GB/T 5121.7-2008Methods for chemical analysis of copper and copper alloys -- Part 7: Determination of arsenic content (English PDF)

Foreword

GB/T 5121 "Copper and copper alloy chemical analysis method" a total of 27 sections.

--- Part 1. Determination of copper content;

--- Part 2. Determination of phosphorus content;

--- Part 3. Determination of lead content;

--- Part 4. Carbon, Determination of sulfur content;

--- Part 5. Determination of nickel content;

--- Part 6. Determination of bismuth content;

--- Part 7. Determination of arsenic content;

--- Part 8. Determination of oxygen content;

--- Part 9. Determination of iron content;

--- Part 10. Determination of tin content;

--- Part 11. Determination of zinc content;

--- Part 12. Determination of antimony content;

--- Part 13. Determination of aluminum content;

--- Part 14. Determination of manganese content;

--- Part 15. Determination of cobalt content;

--- Part 16. Determination of chromium content;

--- Part 17. Determination of beryllium content;

--- Part 18. Determination of magnesium content;

--- Part 19. Determination of silver content;

--- Part 20. Determination of zirconium content;

--- Part 21. Determination of titanium content;

--- Part 22. Determination of cadmium content;

--- Part 23. Determination of silicon content;

--- Part 24. selenium, tellurium content was measured;

--- Part 25. Determination of boron content;

--- Part 26. Determination of mercury content;

--- Part 27. Inductively coupled plasma atomic emission spectrometry.

This is Part 7.

This section includes a method, second method, Method three.

This section Method Three identical with ISO 3220. 1975 "Copper and copper alloys --- --- spectrophotometric determination of the amount of arsenic," with international standards Editorial changes made the following ratio.

--- With a decimal point instead of a comma as the decimal point in the international standard ",". ",";

--- Use the "method" instead of "this International Standard";

--- Revised international standard-Africa legal units of measurement;

--- The formula, reg number, table number to re-annotate;

--- Remove the cover of the international standards, directory, foreword and introduction.

This Part replaces GB/T 5121.7-1996 "Copper and copper alloys - Determination of arsenic content" and GB/T 13293.5-1991 "Methods for chemical analysis of high purity copper cathode arsenic molybdenum heteropoly acid - crystal violet spectrophotometric determination of arsenic content." this portion of the GB/T 5121.7-1996, GB/T 13293.5-1991 compared to the main changes are as follows.

--- One method of GB/T 13293.5-1991 amendments adopted "by Hydride Generation - Atomic Fluorescence Spectrometry" instead of the original Standard "Arsenic molybdenum heteropoly acid - crystal violet spectrophotometric method";

--- Second method is GB/T 5121.7-1996 revision, complementing the quality assurance and control provisions, increasing the precision of the terms;

--- Adds three. the equivalent international standard ISO 3220. 1975 "Determination of copper and copper alloys --- --- spectrophotometry amount of arsenic." this part is proposed by the China Nonferrous Metals Industry Association.

The non-ferrous metal part by the National Standardization Technical Committee.

This section Chinalco Luoyang Copper Co., Ltd., Beijing General Research Institute of Mining and Metallurgy, China Nonferrous Metals Industry is responsible Institute of Standards Metrology and Quality Drafted.

A method in this section by the JCC Guixi Smelter, Beijing General Research Institute of Mining and Metallurgy drafted.

A part of this method by the Tongling Nonferrous Metals Group Holdings Co., Ltd. participated in the drafting.