安徽钟山铁矿植物重元素X射线荧光研究及环境指示意义

利用同步辐射X射线荧光分析技术，对安徽省钟山铁矿矿区的8种植物叶片内重元素进行了研究。这些植物是：蕨（Pteridium aquilinum var.latiusculum）、虎杖（Polygonum cuspidatum）、酸模（Rumex acetosa）、南苜蓿（Medicago hispida）、紫花地丁（Viola yedoensis）、泽兰（Eupatorium ja-ponicum）、一年蓬（Erigeron annuus）和蒲公英（Taraxacum mongolicum）。研究结果发现，Fe含量最高的是泽兰，最低的是蒲公英，从高到低的排列为：泽兰＞酸模＞南苜蓿＞虎杖＞蕨＞紫花地丁＞一年蓬＞蒲公英。酸模幼叶中K的含量和Fe的含量分别是功能叶的7倍和1.5倍。南苜蓿的Fe元素含量，铁矿区是非矿区的5倍。蒲公英的Fe元素含量，铁矿区是非矿区的近7倍。

Studying and significance of instructing environment about heavy elements of plants by XRF in Zhongshan iron mine, Anhui Province

By means of SR X-ray fluorescence, we have studied the heavy elements in leaves for 8 species of plants in Zhongshan mine, Anhui province. These plants are Pteridium aquilinum var. latiusculum, Polygonum cuspidatum, Rumex acetosa, Medicago hispida, Viola yedoensis, Eupatorium japonicum, Erigeron annuus and Taraxacum mongolicum . The results of experiments are that the content of Fe element in Eupatorium japonicum is the highest, and the lowest one is in Taraxacum mongolicum . The sequence of the abundance of Fe element from high to low is Eupatorium japonicum, Rumex acetosa, Medicago hispida, Polygonum cuspidatum, Pteridium aquilinum var. latiusculum, Viola yedoensis, Erigeron annuus and Taraxacum mongolicum . The content of K element in young leaf of Rumex acetosa is about 7 times, and the one of Fe element is 1.5 times, respectively, as high as that in functional leaf. The contents of Fe element of Medicago hispida and Taraxacum mongolicum in iron mine region are 5 times and about 7 times, respectively, as high as that in non-mine region.