| 原子荧光法测茶叶中重金属铅残留方法研究 |
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| 引用本文： | 邓大跃,吴丽萍,李楠,张萌.原子荧光法测茶叶中重金属铅残留方法研究[J].河南师范大学学报(自然科学版),2012,40(4):84-86. |
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| 作者姓名： | 邓大跃 吴丽萍 李楠 张萌 |
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| 作者单位： | 北京联合大学应用文理学院,北京,100191 |
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| 基金项目： | 北京市高等学校人才强教深化计划创新团队项目 |
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| 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.
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| 关 键 词： | 原子荧光分析法 茶叶 铅 氢化物发生 |
Determination of Lead in Tea by Atomic Fluorescence Spectrometry |
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| DENG Da-yue
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WU Li-ping
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LI Nan
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ZHANG Meng.Determination of Lead in Tea by Atomic Fluorescence Spectrometry[J].Journal of Henan Normal University(Natural Science),2012,40(4):84-86. |
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| Authors: | DENG Da-yue WU Li-ping LI Nan ZHANG Meng |
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| Institution: | (College of Arts and Sciences of Beijing Union University,Beijing 100191,China) |
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| Abstract: | 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 concentrations 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. |
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| Keywords: | atomic fluorescence spectrometry tea lead hydride generation |
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