安徽省宿松县北部Cd元素地球化学分布特征

Geochemical Distribution Characteristics of Cd in Northern Susong County in Anhui Province

摘要:

Cd是动植物非必需的有害微量元素,严重的Cd污染将对人体健康构成极大危害。该次通过对安徽宿松县北部地区水系沉积物和土壤样品中Cd地球化学异常分布特征进行研究发现，Cd异常的形成分为自然来源和人为来源；区内分布的硅质岩为Cd异常自然源的主要源头；人类的生活活动虽对Cd异常的分布产生了一定的影响，但影响的范围和程度有限；而采矿活动对土壤和水系沉积物中Cd的含量影响明显，在采矿区及附近的样品中Cd含量远高于一般地区样品中的含量；从而形成了区内Cd异常的主要分布区。

Abstract:

Cd is a non essential trace element for animals and plants, and the serious pollution of Cd will do great harms to human health. Through study on geochemical anomaly distribution of Cd in stream sediments and soil samples in northern Susong county in Anhui province, it is found that natural and anthropogenic source are two ways for the formation of Cd anomaly. In our work area, the distribution of siliceous rocks is the natural source of Cd anomaly, although human activity has a certain effect on the distribution of Cd anomaly, the scope and the impact intent are limited. However, the content of Cd in soil and stream sediment is significantly affected by mining activities. The content of Cd in mining area and nearby samples is much higher than that in general areas, thus main distribution area of Cd anomaly has been formed.