石墨炉原子吸收光谱法测定中药漏芦中微量镉的研究  

Study on Determination of Trace Cadmium in Chinese Medicine LouLu by Graphite Furnace Atomic Absorption Spectrometry

作　　者：丁健华[1] 廖振环[2] 王雷[2] 杨晓骏[2] 

机构地区：[1]佛山科学技术学院,佛山528000 [2]武汉大学化学与环境科学学院,武汉430072

出　　处：《光谱学与光谱分析》2001年第4期552-554,共3页Spectroscopy and Spectral Analysis

摘　　要：本文提出了石墨炉原子吸收光谱法 (GFAAS)测定中药漏芦中微量镉的方法。对基体改进剂及其用量进行了选择试验。对石墨炉工作条件进行了优化 ,对共存离子的影响进行了考察。在优化实验条件下 ,方法的检出限为 0 0 6ng·mL-1,精密度 (RSD)为 2 43% ,试样加入回收率为 97%～ 10 5 %。A method for the determination of trace cadmium in chinese medicine Loulu by graphite furnace atomic absorption spectrometry (GFAAS) has been described. The matrix modifier and its proper concentration, the influence factors including ashing and atomization temperature, atomization time and coexisting ions were investigated. Under the optimum experimental conditions, the detection limit and the relative standard deviation of the method were 0.06 ng(.)mL(-1) and 2.43% (n = 11), respectively. The recovery was between 97% and 105%. The method is simple, rapid and accurate, and can eliminate the matrix effect. It has been applied to the direct determination of trace cadmium in chinese medicine Loulu with satisfactory results.

关 键 词：GFAAS 漏芦 镉 中药 微量分析 原子吸收光谱法 

分 类 号：R284.1[医药卫生—中药学]