Characterization and structure analyses of the chelate products of chelate–assist phytoextraction in Pb contaminated soils

Abstract

我国是全球铅储量最大的六个国家之一,在蓄电池、电缆护套、铅合金、射线防护,铅基催化剂等行业中,铅都发挥着重要作用,但同时铅也是严重危害生物健康的重金属之一。环境中的铅大部分都在土壤之中,因此如何治理土壤中的铅污染成为一个人们广泛关注的问题。目前最具应用潜力的方法是用螯合剂与铅结合形成配合物以提高铅的溶解度使之能够被植物吸收,达到治理铅污染的目的。本文以氨基多羧酸类螯合剂:乙二胺四乙酸和1,3-丙二胺四乙酸;以及天然小分子有机酸类螯合剂:柠檬酸为配体,系统地研究了它们在不同条件下与铅的螯合产物。通过详细表征和相互比较考察了螯合产物的可溶性以及稳定性,以期从配位化学的角度来分析螯合剂对铅的不同配位...China is one of the six biggest lead reserves countries all over the world. Lead plays an important role in the battery, cable shield, alloy, X-ray sheath and catalyst industries. However, it is also a heavy metal which is harmful to human health. Most of lead in environment will transfer into the soil. Hence, it becomes a popular problem to treatment the soil lead pollution. At present, the most ...学位:理学硕士院系专业:化学化工学院_物理化学学号:2052014115156

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