渔业海水中铅的快速定量检测方法  

Quantitative test method for rapid determination of lead in fishery seawater

作　　者：李猛[1] 张旭志[2] 崔毅[2] 曲克明[2] 马绍赛[2] 杨凤[1] 

机构地区：[1]大连海洋大学水产与生命学院,116023 [2]农业部海洋渔业可持续发展重点实验室中国水产科学研究院黄海水产研究所,青岛266071

出　　处：《渔业科学进展》2013年第5期89-96,共8页Progress in Fishery Sciences

基　　金：国家自然科学基金(21005086);山东省自然科学基金(ZR2011BQ029)共同资助

摘　　要：以导电炭黑糊电极(CCBPE)为工作电极,建立了海水中重金属铅的阳极溶出伏安检测新方法。实验研究了支持电解质种类、pH、富集电位、富集时间、干扰物质等相关影响参数。结果表明,在最优条件下铅的检测限为0.1μg/L。据之建立了海水中重金属铅的快速检测方法,并将其应用于青岛近海渔业海水样品中铅含量的检测。检测结果与原子吸收光谱法所测结果一致,表明这种操作简单、快速、免汞、低费用的检测模式具有潜在的应用价值。A new method for rapid determination of lead in fishery seawater was developed by using highly sensitive conductive carbon black paste electrode （CCBPE） as the working electrode.CCBPE showed many attractive electroanalytical properties,such as low background current,large electrochemical active area,good accumulation ability and so on.The heavy metal lead showed sensitive response at the CCBPE with anodic stripping voltammetry mode.Some important factors,including the supporting electrolyte,pH,accumulation potential,accumulation time,interference substances,etc.were studied.Under the optimized conditions,a detecting limit of 0.1μg/L was obtained.Based on the results,a new method for determining lead in seawater was developed.The new method was used to determine the lead concentration in real seawater samples collected from nearshore site in Qingdao.It was found that the test data were in good agreement with that obtained by atomic absorption spectrometry,indicating that the simple,rapid,mercury-free and cost-effective method had a great potential value for application.

关 键 词：海水重金属 铅 快速检测 溶出伏安法 导电炭黑糊电极 

分 类 号：TS255.1[轻工技术与工程—农产品加工及贮藏工程] S948[轻工技术与工程—食品科学与工程]