饲料中铜、锌、铅、砷、铬、镉的测定-电感耦合等离子体质谱法的建立与验证OA

To address the issues of scattered standards and outdated techniques in current feed multi-element detection,this study es-tablished an analytical method for simultaneous determination of copper(Cu),zinc(Zn),lead(Pb),arsenic(As),chromium(Cr),and cadmi-um(Cd)in feed using inductively coupled plasma mass spectrometry(ICP-MS).By optimizing sample pretreatment conditions and in-strument parameters,the method was systematically validated for linearity,detection limits,quantification limits,accuracy,and preci-sion,and applied to actual sample testing.The results showed that the method exhibited excellent linearity within a specific concen-tration range(correlation coefficient≥0.9997),with quantification limits of Cu 5 mg/kg,Zn 5 mg/kg,Pb 0.05 mg/kg,As 0.05 mg/kg,Cr 0.2 mg/kg,and Cd 0.05 mg/kg.The spiked recovery rate ranged from 83.8%to 107.6%,and the relative standard deviation(RSD)was 1.2%to 8.4%.This method is efficient,accurate,and reliable,meeting the requirements for feed quality and safety supervision and providing technical support for simultaneous multi-element detection in feed.