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GOST 14338.2-82

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 14338.2−82 Molybdenum. Method for the determination of sulphur (Change No. 1)


GOST 14338.2−82

Group B59


STATE STANDARD OF THE USSR

MOLYBDENUM

Method for the determination of sulfur

Molybdenum. Method for determination of sulphur


AXTU 1709

Valid from 01.01.84
before 01.01.92*
_______________________________
* Expiration removed
by the decree of Gosstandart of the USSR
from 27.09.91 N 1524 (IUS No. 12, 1991). -
Note the manufacturer’s database.



INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of nonferrous metallurgy of the USSR

PERFORMERS

V. I. Veprintsev, S. N. Suvorova, Y. A. Abramov, L. V. Mikhailov, V. V., Sultanian

2. APPROVED AND put INTO EFFECT by Decision of the USSR State Committee for standards from 30.09.82 N 3870

3. REPLACE GOST 14338.2−74

4. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

   
The designation of the reference document referenced
 The number of the paragraph, subparagraph
GOST 3118−77 Sec. 2
GOST 4159−79 Sec. 2
GOST 4232−74 Sec. 2
GOST 5583−78 Sec. 2
GOST 9147−80 Sec. 2
GOST 10163−76 Sec. 2
GOST 10262−73 Sec. 2
GOST 14338.0−82 1.1
GOST 14338.1−82 Sec. 2
GOST 18300−87 Sec. 2
GOST 20292−74 Sec. 2
GOST 25336−82 Sec. 2

5. Validity extended till 01.01.92 by the Resolution of Gosstandart of the USSR from 21.04.88 N 1106

6. REPRINT (August 1988) with amendment No. 1, approved in April 1988 (I & C 7−88)


This standard specifies politicalticker method for the determination of sulfur (with sulfur mass fraction of from 0.0005 to 0.05%) in the metal molybdenum, molybdenum anhydride and ammonium molybdate.

The method is based on the combustion of weighed portion of the sample in flowing oxygen at 1200−1350 °C. the Sulfur in the sample is combusted to sulfur dioxide which is then in the absorption vessel is absorbed in water to form sulphurous acid, which octarepeat solution of iodine in potassium iodide in the presence of an indicator-starch.

1. GENERAL REQUIREMENTS

1.1. General requirements for method of analysis according to GOST 14338.0−82.

2. APPARATUS, REAGENTS AND SOLUTIONS


Setup for the determination of sulfur (hell.1) consists of a tank 1 with oxygen according to GOST 5583−78 with gear; flowmeter 2 type RS-3A or RM-A; bottle 3filled with a granular manganese dioxide; bottle 4filled with Astarita; startup shutter 5; dogtramadol furnace 6 with sheltowee heaters, or any other furnace that provides heating to a temperature (1300±50) °C; capillary throttle 7; dust filter 8 and the analyzer 9, consisting of device type LMF-69 or other type with similar characteristics and the block of automatic titration BAHT or 15 BAHT-12ЛМ glass barbitalom (damn.2) and burette with an automatic valve or automatic burettes B-701.

ГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1)

Damn.1

ГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1)

Damn.2

The analyzer is placed in the absorption vessel according to GOST 25336−82, with a capacity of 150 cmГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1)with a magnetic clasp.

Allowed to use any analyzer, to ensure accuracy not lower than specified in the standard.

Pumps porcelain LS-2 according to GOST 9147−80.

Refractory mullite tube with an inner diameter of 20−21 mm.

Microburette according to GOST 20292−74* with a capacity of 2−5 cmГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1).
________________
* On the territory of the Russian Federation there are 29169−91 GOST, GOST 29227−91−29229−91 GOST, GOST 29251−91-GOST 29253−91. Here and further. — Note the manufacturer’s database.

Askari.

Bottles for washing gases according to GOST 25336−82.

Granulated manganese dioxide, prepared according to GOST 14338.1−82.

