【摘要】 目的　研究从九个不同产地采集的中药商陆中Be ,Cd ,Ce,Cr,Cu ,Dy ,Er,Eu ,Gd ,Ge ,Ho ,La,Lu ,Mo ,Nd ,Pb ,Pr,Sm ,Sr,Tb ,Tl,Tm ,Y ,Yb ,Zn等 2 5种无机元素的分布规律。方法　采用湿法消化处理样品 ,在优化条件下用电感耦合等离子体质谱 (ICP MS)法同时测定 2 5种元素。结果　ICP MS测定商陆中 2 5种元素的检出限为 0 0 0 3～ 0 .71ng·mL- 1 ,回收率为 88%～ 1 1 9%。相对标准差为 1 7%～ 1 3 3%。结论　商陆样品中的元素浓度随产地不同而存在明显差异 ;但不同产地的商陆中元素的归一化浓度呈非常类似的波浪式分布 ,商陆可能按照一定比例吸收元素 ,如果其他中草药也存在类似规律 ,则有可能为研究中草药的元素指纹图谱奠定基础。更多还原

【Abstract】 Aim To study the distribution of 25 elements, i.e. Be, Cd, Ce, Cr, Cu, Dy, Er, Eu, Gd, Ge, Ho, La, Lu, Mo, Nd, Pb, Pr, Sm, Sr, Tb, Tl, Tm, Y, Yb and Zn in Phytolacca, a traditional Chinese medicinal herb, collected from nine areas of P.R. China. Methods Twenty-five elements in Phytolacca including essential elements, toxic elements and rare earth elements in traditional Chinese medicinal herbs from different areas were analyzed by ICP-MS. ResultsThe 25 elements in Phytolacca were determined by ICP-MS under optimized conditions. The detection limits were 0.003-0.71 ng·mL -1. The recoveries were 88%-118%. The relative standard deviations of the measurements were 1.7%-13.3%. Conclusion The determined concentrations of elements in Phytolacca acinosa Roxb vary from one area to another; however, the distribution tendency of elements in all the samples is similar. The distribution tendency of rare earth elements in Phytolacca acinosa Roxb is consistent with that in nature.更多还原