Determination of Trace Metal Impurities in High Pure Tin Oxide Electrode Material by Inductively Coupled Plasma Mass Spectrometry
10.11895/j.issn.0253-3820.150577
- VernacularTitle:电感耦合等离子体质谱法测定高纯二氧化锡电极材料中痕量金属杂质离子
- Author:
Wei XU
;
Yuzhen LI
;
Taicheng DUAN
;
Hangting CHEN
- Publication Type:Journal Article
- Keywords:
Inductively coupled plasma spectrometry;
Tin oxide electrode material;
Metal impurities;
Chloride volatilization separation
- From:
Chinese Journal of Analytical Chemistry
2015;(9):1349-1352
- CountryChina
- Language:Chinese
-
Abstract:
A new method for determination of trace Cu, Cr, Mn, Co, Ni, Cd, Fe and Pb impurities in high pure tin oxide material was proposed. 0. 1 g of sample was successfully digested at 230℃ in 3 h when autoclaves with high pressure and high temperature were used. After that, over 99. 9% of the matrix Sn was removed by chloride volatilization at 150℃ for 1. 5 h, which eliminated the matrix effect and spectra interference in the following ICP-MS detection. The recoveries for all the analytes of the spiked test were 100%±5%, the RSDs for 6 runs of sample analysis were from 0. 09% to 3. 68%, and the limits of detection (LOD, 3σ) were from 0. 002 mg/kg to 0. 034 mg/kg, which indicated that the established method were of both accuracy and high sensitivity, and could be applied for the analysis of samples with purity up to 6N. Finally, three samples specified with 4N purity were analyzed by this method.
