Simultaneous ICP-MS Determination of 13 Trace Elements in Vegetables

ICP-MS was applied to the simultaneous determination of 13 trace elements,i.e.Sr,Cu,Se,Mo,Mn,Zn,Co,Cr,Cd,Pb,Ni,As and Al in vegetables.Mass spectrometry interference and non-mass spectrometry interference were corrected.Linear relationships between values of signal intensity and mass concentration of the 13 heavy mental elements were kept in definite ranges.Detection limits(3s) found were ranged from 0.000 4 to 1.5 μg·L-1.The proposed method was applied to the analysis of standard materials of vegetable,giving results in consistency with the certified values.Precision of the method was tested at asparagus sample for 6 determination,values of RSD′s found were in the range of 5.3%-9.6%.