现代科学仪器Issue(6)：157-161,5.
固体进样原子荧光用于测量农产品中的镉
Solid Sampling Atomic Fluorescence Spectrometry for Cadmium Determination in Agricultural Products
摘要
Abstract
A new solid sampling Atomic Fluorescence Spectrometry was applied in determination of cadmium in agricultural products,it included a porous graphite tube(PGT) as the vaporizer and a tungsten-coil(TC) as the cadmium trap.A method for cadmium measuring in agricultural products was developed by matrix interference elimination,calibration strategy and real sample analysis,respectively.The advantage of this method was pretreatment free,which could reduce the whole analysis time to less than 5 minutes.The detection limit(DL) of this method was 30 ng L-1(0.3 pg);the relative standard deviation(RSD) was less than 5% and no significant interference was found within a 10% error range.The recoveries for some certified reference materials was good,and the spiked recoveries for some agricultural products were between 90%~105%.Furthermore,this method was compared with ICPMS,GFAAS and PDV,and no significant difference was found between them.In conclusion,the methods for detecting cadmium are quick,simple and sensitive,and can meet the requirements of detection in agricultural products.关键词
镉/固体进样/原子荧光Key words
Cadmium/Solid Sampling/Atomic Fluorescence Spectrometry分类
机械制造引用本文复制引用
张晓红,冯礼,路东,郑逢喜..固体进样原子荧光用于测量农产品中的镉[J].现代科学仪器,2012,(6):157-161,5.基金项目
国家重大科学仪器设备开发专项”项目“用于现场、快速、准确测定的原子光谱分析系统”资金 （）
