摘要
应用氢化物发生原子荧光光谱技术,同时测定海水养殖基地环境介质底泥、海水和水产品中微量As和Hg。研究了载流、KBH4浓度对As和Hg测定的影响。在最佳实验操作条件下,As和Hg检出限分别为0.028 3μg/L、0.017 4μg/L。底泥中As和Hg的加标回收率分别为89.7%～112.6%和91.7%～110.8%,相对标准偏差分别为2.7%～5.3%和2.2%～4.3%;海水中As和Hg的加标回收率分别为90.2%～101.8%和90.0%～108.8%,相对标准偏差分别为3.1%～5.6%和2.1%～4.5%;水产品中As和Hg的加标回收率分别为89.6%～102.0%和89.2.0%～108.0%,相对标准偏差分别为2.6%～4.9%和1.7%～4.4%。
A systemic method for simultaneous determination of arsenic and mercury of sediment, seawater and fishery product in seawater aquiculture base was developed by Hydride Generation-double channel Atomic Fluorescence Spectrometry （HG-AFS）. Effects of flowing acid and concentration of KBH4 solution on the determination of As and Hg were studied and optimized. The detection limits were found to be 0. 028 3μg/L and 0. 017 4μg/L for As and Hg, respectively. The proposed method was applied to the determina- tion of As and Hg. The values of RSD＇s （ n = 10） were in the ranges of 2.7% - 5.3% （As） and 2.2% - 4.3% （Hg） in sediments, 3.1% - 5.6% （As） and 2.1% -4.5% （Hg） in seawater, 2.6% - 4.9% （As） and 1.7% - 4.4% （Hg） in fishery product, respectively. Result s of recovery test were found in the ranges of 89.7 % - 112.6% （As） and 91.7 % - 110.8 % （Hg） in sediments, 90.2% -101.8%（As） and 90.0% ~108.8% （Hg） in seawater, 89.6% -102.0% （As） and 89.2.0% -108.0% （Hg） in fishery product, respectively.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2012年第2期254-256,281,共4页
Marine Environmental Science
基金
国家质检总局科技计划项目(2010IK186)
