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采用干法灰化法处理样品后,应用火焰原子吸收光谱法对抗肿瘤中药白花蛇舌草(Hedyotis diffusa Willd.)不同部位中金属元素Ca、Cd、Co、Mg、Fe、Mn、Zn、Pb进行了测定。结果表明,白花蛇舌草不同部位中Ca、Mg、Fe、Mn、Zn的含量都较丰富,且金属元素的含量高低顺序均为:Ca>Mg>Fe>Mn>Zn;Cd、Co、Pb未检出。方法的加标回收率96.8%～104.4%,相对标准偏差(RSD)(n=5)1.0%～4.2%。测定方法简便,可用于实际样品的测定。
After the samples were treated by dry ashing method, the metal elements Ca, Cd, Co, Mg, Fe, Mn, Zn, Pb in different parts of Hedyotis diffusa Willd. Were determined by flame atomic absorption spectrometry The determination. The results showed that the contents of Ca, Mg, Fe, Mn and Zn in different parts of Hedyotis diffusa were rich, and the contents of Ca, Mg, Fe and Mn were all in the order of Ca, Mg, Fe, Mn, not detected. The recoveries of the method were 96.8% -104.4% with relative standard deviations (RSDs) of 1.0% -4.2% (n = 5). Determination method is simple, can be used for the determination of the actual sample.