Determination of Thirteen Elements in Sargassum Fusiforme by Microwave Digestion and ICP-MS and its Health Risk Assessment

In this paper,the method for the determination of Al,As,Ba,Cd,Co,Cr,Cu,Fe,Mn,Ni,Pb,Mg and Zn in Sargassum Fusiforme by microwave digestion and inductively coupled plasma mass spectrometry(ICP-MP) was developed.Microwave digestion conditions and operational conditions of ICP-MS were optimized.Sc,Ge,In,Bi as internal standard elements were used to compensate matrix effect.Under the optimal conditions,the detection limits of the thirteen-elements are in the ranges of 0.004 to 1.90 μg/L with the RSD of 1.04%~3.65% and recoveries of 91.92%~109.36%.The results of certified reference were in good agreement with the certified value.The method was simple,fast and accurate,and suitable for daily inspection of Sargassum fusiforme,and it was important significance for quality control of culturing and processing industry of sargassum fusiforme.The risk index showed that heavy metal pollution in sargassum fusiforme was relative low and there was no significant risk for the populations exposed.