ICP-MS法测定隐伏矿床植物中的多种微量元素

采用HNO3-H2O2处理样品,Rh作为内标进行基体效应补偿,通过电感耦合等离子体质谱(ICP-MS)法,测定隐伏矿床植物样品中的Ti、Co、Ni、Cu、Zn、Mo、Cd、W、Pb共9种微量元素的含量。结果建立的方法的各元素检出限为0.01～0.50 ng.ml-1,样品分析结果的相对标准偏差为1.32%～6.32%,加标回收率为91.7%～103.5%。建立的方法简便、快速、准确,适用于隐伏矿床植物中微量元素的测定。

Determination of Trace Elements Plant of Concealed Mineral Deposit by ICP-MS

ICP-MS was applied to simultaneously determine trace elements（Ti,Co,Ni,Cu,Zn,Mo,Cd,W,Pb） plant concealed mineral deposit.The sample was dissolved with HNO3-H2O2 and the matrix effect was corrected by the in-line addition of internal standard.Detection limits of these element were in the range of 0.01～0.50ng·ml-1.The relative standards（RSD） were in the range of 1.32%～6.32%,and the recoveries were in the range of 91.7%～103.5%.The method is quick,accurate,efficient and can be applied to determine trace elements in plant of concealed deposit.