摘要
建立了一种简易、快速检测天然水中痕量硒的流动注射化学发光法。该法基于NaIO4-H2O2（pH7．0）氧化Se（0）生成Se（Ⅳ）所产生O的化学发光，发光强度与一定浓度范围内的Se呈线性关系，加入环己烷和Triton-100能增强这一体系的发光强度。该法测定Se的线性范围为1．0×10^-7～1．0×10^-5 mol·L^-1，检测限为4．2×10^-8 mol·L^-1，对4．0×10^-7 mol·L^-1的Se进行测定的RSD为3.4％（n=8）。用该法对天然水体中Se进行了测定，结果满意。
A fast and simple chemiluminescence （CL） method for flow injection analysis of selenium in the system of NaIO4-H2O2 was presented. The luminescence was produced from Se（0） to Se（Ⅳ）oxidized by NaIO4-H2O2 system. And the intensity was linear with Se concentration added with the linear range of 1.0×10^-7～1.0×10^-5mol·L^-1. The CL can be enhanced by Triton X - 100 and cyhexylane. The relative standard deviation of this method is 3.5% by 4.0×10^-7mol·L^-1 Se for 8 determinations, and the detection limit is 4.2×10^-8mol·L^-1 The method was successfully used for the determination of trace of Se in natural waters with satisfactory results.
出处
《广东微量元素科学》
CAS
2006年第4期48-52,共5页
Trace Elements Science
基金
国家自然科学基金(No.60508012)
