Determination of 24 Metal Elements in Pleurotus eryngii Quei by Inductively Coupled Plasma Mass Spectrometry with Microwave Digestion for Sample Preparation
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Abstract:
A method was established to determination of 24 metal elements in Pleurotus eryngii Quei. After microwave digestion, the samples were determined directly by inductively coupled plasma mass spectrometry which used Sc, Ge, Y, In, Tb, Bi as internal standard to correct matrix interference and signal drifting. The quality of the results was proved by the recovery experiments (ranging from 90.1% to 118.9%). The linear correlative coefficient for all elements was higher than 0.999. The relative standard deviations varied from 0.6% to 5.6% (n = 11). The proposed method is fast, simple, sensitive and accurate, which can meet the demand for determining 24 metal elements in Pleurotus eryngii Quei.
