GB/T 1819.10-2017Methods for chemical analysis of tin concentrates—Part 10: Determination of sulfur content—High frequency combustion with infrared absorption method and potassium iodate titrimetric method (English PDF)

Foreword

GB/T 1819 "tin concentrate chemical analysis method" is divided into 21 parts.

--- Part 1. Determination of moisture thermal drying method;

--- Part 2. Determination of tin content potassium iodate titration;

--- Part 3. Determination of iron content cerium sulfate titration method;

--- Part 4. Determination of lead content by flame atomic absorption spectrometry and Na2 EDTA titration;

--- Part 5. Determination of arsenic Arsenic antimony molybdenum blue spectrophotometry and iodometric titration;

--- Part 6. Determination of the amount of antimony; malachite green spectrophotometry and flame atomic absorption spectrometry;

--- Part 7. Determination of bismuth content by flame atomic absorption spectrometry;

--- Part 8. Determination of zinc content by flame atomic absorption spectrometry;

--- Part 9. Determination of the amount of tungsten trioxide; potassium thiocyanate spectrophotometry;

--- Part 10. Determination of sulfur content High-frequency induction furnace combustion infrared absorption method and potassium iodate titration;

--- Part 11. Determination of the amount of aluminum oxide chromium azure S spectrophotometry;

--- Part 12. Determination of the amount of silica silicon molybdenum blue spectrophotometry and sodium hydroxide titration;

--- Part 13. Determination of magnesia, calcium oxide content; Flame atomic absorption spectrometry;

--- Part 14. Determination of copper content by flame atomic absorption spectrometry;

--- Part 15. Determination of fluorine content ion selective electrode method;

--- Part 16. Determination of silver content; Flame atomic absorption spectrometry;

--- Part 17. Determination of mercury content; atomic fluorescence spectrometry;

--- Part 18. Determination of nickel content by flame atomic absorption spectrometry;

--- Part 19. Determination of cobalt content; Flame atomic absorption spectrometry;

--- Part 20. Determination of cadmium content by flame atomic absorption spectrometry;

--- Part 21. Determination of calcium, magnesium, copper, lead, zinc, arsenic, antimony, bismuth, silver content Inductively coupled plasma atomic emission spectrometry.

This section GB/T 1819 Part 10.

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

This Part Replaces GB/T 1819.10-2004 "Methods for chemical analysis of tin concentrates Determination of sulfur content High-frequency infrared absorption method and combustion - Potassium iodate titration ", this part compared with GB/T 1819.10-2004, the main technical changes are as follows.

Method 1 High-frequency induction furnace combustion infrared absorption method --- The lower limit of determination from the original "0.0010%" revised "0.050%";

--- The use of flux has been modified;

--- Modify the precision part;

--- Increase the test report terms.

Method 2 potassium iodate titration --- The upper limit of measurement will be changed from "10.00%" to "20.00%";

--- Standard calibration standard titration solution from the original "lead sulfate" to "sulfur standard substance";

--- Standard titration solution concentration from the original "0.01mol/L and 0.02mol/L" to "0.03mol/L";

--- Modify the precision part;

--- Increase the test report terms.

This part replaces the standards previously issued as.

--- GB/T 1829-1979;

--- GB/T 1819.10-2004.

1 Scope

This section GB/T 1819 specifies the determination of sulfur content of tin concentrate.

This section applies to the determination of sulfur in tin concentrate. Method 1 Determination range.0.050% ~ 0.50%; Method 2 Determination of the range. > 0.50% ~ 20.00%.

2 Method 1 High-frequency induction furnace combustion infrared absorption method