Determination of 42 Trace Elements in Seawater by Inductively Coupled Plasma Mass Spectrometry After APDC Chelate Co-precipitation Combined With Iron

摘要

A method was developed for seawater analysis by inductively coupled plasma-mass spectrometry.To a seawater sample with 1 mg Fe,2 ml 1% ammonium pyrrolidinedithiocarbamate was added at pH 2 or pH 4 for coprecipitation of Co,Ni,Cu,Nb,Mo,Cd,Sn,In,Te,and Pb or Be,Sc,Ti,Cr,V,Co,Ni,Cu,Zn,Ga,Ge,As,Zr,Nb,Sn,In,Te,rare earth elements,Hf,Ta,W,Tl,Pb,Bi,and Th.The procedural recovery and reproducibility are ~96% and ~4.4%,respectively.This method was validated with seawater references,and the results were consistent with their certified values.