Determination of Thallium in Geochemical Samples by Inductively Coupled Plasma-Mass Spectrometry with Polyurethane Foam Adsorption

详细信息   

• 责任者：Xu Jinli (Institute of Geophysical ＆ Geochemical Exploration ; Chinese Academy of Geological Sciences ; Langfang 065000 ; China) ; Xing Xia
• 刊名：Rock and Mineral Analysis
• 出版年：2012
• 卷期：31(3)
• 关键词：ICP—MS ; inductively coupled plasma mass spectroscopy ; 铊 ; thallium
• 页码：p.430-433
• 图表：5 tables, 17 refs.
• 分类号：0900
• issnNo：ISSN0254-5357
• isbnNo：CN11-2131/TD

摘要

Geological samples were digested by the mixed acid system of HNO₃-HCLO₄-HF. The T1 was adsorbed by polyurethane foam and determined by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). Under the optimized operation conditions for ICP-MS, the effective monitoring and correction for the long-term drift of the instrument signal, and reduction of the interference of the matrix effect were obtained by using Re as an internal standard. The linear range was 0 ～ 2 μg/mL, the detection limit was 0.003 μg/g, and precision RSD （n = 11 ） was 2.50% ～4.98%. The method was validated by national standards, proving to be accurate and reliable.