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建立了微波消解-电感耦合等离子体质谱(ICP-MS)法测定人面果树中As,Cr,Cd,Pb,Ni,Se,Hg 7种重金属元素含量的方法。样品采用HNO3-H2O2消解体系,避免了赶酸的操作,经微波消解后,用电感耦合等离子体质谱(ICP-MS)测定样品中As,Cr,Cd,Pb,Ni,Se,Hg 7种重金属元素的含量。方法对7种元素的校准曲线的相关系数r>0.9997,检出限在0.0098～0.0874μg/L之间,回收率在93%～115%之间,RSD在0.41%～4.9%。
A method for the determination of seven heavy metal elements (As, Cr, Cd, Pb, Ni, Se and Hg) in human face tree by microwave digestion and inductively coupled plasma mass spectrometry (ICP-MS) Samples were treated with HNO3-H2O2 digestion system to avoid the catch-up operation. After microwave digestion, seven samples of As, Cr, Cd, Pb, Ni, Se and Hg were determined by inductively coupled plasma mass spectrometry (ICP- Heavy metal elements content. The correlation coefficients of the calibration curves for the seven elements were> 0.9997. The detection limits were between 0.0098 and 0.0874 μg / L. The recoveries ranged from 93% to 115% and RSD ranged from 0.41% to 4.9%.