ICP-OES与ICP-MS测定人体汗液的5种微量重金属元素

Determination of five heavy trace metal elements in human sweat by ICP- OES and ICP- MS

采用不同的样品消化方法和电感耦合等离子体发射光谱法（ICP-OES）与质谱法（ICP-MS）,尝试建立适合的测定汗液中铬（ Cr）、铜（ Cu）、锌（ Zn）、镉（ Cd）和铅（ Pb）五种微量重金属元素的方法。结果显示,湿法消解-ICP-MS法检测汗液中这五种微量金属元素的相对偏差（ RSD）为0．3%～9．4%,ICP-MS的加标回收率为92．8%～118．6%。相较其他方法,该法能快速精确地同时检测出汗液中多种微量重金属元素。

In this study, different digestion methods were used to prepare samples for determination of five heavy trace metal elements （ Cr, Cu, Zn, Cd and Pb） in human sweat by inductively coupled plasma optical emission spectrometry （ ICP -OES ） and inductively coupled plasma mass spectrometry （ ICP -MS ） . We found that the HNO3 -HClO4 wet digestion method combining with ICP-MS is more accurate to determine these five heavy trace metal elements because their relative standard deviations （RSDs） were 0. 3% ～9. 4%and the recovery rates of ICP-MS were 92. 8% ～118. 6%. It is concluded that, comparing with other com-binations, HNO3 -HClO4 wet digestion-ICP-MS is the fast and accurate method for determining the heavy metal elements in human sweat.