采用L-半胱氨酸做预还原剂,建立了氢化物发生原子荧光光谱法测定丹参中砷、锑含量的方法.研究了酸度、硼氢化钾浓度、L-半胱氨酸浓度等条件对原子荧光强度的影响.结果表明,在最佳工作条件下,砷、锑检出限分别为0.09μg/L和0.03μg/L;在取样量为1.000g时,砷、锑的检出限分别为1.13 ng/g和0.38ng/g.本方法操作简单、灵敏度高、分析速度快,适用于植物药材及其制剂中痕量砷、锑含量的检测.
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