Inductively coupled plasma mass spectrometry for determination of heavy metal elements in wheat
Using inductively coupled plasma mass spectrometry,this paper determines wheat in the lead,cad-mium,arsenic,chromium,copper,zinc,iron and manganese eight kinds of heavy metal elements. The samples with microwave digestion use nitric acid to dissolve and icp-ms digestion liquid for testing. With the accuracy of the method of standard addition recovery test is investigate. The results show that the measured element has a linear relation in standard solution concentration range;the correlation coefficient are greater than 0 . 9990 . Method detection limit is between 0. 010 25 ~4. 547 mg/kg,relative standard deviation less than 3. 89%. Standard addition recovery rate is between 90. 70% ~109. 9%. This method is fast and accurate,with low de-tection limit,high sensitivity. It applies to the determination of eight heavy metals in wheat.
wheatthe heavy metal elementinductively coupled plasma mass spectrometry
NETL
NSTL
万方数据
维普
