Determination of Trace Selenium in Environmental Water Samples by Using Resonance Light Quenching Method
详细信息
- 责任者：Li Renyu (Lianyungang Teachers College ; Lianyungang 222006 ; China) ; Li Yongmei
- 刊名：Rock and Mineral Analysis
- 出版年：2011
- 卷期：30(3)
- 关键词：硒 ; selenium ; 痕量元素分析 ; trace element analysis
- 页码：p.328-332
- 图表：8 illus., 2 tables, 24 refs.
- 分类号：0900
- 出版序号：909
- issnNo：ISSN0254-5357
- isbnNo：CN11-2131/TD
摘要
A new resonance light quenching method for the quantification of trace selenium has been developed. The method is based on the reaction of Se (Ⅳ) with excess I-in 0.14 mol/L H2SO4 solution to produce I-3 with arabic gum (AG). After adding NaAc, I-3 reacts with methylene blue (MB) to form an ion-association complex, resulting in resonance light quenching at a wavelength of 288 nm. This method was applied to the quantification of trace selenium in environmental water samples with RSD of 1.3%~3.6% (n=5) and recoveries from 97.4% to 100.8%.