原子吸收光谱法测定中草药中微量元素

Determination of Trace Elementsin Chinese herbal medicine by Atomic Absorption Spectrometry

研究了微波消解法处理样品,用火焰原子吸收光谱法测定了金银花、黄柏、生地、蒲公英、连翘、板蓝根、车前草、决明子等清热解毒类中草药中的铜、锌、锰、钙、镁、铁6种微量元素。结果表明：清热解毒中草药中钙、镁、铁含量较为丰富,加标回收率为97.28%~101.4%,RSD为0.81%~1.73%。结果令人满意。

A new method for the determination of Cu, Zn, Mn, Ca, Mg and Fe in Chinese herbal drugs for relieving away heat and toxic including Honeysuckle, Cortex phellodendri, Born to, Dandelion, Forsythia suspensa, Radix isatidis, Plantain and Semen cassiae by the microwave digestion and atomic absorption spectrometry was studied. The results obtained show that the contents of Ca, Mg and Fe are abundant in Chinese herbal drugs for relieving away heat and toxic. The addition standard recoveries were 97.28 % -- 101.4 % and the relative standard deviations are 0.81% ～ 1.73 %. The results are satisfactory.