引用本文:叶敏强,张君,任妍冰,郭朝,朱晨华等.ICP-MS/MS直接测定海水中12种痕量金属元素[J].环境监控与预警,2023,15(1):56-60
YE Min-qiang, ZHANG Jun, REN Yan-bing, GUO Zhao, ZHU Chen-huaet al.Direct Determination of 12 Trace Metal Elements in Seawater by ICP-MS/MS[J].Environmental Monitoring and Forewarning,2023,15(1):56-60
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ICP-MS/MS直接测定海水中12种痕量金属元素
叶敏强,张君,任妍冰,郭朝,朱晨华等1,2
1.江苏省连云港环境监测中心,江苏 连云港 222000;2.安捷伦科技(中国)有限公司,上海 200080
摘要:
建立一种采用电感耦合等离子体串联质谱 (ICP-MS/MS) 直接测定海水中12种元素的分析方法。采用标准加入法及配置超高基体进样系统实现基体匹配,应用ICP-MS/MS的多种分析模式测定海水中钒(V)、铬(Cr)、锰(Mn)、钴(Co)、镍(Ni)、铜(Cu)、锌(Zn)、砷(As)、钼(Mo)、镉(Cd)、铊(Tl)、铅(Pb)12种痕量元素。用该方法测定海水标准参考物质,结果准确。测定实际海水样品,加标回收率为85.0%~108%,相对标准偏差为1.5%~5.4%。12种元素的方法检出限为0.003~0.085 μg/L,定量下限为0.012~0.340 μg/L。该方法运行成本低,操作便捷,可作为实验室海水元素分析的常规检测方法。
关键词:  海水  痕量金属元素  直接测定  多种分析模式  电感耦合等离子体串联质谱
DOI:
分类号:X834
基金项目:江苏省海洋资源开发研究院开放基金项目(JSIMR202112)
Direct Determination of 12 Trace Metal Elements in Seawater by ICP-MS/MS
YE Min-qiang, ZHANG Jun, REN Yan-bing, GUO Zhao, ZHU Chen-huaet al1,2
1. Jiangsu Lianyungang Environmental Monitoring Center, Lianyungang,Jiangsu 222000, China;2. Agilent Technologies (China) Co. Ltd.,Shanghai 200080,China
Abstract:
A method for direct determination of 12 elements in seawater was established. Matrix matching was achieved by standard addition method and equipped with ultra high matrix introduction system. The trace elements such as V,Cr,Mn,Co,Ni,Cu,Zn,As,Mo,Cd,Tl and Pb in seawater are directly analyzed by multiple analysis modes of ICP MS/MS. The method has been applied to the determination of CRMs of seawater GBW(E)080040 and GBW(E)080230 with satisfactory results. The recovery rates of actual seawater are between 85.2% and 108%, and the relative standard deviations are between 1.5% and 5.5%. The method detection limits of 12 elements in seawater are 0.003~0.085 μg/L, and the quantification limits are 0.012~0.340 μg/L. This method is low cost and easy to be operated and can be used as a routine detection method for elements in seawater.
Key words:  Seawater  Trace metal elements  Direct determination  Multiple analysis modes  ICP-MS/MS