| 顺序注射氢化物发生-原子荧光光谱法同时测定中药材中砷和镉 |
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| 引用本文： | 徐文军,王立斌,孔祥雪.顺序注射氢化物发生-原子荧光光谱法同时测定中药材中砷和镉[J].药物分析杂志,2011(4). |
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| 作者姓名： | 徐文军 王立斌 孔祥雪 |
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| 作者单位： | 临沂大学化学与资源环境学院山东省高等学校资源与环境分析化学重点实验室; |
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| 摘 要： | 目的:建立一种以顺序注射氢化物发生-原子荧光光谱法同时测定中药材中砷和镉含量的方法。方法:通过考察光电倍增管负高压、砷和镉灯电流、原子化器高度、载气流量、屏蔽气流量、增敏剂等因素对测定结果的的影响。在载流盐酸的浓度为0.6 mol·L-1,KBH4浓度为20 g.L-1,增敏剂硫脲和钴离子的浓度分别为80 g.L-1和70 mg.L-1时,同时测定砷和镉的效果最佳。结果:在最佳实验条件下,砷和镉的检出限分别为0.014μg.L-1和0.18μg.L-1,加标回收率为92.9%～103.5%,相对标准偏差小于3.2%,被测试样中共存的离子对砷和镉的测定没有干扰。结论:本方法操作方便、快速,用于中药材中砷和镉的同时测定,具有很好的可行性和实用性。
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| 关 键 词： | 顺序注射 氢化物发生 原子荧光光谱法 砷 镉 |
Determination of arsenic and cadmium in Chinese herbal medicine by the sequential injection hydride generation atom fluorescence spectrometry |
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| XU Wen-jun,WANG Li-bin,KONG Xiang-xue.Determination of arsenic and cadmium in Chinese herbal medicine by the sequential injection hydride generation atom fluorescence spectrometry[J].Chinese Journal of Pharmaceutical Analysis,2011(4). |
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| Authors: | XU Wen-jun WANG Li-bin KONG Xiang-xue |
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| Institution: | XU Wen-jun,WANG Li-bin,KONG Xiang-xue(School of Chemistry and Resource Environment,Linyi University,Key Laboratory of Resources and Environmental Analytical Chemistry Shandong Province Higher School,Linyi 276005) |
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| Abstract: | Objective: Method for simultaneous determination of arsenic and cadmium in Chinese herbal medicine by sequential injection hydride generation-atomic fluorescence spectrometry was established.Methods: The influence of instrument parameters such as the negative high voltage on the photomultiplier,current of lamp,carrier gas rate,shield gas rate,sensitizer on the determination of arsenic and cadmium were studied,the research has discovered when the concentration of hydrochloric acid and potassium borohydride w... |
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| Keywords: | sequential injection hydride generation atomic fluorescence spectrometry arsenic cadmium |
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