Determination of Selenium in Biological Materials Using an Ion-Selective Electrode |
| |
Authors: | Wang Weixiao Li Jingyin Duan Huimin Ha Jing Li Shufang |
| |
Institution: | (1) Department of Chemistry, Faculty of Science, Hebei University of Technology & Science, 050018 Shijiazhuang, P.R. China |
| |
Abstract: | A method was developed for determining selenium with a self-made ion-selective electrode was developed. This electrode was
made by using Ag2Se as electroactive material. Optimal working conditions and interferences were investigated. The electrode exhibits good
potentiometric response for Se2− ions over the concentration range from 6 × 10−7 mol · L−1 to 1 × 10−4 mol · L−1 with a Nernstian slope of 28 ± 1 mV per decade and a detection limit of about 4.5 × 10−7 mol · L−1. It was used over six months and exhibits good selectivity and sensitivity towards Se2−. The method was applied to determine selenium in biological materials. The recovery ranges between 92% and 105.5%, and the
relative standard derivation is less than 3.6% (n = 6). |
| |
Keywords: | : Selenium ion-selective electrode hydride generation biological material |
本文献已被 SpringerLink 等数据库收录! |