GB/T 14352.8-2010Methods for chemical analysis of tungsten ores and molybdenum ores - Part 8: Determination of nickel content (English PDF)

3 Polarography in a dimethylglyoxime-sulfosalicylic acid-ammonia-ammonium chloride base solution

4 Flame atomic absorption spectrophotometry

Foreword

GB/T 14352, Methods for chemical analysis of tungsten ores and molybdenum ores, consists of 18 parts:

- Part 1: Determination of tungsten content;

- Part 2: Determination of molybdenum content;

- Part 3: Determination of copper content;

- Part 4: Determination of lead content;

- Part 5: Determination of zinc content;

- Part 6: Determination of cadmium content;

- Part 7: Determination of cobalt content;

- Part 8: Determination of nickel content;

- Part 9: Determination of sulfur content;

- Part 10: Determination of arsenic content;

- Part 11: Determination of bismuth content;

- Part 12: Determination of silver content;

- Part 13: Determination of tin content;

- Part 14: Determination of gallium content;

- Part 15: Determination of germanium content;

- Part 16: Determination of selenium content;

- Part 17: Determination of tellurium content;

- Part 18: Determination of rhenium content.

This part is Part 8 of GB/T 14352.

This part replaces GB/T 14352.8-1993, Methods for chemical analysis of tungsten ores and molybdenum ores - Determination of nickel content by polarography in dimethylglyoxime - sulfosalicylic acid - ammonium hydroxide - ammonium chloride supporting electrolyte.

Compared with GB/T 14352.8-1993, the main changes in this part are as follows:

- a flame atomic absorption spectrometric method for the determination of nickel content has been added;

- warning and caution statements have been added;

- the drying temperature of the sample has been modified.

Annex A of this part is informative.

This part was proposed by the Ministry of Land and Resources of the People's Republic of China.

This part is under the jurisdiction of the National Technical Committee for Standardization of Land and Resources.

Responsible drafting organization of this part: National Research Center for Geoanalysis.

Drafting organization of this part: Geological Survey of Jiangsu Province (Nanjing Mineral Resources Supervision and Testing Center, Ministry of Land and Resources).

Chief drafters of this part: Huang Guangming, Tang Zhiyun, Jiang Ye.

The previous editions of the standard replaced by this part are:

- GB/T 14352.8-1993.