防己中砷、汞、硒、镉的氢化物发生-原子荧光法测定

Hubei Agricultural Sciences(2014)

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Abstract
采用微波消解法处理防己(Radix stephaniae Tetrandrae)样品,然后用氢化物发生-原子荧光法测定防己中的砷、汞、硒和镉的含量.结果表明,加标回收率在96.9%~104.1%之间(n=5),相对标准偏差均小于3%,具有良好的精密度和准确度.各元素的检出限为0.03~0.19 ng/mL,能满足中药材中无机元素的测定要求.本法操作简便,灵敏度高,重复性好,适用于中药材中有害重金属含量的检测.
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