GOST 16274.3-77

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-162743-77.pdf (97.45 KiB)
ГОСТ 16274.3-77

GOST 16274.3−77 Bismuth. Method for the determination of copper content (with Amendments No. 1, 2, 3)

GOST 16274.3−77

Group B59

STATE STANDARD OF THE USSR

BISMUTH

Method for the determination of copper content

Bismuth.
Method for determination of copper content

AXTU 1709

Date of introduction 1978−01−01

INFORMATION DATA

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

DEVELOPERS

PS Poklonsky, F. M. Manji, G. V. Khabarova

2. APPROVED AND promulgated by the DECREE of the State Committee of standards of Ministerial Council of the USSR from 25.01.77 N 172

3. The frequency of inspection 5 years

4. REPLACE GOST 16274.3−70

5. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS


The designation of the reference document referenced	The partition number
GOST 859−78	Sec. 2
GOST 1770−74	Sec. 2
GOST 3652−69	Sec. 2
GOST 3760−79	Sec. 2
GOST 4461−77	Sec. 2
GOST 7851−74	Sec. 2
GOST 13647−78	Sec. 2
GOST 16274.0−77	Sec. 1

6. Resolution of the state standard from 30.07.92 N 836 removed the limitation of the validity period

7. REPRINT (July 1997) with Amendments No. 1, 2, 3, approved in January 1983, June 1987, July 1992 (IUS 5−83, 11−87, 10−92)

This standard applies to metallic bismuth brands Vi1 and Vi2 and sets the colorimetric method for the determination of copper content (when the copper content from 0.005 to 0.02%).

The method is based on colorimetrically pyridinediamine complex of copper extracted in the chloroform layer. Bismuth in the solution is bound in the complex with citric acid.

1. GENERAL REQUIREMENTS

General requirements for method of analysis according to GOST 16274.0

2. REAGENTS AND SOLUTIONS

The colorimetric glass cylinders.

Volumetric flasks with a capacity of 1000, 100 cm ГОСТ 16274.3-77 Висмут. Метод определения содержания меди (с Изменениями N 1, 2, 3) according to GOST 1770.

Pipettes with a capacity of 10 and 20 cmfor NTD.

Heat-resistant conical flask with a capacity of 50 cmaccording to GOST 7851.

Nitric acid according to GOST 4461, diluted 1:1.

Citric acid according to GOST 3652, 80% solution.

Ammonia water according to GOST 3760.

Pyridine according to GOST 13647.

Ammonium radamisty according to GOST 27067, 30% solution.

Copper of brand of M00 according to GOST 859*.
_______________
* On the territory of the Russian Federation GOST 859−2001. — Note the manufacturer’s database.

Standard solutions of copper.

Solution 1; prepared as follows: 1 g of copper is dissolved in 10 cm ГОСТ 16274.3-77 Висмут. Метод определения содержания меди (с Изменениями N 1, 2, 3) of nitric acid, diluted 1:1, boiled, transferred into a measuring flask with volume capacity of 1000 cm, made up to the mark with water.

1 cm ГОСТ 16274.3-77 Висмут. Метод определения содержания меди (с Изменениями N 1, 2, 3) of solution of 1 contains 1 mg of copper.

Solution 2; prepared as follows: 10 cmof the solution 1 is transferred to a volumetric flask with a capacity of 100 cm ГОСТ 16274.3-77 Висмут. Метод определения содержания меди (с Изменениями N 1, 2, 3) and top up with water to the mark.

1 cm ГОСТ 16274.3-77 Висмут. Метод определения содержания меди (с Изменениями N 1, 2, 3) 2 of solution contains 0.1 mg of copper.

Solution 3; prepared as follows: 20 cmsolution of 2 placed in a volumetric flask with a capacity of 100 cmand top up with water to the mark.

The solution for three days.

1 cm ГОСТ 16274.3-77 Висмут. Метод определения содержания меди (с Изменениями N 1, 2, 3) of the solution contains 0.02 mg of copper.

(Changed edition, Rev. N 1).

3. ANALYSIS

A portion of the bismuth of 1 g was placed in a flask with a capacity of 50 cm ГОСТ 16274.3-77 Висмут. Метод определения содержания меди (с Изменениями N 1, 2, 3) , add 5 cmdiluted 1:1 nitric acid and dissolve in low heat until the disappearance of nitrogen oxides. After dissolution, add 5 cmof 80% strength citric acid solution and neutralize the solution with ammonia on the indicator paper «the Congo» until the transition of color from blue to red, priliva it quickly and vigorously. After this solution was cooled, poured 1 cm ГОСТ 16274.3-77 Висмут. Метод определения содержания меди (с Изменениями N 1, 2, 3) of pyridine, 4 cmof a solution of ammonium thiocyanate and mix, then pour 4 cmof chloroform, mix again for 2−3 minutes and transfer the solution into the cylinder to colorimetrically.

In another cylinder are transferred solutions from the flask to which was added all reagents and solutions, in addition to bismuth, and add from a burette a standard solution of 3 to equalize colors of the layers of chloroform in both cylinders.

4. PROCESSING OF THE RESULTS

4.1. The content of copper ( ГОСТ 16274.3-77 Висмут. Метод определения содержания меди (с Изменениями N 1, 2, 3) ) in percent is calculated by the formula

ГОСТ 16274.3-77 Висмут. Метод определения содержания меди (с Изменениями N 1, 2, 3) ,

where ГОСТ 16274.3-77 Висмут. Метод определения содержания меди (с Изменениями N 1, 2, 3) the amount of copper in the model 3 solution consumed for titration, mg;

— hitch, g;

1000 — conversion factor for grams to milligrams.

4.2. The maximum discrepancy between the results of three parallel measurements ( ГОСТ 16274.3-77 Висмут. Метод определения содержания меди (с Изменениями N 1, 2, 3) ) and the results of two tests () at a confidence probability of 0.95, should not exceed the values given in the table.


Mass fraction of copper, %	The discrepancy between the results of three parallel definitions %	The discrepancy between the results of two tests, %
0,005	0,002	0,003
0,010	0,004	0,005
0,020	0,006	0,008

Permitted discrepancies for the intermediate mass fraction calculated using linear interpolation or according to the formulas:

ГОСТ 16274.3-77 Висмут. Метод определения содержания меди (с Изменениями N 1, 2, 3) for the range of mass fraction from 0.005 to 0.01%;

for a mass fraction in excess of 0.01%,

where is the arithmetic mean of results of three parallel measurements;

ГОСТ 16274.3-77 Висмут. Метод определения содержания меди (с Изменениями N 1, 2, 3) — the arithmetic mean of the results of the two tests.

(Changed edition, Rev. N 3).