Simultaneous Determination of 6 Heavy Meta Elements in Herbal Tea by ICP-MS with Microwave Digestion
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Abstract:
A method for the simultaneous determination of As,Pb,Cu, Zn, Fe and Sn in herbal tea by ICP-MS with microwave digestion was studied. The herbal tea sample was digested in microwave system and the elements were determined by ICP-MS under optimum conditions. The linear range of the calibration curve was 0~100.0 μg/L with a correlation coefficient of 0.9999. The detection limits were in the range of 9~55 ng/L. Recoveries of the elements from the spiked herbal tea sample were of 93%-106%, and the RSD was less than 2.1%. The proposed method was easy to perform.
