YS/T 1050.10-2016Methods for chemical analysis of lead-antimony concentrate. Part 10: Determanation of thallium. Inductively coupled plasma mass spectrometry and inductively coupled plasma atomic emission spectrometry (English PDF)

2.1 Method Summary

Samples of hydrochloric acid, nitric acid, hydrofluoric acid, perchloric acid dissolved, hydrogen bromide volatile in addition to antimony. To iridium as the internal standard, in the hydrochloric acid medium, with the inductance coupling Determination of Thallium by Plasma Mass Spectrometry.

2.2 Reagents

Unless otherwise stated, only reagents and primary water identified as excellent grade were used in the analysis.

2.2.1 Hydrochloric acid (rho1.19g/mL).

2.2.2 nitric acid (rho1.42g/mL).

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

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

2.2.5 hydrobromic acid (rho1.49g/mL).

2.2.6 Thallium standard storage solution. Weigh 0.1000g metal thallium (wTl >= 99.99%) in 100mL beaker, add 50mL hydrochloric acid (2.2.1) dissolved, into the 1000mL volumetric flask, diluted with water to the mark, mix. This solution 1mL thallium containing 100µg.

2.2.7 Thallium standard solution A. Remove 10.00mL thallium standard storage solution (2.2.6) In a 100mL volumetric flask, add 5mL hydrochloric acid (2.2.1), diluted with water to the mark, mix, this solution 1mL thallium containing 10µg.

2.2.8 Thallium standard solution B. Remove 10.00mL thallium standard solution (2.2.7) In a 100mL volumetric flask, add 5mL hydrochloric acid (2.2.1) Diluted with water to the mark, mix, this solution 1mL thallium containing 1µg.

2.2.9 iridium standard storage solution. Weigh 0.1000g iridium powder (wIr >= 99.99%), placed in 50mL glass tube, add 8mL hydrochloric acid (2.2.1), 2 mL of hydrogen peroxide, and sealed. Dissolved at 150 ° C for 48 h, cooled and opened. The tube test solution was washed into a 100 mL volumetric flask, Add 10mL hydrochloric acid (2.2.1), diluted with water to the mark, mix. This solution 1mL containing 1000µg iridium.

2.2.10 iridium internal standard solution. remove the 1.00mL iridium standard storage solution (2.2.9) in a 1000mL volumetric flask, add 50mL hydrochloric acid (2.2.1), diluted with water to the mark, mix well. This solution 1mL containing 1µg iridium.

2.3 Instruments

2.3.1 inductively coupled plasma mass spectrometer, the instrument quality resolution is better than (0.8 ± 0.1) amu.