YS/T 281.9-2011Methods for chemical analysis of cobalt. Part 9: Determination of lead content. Flame atomic absorption spectrometry (English PDF)

Foreword

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

Part 1. Determination of iron content - Sulfosalicylic acid spectrophotometric method Part 2. Determination of aluminum content - Chromazu S spectrophotometric method 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 spectrometric method - Part 7. Determination of zinc content - Flame atomic absorption spectrometric method Part 8. Determination of cadmium content - Flame atomic absorption spectrometric method Part 9. Determination of lead content - Flame atomic absorption spectrometric method Part 10. Determination of nickel content - Flame atomic absorption spectrometric method - Part 11. Determination of copper and manganese - Flame atomic absorption spectrometric method - Part 12. Determination of arsenic, antimony, bismuth, tin and lead - Electrothermal atomic absorption spectrometry - Part 13. Determination of sulfur content - High frequency induction furnace combustion infrared absorption method - Part 14. Determination of carbon content - High frequency induction furnace combustion infrared absorption method - Part 15. Determination of arsenic, antimony and bismuth - Hydride generation - atomic fluorescence spectrometry - Part 16. Determination of the amount of arsenic, cadmium, copper, zinc, lead, bismuth, tin, antimony, silicon, manganese, iron, nickel, aluminum and magnesium.

Spectrum method

- Part 17. Determination of aluminum, manganese, nickel, copper, zinc, cadmium, tin, antimony, lead and bismuth inductively coupled plasma mass spectrometry - Part 18. Determination of sodium content - Flame atomic absorption spectrometric method - Part 19. Determination of calcium, magnesium, manganese, iron, cadmium and zinc - Inductively coupled plasma emission spectrometric method - Part 20. Determination of the amount of oxygen - Infrared absorption method this section is part 9 of YS/T 281.

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

This part replaces YS/T 281.9-1994 "cobalt chemical analysis method flame atomic absorption spectrometric determination of lead content". versus YS/T 281.9-1994 compared to this part of the main changes are as follows.

--- The text format has been modified to supplement the quality assurance and control terms, increasing the repeatability and reproducibility limits;

- Added the requirements for the test report.

This part of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243) proposed and centralized.

This standard is responsible for drafting units. Jinchuan Group Co., Ltd., Beijing Mining and Metallurgy Research Institute.

This part is responsible for drafting units. Beijing Mining and Metallurgy Research Institute.

This part participates in the drafting unit. Shenzhen Greentime High Technology Co., Ltd., Jinchuan Group Co., Ltd.

1 Scope

This part of YS/T 281 specifies the determination of lead in cobalt.

This part applies to the determination of lead in cobalt. Determination range. 0.0015% ~ 0.0070%.

2 Method summary

The sample was decomposed with nitric acid, and in a dilute nitric acid medium, an air-acetylene flame was used at a wavelength of 217.0 nm at the atomic absorption spectrometer.

Lead absorbance.

The standard solution should contain the same concentration of cobalt matrix as the sample solution.

3 Reagent

If no special instructions, the reagents used for the analysis of pure reagents, preparation and analysis of water are secondary distilled water or considerable purity of the experiment Room water.

4 Instruments

Atomic Absorption Spectrometer with Lead Hollow Cathode Lamp.

In the best working conditions of the instrument, who can achieve the following indicators can be used.

--- Minimum Sensitivity. The concentration of lead should be no more than 0.47 µg/mL in a solution consistent with the matrix of the test sample solution.

Precision. the maximum concentration of the standard solution measured 10 times the absorbance, the standard deviation should not exceed 1.0% of the average absorbance;

The standard absorbance should be measured with a minimum concentration of standard solution (not a "zero" standard solution) with a standard deviation of no more than the highest concentration