J4 ›› 2016, Vol. 15 ›› Issue (2): 10-14.
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A microwave digestion ICP- MS method was proposed and validated for the simultaneous determination of 13 trace elements(43Ca, 24Mg, 66Zn, 56Fe, 63Cu, 55Mn, 75As, 72Ge, 201Hg, 208Pb, 52Cr, 72Ge and 95Mo)in the chestnut-shell produced at 11 different places in Yunnan. The linear range of the calibration curve was 0-0.2 μg/mL with good correlation coefficient(r≥0.999 3). The detection limit was in the range of 0.12-48.5 ng/L. The quantitation limit was in the range of 3.18×10-5 -1.35×10-2 μg/g. Recoveries of the elements from the chestnut-shell were in the range of 88.9%-107.5%, and the RSD was less than 6.0%. The results showed that the highest contents were 43Ca and 24Mg, and the contents of other trace elements were in the order of 55Mn, 56Fe, 66Zn, 63Cu, 52Cr, 72Ge and 95Mo. The contents of heavy metals in chestnut shell were different in different places. The contents of 75As and 208Pb from 11 different habitats were in accordance with the standard, and the contents of 111Cd and 201Hg at some habitats were not conformed to the standards. The method is fast, accurate, reliable, with high sensitivity and multi elements analysis, which could be applied for the determination of trace elements in chestnut shell.
Key words: inductively coupled plasma mass spectrometry(ICP-MS), chestnut-shell, trace element
CLC Number:
O675.31
Su Lina, Yang Benshou, Pu Yaqing. Determination of the Trace Elements in Chestnut-Shell by Microwave Digestion ICP-MS[J]. J4, 2016, 15(2): 10-14.
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