Potassium iodide according to GOST 4232−74.

Hydrochloric acid by the GOST 3118−77.

Zinc oxide according to GOST 10262−73.

Rectified ethyl alcohol GOST 18300−87.

The soluble starch according to GOST 10163−76, a 0.05% aqueous solution: 0,500 g of starch are dissolved in 50 cmГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1)of water is poured into 500 cmГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1)of hot water, boil, bring the volume of solution with water to 1000 cmГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1)and add 5 cmГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1)of hydrochloric acid.

Iodine GOST 4159−79, solution: the linkage of iodine with a mass of 0.6 g was placed in a volumetric flask with a capacity of 1000 cmГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1), which had previously placed 4 g of potassium iodide, dissolve, add water to volume of 1000 cmГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1)and mixed. The solution was stored in a flask made of dark glass. The titer of the iodine solution sets for the standard sample and verify after burning nine or twelve batches.

Standard samples of categories of GEO, CCA, SOP, which certified the content of a component is not different from that analyzed more than two times.

(Changed edition, Rev. N 1).

3. PREPARATION FOR ASSAY

3.1. Porcelain boats and the zinc oxide is calcined in flowing oxygen at 1280 °C for 3 min.

In the absorption vessel pour 120 cmГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1)absorption solution, place the vessel in the slot of the analyzer, is lowered into the vessel, the rod of the stirrer and adjust the stirring speed of the solution.

Set the oxygen flow rate is 1000 cmГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1)/min.

The output of the LMF-69 is connected to the input Bat. On the way out of Bath connect the burette analyzer B-701 or magnetic valve, which is equipped with a BATH.

Only apply a silicone, fluoropolymer and polyethylene tubing with an inner diameter of 2 mm. the portion of the tube, the magnetic pinch valve, replace the rubber nipple with a tube length of 15 mm.

Bring the color of the absorption vessel to blue (wavelength 440−460 nm). After that, burn two or three sample standard sample containing sulfur.

Samples of molybdenum metal to remove any dirt washed in 5−10 cmГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1)of alcohol.

The ammonium molybdate is calcined in a muffle furnace at 400−450 °C to complete oxidation.

4. ANALYSIS

4.1. Depending on the mass fraction of sulfur in the sample take the sample in accordance with table.1.

Table 1

   
Mass fraction of sulfur, %
 The mass of charge, g
From 0.0005 to 0.001 Of 2.00
SV. Of 0.001 «to 0.01 Of 1.00
«To 0.01» to 0.05 0,50



Put the hitch svezheproseyannuyu a porcelain boat. Mixed with the calcined zinc oxide in the ratio 1:2. A boat placed in a tube for combustion and automatic titration unit (BAHT) include a handle (button) «titration». After the device turns off automatically and calculate the volume of iodine consumed for titration. Then produce the following combustion of the sample.

At the end of the analysis, the burette and absorption vessel is rinsed with water.

5. PROCESSING OF THE RESULTS

5.1. Mass fraction of sulfur (ГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1)) in percent is calculated by the formula

ГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1),


where ГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1)is the volume of iodine solution used for titration of the test solution, cmГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1);

ГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1) — the volume of iodine solution consumed for titration of the solution in the reference experiment, cmГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1);

ГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1) — the titer of the iodine solution, expressed in g/cmГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1)sulfur;

ГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1) — weight of charge, g

.

5.2. Allowable absolute discrepancies in the results of parallel measurements at a confidence probability ГОСТ 14338.2-82 Молибден. Метод определения серы (с Изменением N 1)of 0.95 does not exceed the values given in table.2.

Table 2

   
Mass fraction of sulfur, % Allowable absolute differences, %
From 0.0005 to 0.001 0,0002
SV. Of 0.001 «to 0.003 to 0,0004
«Of 0.003» to 0.01 0,001
«Is 0.01» to 0.03 0,002
«To 0.03» to 0.05 0,004