YS/T 556.12-2011Methods for chemical analysis of antimony concentrates. Part 12: Determination of bismuth content. Flame atomic absorption spectrometric method (English PDF)

Foreword

This section is in accordance with GB/T 1.1-2009 given rules drafted.

YS/T 556 "Methods for chemical analysis of antimony concentrate," a total of 16 parts.

--- Part 1. Determination of antimony content cerium sulfate titration;

--- Part 2. Determination of arsenic content potassium bromate titration;

--- Part 3. Determination of lead content by flame atomic absorption spectrometry;

--- Part 4. Wet water storage Gravimetric method;

--- Part 5. Determination of zinc content - Flame atomic absorption spectrometry;

--- Part 6. Determination of the amount of selenium by hydride generation - atomic fluorescence spectrometry;

--- Part 7. Determination of the amount of mercury atomic fluorescence spectrometry;

--- Part 8. Determination of sulfur content - Combustion neutralization method;

--- Part 9. Determination of the amount of gold fire assay;

--- Part 10. Determination of copper content - Flame atomic absorption spectrometry;

--- Part 11. Determination of cadmium content by flame atomic absorption spectrometry;

--- Part 12. Determination of bismuth content by flame atomic absorption spectrometry;

--- Part 13. Determination of nickel content by flame atomic absorption spectrometry;

--- Part 14. Determination of the amount of silver by flame atomic absorption spectrometry;

--- Part 16. lead, zinc, copper, cadmium, nickel content - Inductively coupled plasma atomic emission spectrometry.

This is Part 12.

The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.

This section is responsible for drafting unit. tin mine Twinkling Star Antimony Industry Co., Ltd., Beijing General Research Institute of Mining and Metallurgy.

This section is drafted. Tin Mine flash-antimony industry limited liability company.

Participated in the drafting of this section. Beijing Mining Research Institute, Hunan Chenzhou Mining Co., Hechi Guangxi Nonferrous Metals Group Xin Smelting Co., Ltd. China.

1 Scope

This section YS/T 556 specifies the method for determination of the amount of bismuth antimony concentrate.

This section applies to the determination of the amount of bismuth antimony concentrate. Determination range of 0.0010% to 0.050%.

2 Method summary

Sample was dissolved in aqua regia, in a sulfuric acid medium, proper temperature control, addition of hydrochloric acid - volatile hydrobromide except antimony in hydrochloric acid medium, in atom Absorption Spectrometer measured at a wavelength of 223.1nm bismuth absorbance.

3 Reagents

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity.

3.1 hydrochloric acid (rho = 1.19g/mL).

3.2 nitric acid (rho = 1.42g/mL).

3.3 sulfate (rho = 1.84g/mL).

3.4 hydrobromide (rho = 1.48g/mL).

3.5 hydrochloride (11).

3.6 nitric acid (11).

3.7 nitric acid (19).

3.8 sulfate (11).

3.9 hydrochloric acid - hydrogen bromide. an equal volume of hydrochloric acid (3.1) and hydrobromic acid (3.4) mixed preparation.

4 Instrument

Atomic absorption spectrometer, with a bismuth hollow cathode lamp.

Under optimum working conditions for those who can reach the following indicators can be used.