海水中铜锌铅镉的萃取-反萃取法同时提取-原子吸收光谱法测定  

Determination of Trace Copper,Zinc,Lead and Cadmium in Seawater by Atomic Absorption Spectrometry after Solvent Extraction

作　　者：马元庆[1] 靳洋[1] 刘义豪[1] 孙玉增[1] 李磊[2] 

机构地区：[1]山东省海洋水产研究所,山东烟台264006 [2]江南大学食品学院,江苏无锡214122

出　　处：《分析科学学报》2009年第4期478-480,共3页Journal of Analytical Science

基　　金：国家海洋局海洋公益性行业科研重点项目(No.200805031)

摘　　要：采用萃取-反萃取法同时提取出海水中Cu、Zn、Pb、Cd,Cu、Pb、Cd石墨炉法测定,Zn用火焰法测定。对样品的前处理方法和最佳仪器条件进行了研究,并通过加标实验验证了方法的可靠性。结果表明:萃取-反萃取法能完全满足海水中Cu、Zn、Pb、Cd的前处理要求,可节省一半前处理时间,有溶液稳定、环保、节省试剂等优点。A method for the determination of trace Cu, Zn, Pb and Cd in sea water by atomic absorption spectrometry after extraction and back-extraction was proposed in this paper. For the determination of Cd, Pb and Cd, graphite furnace atomic absorption spectremetry with Mg（NO3）2 as matrix moditier was used, while flame atomic absorption spectrometry was employed for the determination of Zn. The developed method was used for the determination of trace Cu, Zn, Pb and Cd in sea water with recoveries in the range of 96.9 % -100.8%.

关 键 词：萃取-反萃取 海水 原子吸收光谱法 

分 类 号：O657.31[理学—分析化学]