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应用等离子光谱仪分析了３１种甘肃道地植物药微量元素的含量。证明这些道地植物药的药效与所含微量元素有着密切的相关性，而且这些微量元素含量除有种属的区别外，还与植物生长的环境有关。同时还发现有些植物药中某些微量元素含量高。
The content of trace elements in 31 kinds of gansu herbal medicines was analyzed by plasma spectroscopy. It is proved that the medicinal effects of these authentic botanical drugs are closely related to the trace elements contained in them. Besides the difference in species, these trace elements are also related to the environment in which the plants grow. At the same time, it was also found that some plant drugs contained high levels of certain trace elements.