摘要
罗汉果样品经加HNO3后利用微波消解进行前处理,采用电感耦合等离子体质谱法(ICP-MS)直接测定试液中的Pb和As,并对ICP-MS工作参数进行了优化和选择。为校正响应信号的变化及消除基体效应和仪器漂移的影响,仪器分析过程中选用Rh做内标溶液。方法测定Pb和As具有良好的线性关系,检出限低(<0.05μg/g),并且标准加入回收率在95%～105%之间。
The Siraitia Grosvenorii samples were digested with HNO3 by microwave technology,and the sample solutions were determined by Inductively Coupled Plasma Mass Spectrometry（ICP-MS） directly.In order to get rid of the matrix effect and instrument drift effectively,Rh solution was selected as internal standard solution during the analysis process.This method held well linear relationship.The detection limit was less than 0.05 μg/g and the recovery was between 95%~105%.
出处
《广州化工》
CAS
2012年第20期87-88,131,共3页
GuangZhou Chemical Industry
基金
国土资源部地质大调查项目-西南地区岩溶地下水污染调查评价(1212011121164)
关键词
微波消解
电感耦合等离子体质谱(ICP-MS)
罗汉果
铅
砷
Microwave Digestion
Inductively Coupled Plasma Mass Spectrometry（ICP-MS）
Siraitia Grosvenorii
Pb
As
