文献类型：期刊文献

中文题名：原子荧光法测茶叶中重金属铅残留方法研究

英文题名：Determination of Lead in Tea by Atomic Fluorescence Spectrometry

作者：邓大跃[1];吴丽萍[1];李楠[1];张萌[1]

第一作者：邓大跃

机构：[1]北京联合大学应用文理学院

第一机构：北京联合大学应用文理学院

年份：2012

卷号：40

期号：4

起止页码：84-86

中文期刊名：河南师范大学学报：自然科学版

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD_E2011_2012】；

基金：北京市高等学校人才强教深化计划创新团队(PHR201107150)

语种：中文

中文关键词：原子荧光分析法;茶叶;铅;氢化物发生

外文关键词：atomic fluorescence spectrometry ; teas leads hydride generation

摘要：建立了原子荧光光谱法测定茶叶中痕量铅的分析方法.研究氢化物发生体系各试剂对荧光强度的影响,确定最佳的试剂浓度和实验条件.铅在0～10.0ng.mL-1范围内荧光与浓度线性关系良好,线性回归方程为:If=318.13C+22.28.实际样品测定精密度4.7%,回收率为97%～101%;绿茶、普洱茶、球茶铅残留量测定结果分别为:1.41、1.61、1.68mg.kg-1.该分析方法操作简单,灵敏度高,适于样品的批量快速分析.
A new method for analyzing the trace lead in tea by the Atomic fluorescence spectrometry was developed. The reagents on the fluorescence intensity in the hydride generation system was studied, and it was identified that the optimal con- centrations of reagents and experimental conditions. The fluorescence intensity of them had good linear relationship with their concentrations in the range of 0--10. 0 ng·mL-1 , linear regression equation was If=318.13 C＋22.28. Determination of actual samples, the RSD was 4.7 %, the recoveries were between 97 %- 101%. The results of lead in Green tea, Pu＇er tea and ball tea were 1.41, 1.61 and 1.68 mg·kg-1 respectively. This method is simple, hishly-sensitive and suitable for the rapid analysis of a large number of samples.