The Element Determination of Four Samples of Vegetables by Using XRF Spectrometry

利用X射线荧光光谱法对大叶蒲公英、空心菜、紫薯叶、红薯芽苗四种蔬菜植物的粉末样品中元素的种类和含量进行测定，并对样品的测定结果进行比较分析。结果表明，四种植物的样品粉末中元素含量丰富；除含有常量元素外，还含有如铁、钴、锰、硅、硒等多种微量元素，但各个样品中的微量元素的种类及含量有所差异；大叶蒲公英的叶中钾、钙元素含量是所有样品中最多的。 Elements and contents in four samples of vegetables of grandifoliate dandelion and spinach, purple sweet potato leaves, sweet potato sprout were determined by using XRF technic, and the data in every group were compared and analysed. The results indicated that all vegetables contain abundant elements. Besides major elements, they also contain multiple kinds of trace elements such as Fe, Co, Mn, Si, Sr, Sn. But the type and content of each trace element vary in the samples of different vegetables. Grandifoliate dandelion contains most K and Ca among all the samples.