YS/T 281.13-2011Methods for chemical analysis of cobalt. Part 13: Determination of sulphur content. Infra-red absorption method after high frequency induction furnace combustion (English PDF)

Foreword

YS/T 281 "cobalt chemical analysis method" is divided into the following 20 sections.

--- Part 1. Determination of iron content sulfonic acid spectrophotometry

--- Part 2. Determination of the amount of chrome aluminum Azure S Spectrophotometry

--- Part 3. Determination of silicon content - Molybdenum blue spectrophotometric method

--- Part 4. Determination of arsenic content - Molybdenum blue spectrophotometric method

--- Part 5. Determination of phosphorus content - Molybdenum blue spectrophotometric method

--- Part 6. Determination of magnesium content - Flame atomic absorption spectrometry

--- Part 7. Determination of zinc content - Flame atomic absorption spectrometry

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

--- Part 9. Determination of lead content - flame atomic absorption spectrometry

--- Part 10. Determination of nickel content by flame atomic absorption spectrometry

--- Part 11. Flame atomic copper, manganese content absorption spectrometry

--- Part 12. arsenic, antimony, bismuth, tin, lead and determining the amount of electrothermal atomic absorption spectrometry

--- Part 13. Determination of sulfur content high frequency induction furnace combustion infrared absorption method

--- Part 14. Determination of the amount of carbon high-frequency induction furnace combustion infrared absorption method

--- Part 15. arsenic, antimony, bismuth contents - Hydride Generation - Atomic Fluorescence Spectrometry

--- Part 16. Determination of DC arc atomic arsenic, cadmium, copper, zinc, lead, bismuth, tin, antimony, silicon, manganese, iron, nickel, aluminum, magnesium content of the emitted light Spectroscopy

--- Part 17. aluminum, manganese, nickel, copper, zinc, cadmium, tin, antimony, lead, bismuth content - Inductively Coupled Plasma Mass Spectrometry

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

--- Part 19. calcium, magnesium, manganese, iron, cadmium, zinc content - Inductively coupled plasma atomic emission spectrometry

--- Part 20. Determination of oxygen content - Impulse - infrared absorption method this section YS/T Part 13 281.

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

The partial replacement of YS/T 281.13-1994 "Methods for chemical analysis of cobalt distillation - Determination of sulfur content oscillopolarographic Law" and YS/T 281.14-1994 "cobalt chemical analysis method of high frequency induction furnace combustion infrared absorption spectrometry determination of sulfur content." And YS/T 281.13-1994 and YS/T 281.14-1994 compared, this section has the following changes.

--- Determination of unified high-frequency induction furnace combustion infrared absorption method;

--- Analysis Extension limit increased from 0.002 to 0.00050 percent;

--- Text format has been modified, supplemented with quality assurance and control provisions, increase the repeatability limit and reproducibility limit;

--- Complement the test reporting requirements.

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

1 Scope

This section specifies the determination of cobalt in sulfur content.

This section applies to the determination of cobalt in sulfur content. Measurement range. 0.00050% to 0.050%.

2 Method summary

In the presence of flux, high-frequency induction furnace and the oxygen flow, so that the sample burned at high temperatures, to generate sulfur dioxide gas into the red External absorption cell, after which the instrument automatically measure the absorption of infrared energy to calculate and display the results.

3 Reagents and materials

3.1 scavenger and catalyst.

3.1.1 Anhydrous magnesium perchlorate.

3.1.2 caustic soda asbestos.

3.1.3 glass wool.

3.1.4 cotton.

3.1.5 platinized silica gel.

3.2 Flux. sulfur tungsten, tin, iron. W Sn Fe = 2g (0.2 ~ 0.25) g 0.5g.

NOTE. iron sulfur content should be 4 Instruments and working conditions High-frequency infrared gas analyzer (attached electronic exchange regulator).

--- High-frequency furnace power. 1.0kW ~ 2.5kW.

--- Frequency. > 6.0MHz.

--- Detector sensitivity. <=1µg/g.