YS/T 820.9-2012Methods for chemical analysis of lateritic nickel ore. Part 9: Determination of scandium and cadmium contents. Inductively coupled plasma mass spectrometry (English PDF)

Foreword

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

YS/T 820-2012 "Methods for chemical analysis of nickel laterite ore" is divided into 26 parts.

--- Part 1. Determination of nickel content by flame atomic absorption spectrometry;

--- Part 2. Determination of the amount of nickel dimethylglyoxime spectrophotometry;

--- Part 3. Determination of total iron content of dichromate method;

--- Part 4. Determination of phosphorus content - Molybdenum blue spectrophotometric method;

--- Part 5. Determination of cobalt content by flame atomic absorption spectrometry;

--- Part 6. Determination of copper content - Flame atomic absorption spectrometry;

--- Part 7. Determination of calcium and magnesium content by flame atomic absorption spectrometry;

--- Part 8. Determination of the amount of silica silicon potassium fluoride titration;

--- Part 9. scandium, cadmium content - Inductively Coupled Plasma - Mass Spectrometry;

--- Part 10. calcium, cobalt, copper, magnesium, manganese, nickel, zinc and phosphorus content - Inductively Coupled Plasma - Atomic Emission Spectrometry;

--- Part 11. Determination of the amount of fluorine and chlorine ion chromatography;

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

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

--- Part 14. Determination of zinc content - Flame atomic absorption spectrometry;

--- Part 15. Determination of cadmium content by flame atomic absorption spectrometry;

--- Part 16. carbon, sulfur content was measured by high frequency combustion infrared absorption spectroscopy;

--- Part 17. arsenic, antimony, bismuth contents hydride generation - atomic fluorescence spectrometry;

--- Part 18. Determination of mercury content - Cold atomic absorption spectrometry;

--- Part 19. Determination of energy aluminum, chromium, iron, magnesium, manganese, nickel and silicon content dispersive X-ray fluorescence spectrometry;

--- Part 20. Determination of aluminum content by EDTA titration;

--- Part 21. Determination of chromium content ammonium ferrous sulfate titration;

--- Part 22. Determination of magnesium content EDTA titration;

--- Part 23. cobalt, iron, nickel, phosphorus, aluminum oxide, calcium oxide, chromium oxide, magnesium oxide, manganese oxide, silicon dioxide and titanium dioxide volume Wavelength dispersive X-ray fluorescence spectrometry;

--- Part 24. Determination of hygroscopic water weight method;

--- Part 25. Determination of combined water content - Gravimetric method;

--- Part 26. Determination of loss on ignition - Gravimetric method.

This is Part 9 YS/T 820-2012 in.

This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized.

This standard by the Beijing General Research Institute of Mining and Metallurgy, People's Republic of China Bayuquan Exit Inspection and Quarantine, Jinchuan Group Ltd, Drafted.

1 Scope

This section YS/T 820 specifies the method for determination of scandium laterite nickel ore and cadmium content.

This section applies to the determination of cadmium content of scandium and nickel laterite ore. Measurement range. 0.0001% to 0.007%.

2 Method summary

Sample with nitric acid, hydrochloric acid, hydrofluoric acid decomposition of perchloric acid was added and evaporated to catch fluorine, in dilute nitric acid medium by ICP-MS using online Join Rhodium internal calibration method for the determination of scandium laterite nickel ore and cadmium content.

3 Reagents and materials

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

Nitrate 3.1 (rho1.42g/mL).

3.2 nitric acid (11).

3.3 hydrochloride (rho1.19g/mL).

3.4 Hydrofluoric acid (rho1.15g/mL).

3.5 perchloric acid (rho1.67g/mL).

3.6 water (resistivity >=18.2Mohm.cm).

3.7 scandium standard stock solution. Weigh 1.5337g scandium oxide (wSc2O3>=99.9%) placed in 150mL beaker, add 50mL of nitric acid (3.2), dissolved by heating, cooling, transferred to 1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL 1mg containing scandium.

3.8 cadmium standard stock solution. Weigh 1.0000g cadmium (wCd>=99.99%), placed in 150mL beaker, add 50mL of nitric acid (3.2), dissolved by heating, cooling, transferred to 1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL 1mg containing cadmium.

3.9 mixed standard solution. Pipette 1.00mL scandium are standard stock solution (3.7) and cadmium standard stock solution (3.8) in 100mL Capacity Flask, 2mL nitric acid (3.1), dilute to the mark and mix. This solution 1mL containing scandium and cadmium each 10µg.

3.10 Internal standard solution. Rh standard solution (10ng/mL), nitric acid medium (198).

3.11 argon [wAr>=99.996%].

4 Instrument

Inductively coupled plasma mass spectrometry. mass resolution better than (0.8 ± 0.1) amu.

And quality scandium internal standard and cadmium determination of rhodium isotopes shown in table 1.