2009•Zhongguo yancao xuebaoRequires access

Simultaneous determination of Cr,Ni,Cu,As,Tl and Pb in soil by inductively coupled plasma mass spectrometry

Qin Cunyong

Abstract

A combination of HNO3-H2O2-HF was used for microwave digestion.Method for simultaneous determination of Cr,Ni,Cu,As,Tl,and Pb in soil by inductively coupled plasma mass spectrometry(ICP-MS) was developed.The linear correlation factors were from 0.9996 to 1.000.The relative standard deviations of measurement were from 0.669% to 3.02%.The recoveries for spiking soil samples and the limits of detection were in the range of 94.68-115.5% and 2.004-312.4 ng/L,respectively.The results showed that the method met the requirements of trace element analysis.The content of Cr,Ni,Cu,As,Tl,and Pb in soil from 45 areas in 7 provinces including Hunan,Hubei,Yunnan,Guizhou,Henan,Fujian,and Liaoning were simultaneously determined by ICP-MS.The differentiation of 6 heavy metal contents in soil and tobacco from different provinces were studied.Cluster analysis report showed that the differentiation of 6 heavy metal contents was significant in tobacco but non-significant in soil.

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Key concepts: Inductively coupled plasma mass spectrometry, Microwave digestion, Chemistry, Soil test, Inductively coupled plasma, Mass spectrometry, Detection limit, Analytical Chemistry (journal)