and 1.0
	Gadolinium	335,05	334,90	2·10-2·10
		335,05	336,66	1·10and 1.0
	Terbium	332,44	332,58	5·10-5·10
		Of 322.00	323,07	2·10-2·10
		Of 322.00	322,26	1·10and 1.0
	Dysprosium	339,96	338,81	2·10-5·10
		339,96	338,28	2·10a 1.0
	Holmium	339,90	339,41	2·10-5·10
		339,90	341,28	2·10a 1.0
	Erbium	323,06	323,07	1·10-5·10
		323,06	322,26	2·10a 1.0
	Tullius	336,26	336,30	2·10-2·10
		336,26	336,66	1·10-2·10
		336,26	338,28	1·10and 1.0
	Ytterbium	328,94	328,97	1·10-1·10
		328,94	327,34	2·10-2·10
		328,94	329,39	1·10-2·10
		347,63	347,77	1·10and 1.0
	Yttrium	321,67	321,72	1·10-2·10
		321,67	322,26	1·10-2·10
		317,51	317,03	1·10and 1.0
Oxide of yttrium	Lantan	433,37	433,43	5·10-5·10
		433,37	431,96	1·10-1·10
		423,84	423,71	5·10and 1.0
	Cerium	422,26	422,20	1·10-1·10
		422,26	421,64	3·10a 1.0
	Praseodymium	422,53	422,20	1·10-1·10
		422,53	422,92	5·10and 1.0
	Neodymium	430,36	428,83	5·10-5·10
		430,44	428,83	2·10a 1.0
	Samarium	428,08	428,80	5·10-2·10
		428,08	428,82	1·10-5·10
		428,08	427,93	1·10and 1.0
	Europium	390,71	391,44	1·10-2·10
		390,71	391,83	1·10and 1.0
	Gadolinium	335,05	335,15	2·10-5·10
		335,05	335,71	2·10-2·10
		335,05	335,48	1·10and 1.0
	*	426,22	425,44	1·10-1·10
		426,22	426,46	5·10and 1.0
	Terbium	332,44	332,43	5·10-5·10
		332,44	333,36	2·10a 1.0
	Dysprosium	339,36	339,82	2·10-2·10
		340,78	340,99	1·10-2·10
		344,70	347,02	1·10and 1.0
	Holmium	339,90	339,82	2·10-2·10
		339,90	340,99	1·10-2·10
		342,16	340,99	1·10and 1.0
	Erbium	326,48	325,92	1·10-1·10
		323,06	321,71	5·10-5·10
		323,06	322,71	2·10-2·10
		338,96	338,90	1·10and 1.0
	Tullius	342,51	342,50	1·10-1·10
		342,51	342,63	5·10-2·10
		342,56	342,63	1·10and 1.0
	Ytterbium	328,94	328,45	1·10-1·10
		328,94	328,99	5·10-2·10
		319,29	318,07	1·10and 1.0
	Lutetium	328,17	328,45	1·10-1·10
		335,96	335,70	2·10-5·10
		338,55	338,90	2·10a 1.0

_______________

* Lines of gadolinium are used in chemical spectral analysis of terbium according to GOST 23862.9−79.

(Changed edition, Rev. N 1, 2).

5.2. Under the control of the reproducibility of parallel measurements on two parallel values ГОСТ 23862.1-79 Редкоземельные металлы и их окиси. Спектральный метод определения примесей окисей редкоземельных элементов (с Изменениями N 1, 2) and obtained two spectrograms taken for each of the analyzed samples, calibration schedule to find the value ГОСТ 23862.1-79 Редкоземельные металлы и их окиси. Спектральный метод определения примесей окисей редкоземельных элементов (с Изменениями N 1, 2) and the results of each of the parallel definitions of the impurities in the sample. The ratio of the larger to the smaller result should not exceed the value of permissible differences, is equal to 1.5.

(Changed edition, Rev. N 1).

ГОСТ 23862.1-79

GOST 23862.1−79 Rare-earth metals and their oxides. Spectral method of determination of impurities of oxides of rare earth elements (with Amendments No. 1, 2)

2. APPARATUS, MATERIALS AND REAGENTS

3. PREPARATION FOR ASSAY

4. ANALYSIS

5. PROCESSING OF THE RESULTS

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ГОСТ 23862.1-79

GOST 23862.1−79 Rare-earth metals and their oxides. Spectral method of determination of impurities of oxides of rare earth elements (with Amendments No. 1, 2)

2. APPARATUS, MATERIALS AND REAGENTS

3. PREPARATION FOR ASSAY

4. ANALYSIS

5. PROCESSING OF THE RESULTS

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