微波消解-石墨炉原子吸收法测定中药材中的铅

Microwave digestion-graphite furnace atomic absorption method for the determination of lead in Chinese herbal medicines

目的建立微波消解-石墨炉原子吸收光谱法测定中药材中铅的方法。方法用微波消解对常用的几种中药材进行前处理,用石墨炉原子吸收光谱法测定其中铅。结果 RSD在1.5%-3.2%之间,加标回收率在98.4%-102.4%之间。结论该法准确度、精密度良好,灵敏度高,是高效、快速、实用的测定中药材中铅的方法。

Objective To establish a microwave digestion and graphite furnace atomic absorption spectrometric determination of lead in medicinal method. Methods Using microwave digestion of several commonly used Chinese herbal medicines with pretreatment, graphite furnace atomic absorption spectrometric method for the determination of lead. Results With RSD1.5 %-3.2 % in between, the recovery rate was98.4 %-102.4 %. Conclusion The method is accurate, with excellent accuracy, high sensitivity, fast, efficient, is practi- cal in determination of lead in medicinal method.