Determination of trace elements in breadfruit by ICP-MS

Samples of breadfruit were digested by microwave digestion,and trace elements amounts of Na,Mg,P,Ca,Cr,Mn,Fe,Co,Ni,Cu,Zn,As,Se and Pb in sample solutions were determined by inductively coupled plasma mass spectrometry(ICP-MS).Sample preparation was achieved by digestion with HNO 3 + H 2 O 2 in a closed vessel microwave system.The pretreatment of sample and the mass spectrometry interferences were studied.Rh as internal standard element was used to compensate matrix effect and signal drift.Under the optimal conditions,the detection limits of the 14 elements were in the range of 0.006 ~ 0.251μg /L.The recovery was 90.60% ~ 109.20% by adding standard recovery experiment,and the relative standard deviation(RSD) was less than 3.82% for all the elements.This method was simple,sensitive and precise,which could satisfy the sample examination request and provide scientific rationale for determining t elements of breadfruit.