流动注射在线预分离富集-火焰原子吸收光谱法测定中成药中的痕量镉  

THE DETERMINATION OF TRACE AMOUNTS OF CADMIUM IN TRADITIONAL CHINESE MEDICINES BY FLOW INJECTION-FLAME ATOMIC ABSORPTION SPECTROMETRY

作　　者：邵泽生[1] 王新省[2] 宋洋[2] 李倩[3] 

机构地区：[1]天津医科大学继续教育学院,天津300070 [2]南开大学化学院,天津300071 [3]南开大学医院,天津300071

出　　处：《离子交换与吸附》2010年第2期174-178,共5页Ion Exchange and Adsorption

基　　金：环保检测基金

摘　　要：应用D-411鳌合树脂作在线分离预富集柱填料,流动注射与原子吸收光谱联用测定中成药中的痕量镉。采样频率28次/h,富集倍数达46倍,线性范围0～0.020mg/L,该方法的检出限(3S,n=10)0.0285μg/L,相对标准偏差5.2%。将该方法用于中成药样品中镉的测定,结果满意。Trace amounts of cadmium in traditional Chinese medicines have been determinated by flow injection-flame atomic absorption spectrometry on a microcolum packed with D-411 chelating resin. The concentration factor is 46 when sampling frequency is 28 times per hour. The linear range is 0～0.020mg/L and RSD is 5.2%. Satisfactory results could be obtained in the determination of trace amounts of cadmium in traditional Chinese medicines.

关 键 词：D-411鳌合树脂 流动注射 原子吸收光谱 预分离富集 镉 

分 类 号：O652.6[理学—分析化学]