荧光光谱法测定中成药中微量铅  

Fluorimetric method for determination of trace lead in traditional Chinese medicine

作　　者：王树玲[1] 吴晓东[1] 于俊生[1] 陈德芳[1] 

机构地区：[1]南京大学化学系,南京210093

出　　处：《分析试验室》2003年第4期29-32,共4页Chinese Journal of Analysis Laboratory

基　　金：南京大学985学科发展项目资助

摘　　要：基于二价铅离子在浓盐酸体系中所形成的PbCl42-配合物在紫外光的照射下发出蓝色荧光的原理,提出了一种测定中成药品中的微量铅的灵敏的荧光分析法。体系的荧光强度与Pb(Ⅱ)的质量浓度在0.02～2.00μg/mL范围内有良好的线性关系,检测下限为8.7×10-3μg/mL。用本法测定了中成药丸及原料药粉中的铅含量,回收率分别介于92 0%～107%和94%～101%之间。Pb(Ⅱ) in concentrated HCl solution formed PbCl2-4 and showed fluorescence at 480 nm after being excitated by UV. Based on this, a spectrofluorimetric method for determination of lead in traditional Chinese medicine was established. The linear range for the determination of lead was 0.02～2.00 μg/mL with detection limit of 8.7×10-3 μg/mL. The method was applied to the determination of trace lead in traditional Chinese medicine with satisfactory results.

关 键 词：荧光光谱法 测定 中成药 微量元素 铅 

分 类 号：R284.1[医药卫生—中药学]