摘要
本文运用微波消解,对原子荧光法联测海洋生物中砷和汞的方法进行改进,对仪器条件、微波消解体系、还原剂硼氢化钾浓度等条件进行优化,消除亚硝酸根(NO2-)对测定的干扰。本方法经研究改进后,砷和汞的检测限分别为0.02mg/Kg和0.002mg/Kg;相对标准偏差分别为2.83%和2.05%;通过分析验证,改进后的方法简单、灵敏、结果可靠,可用于海洋生物中砷和汞联测。
The method was improved for the simultaneous determination of arsenic and mercury in marine organism with micro- wave digestion by atomic fluorescence spectrometry. The influence of instrument parameters, digestive system, KBH＋ concentra- tion were optimized. The influence of NO2- was avoided. The developed method showed limits of detection were 0.02mg/Kg for arsenic, 0. 002 mg/Kg for mercury and relative deviatiaons were 2. 83% for arsenic, 2. 05% for mercury. The improved method, which is simple, sensitive and reliable, has good suitability for the simultaneous determination of arsenic and mercury in marine organism.
出处
《福建水产》
2011年第4期14-17,共4页
Journal of Fujian Fisheries
关键词
原子荧光法
联测
砷和汞
atomic fluorescence spectrometry
simultaneous determination
arsenic and mercury
