摘要
通过采用硝酸过氧化氢过夜浸提改进胶母糖样品中测定铅的前处理方法,基体干扰少,三水平加标回收率在95.2%～110.3%,8次重复测定的变异系数为1.8%,与国家标准方法比较,采用t检验法分析,结果无显著性差异.
The lead determination in chewing gum was improved by ameliorating sample prepation by using HNO3-H2O2 lixiviation solution with less matrix interference.The standard recovery of determination is 95.2%～110.3% fortified at three levels.The coefficient of variation is 1.8%（n=8）.Aanlyzed by using t-test method,the result obtained by the improved method has no significant difference with that of national standard method.
出处
《北京工商大学学报（自然科学版）》
CAS
2012年第5期67-69,共3页
Journal of Beijing Technology and Business University:Natural Science Edition
关键词
胶母糖
铅
测定方法
浸提
chewing gum
lead
measuring method
lixiviation
