用矿物学方法评价浙江土壤中Cd污染的状况  

A mineralogical method for evaluating Cd pollution in soils of Zhejiang Province,China.

作　　者：郑喜珅[1] 鲁安怀[1] 汪庆华 郑佳[1] 朱朝晖 于芳[1] 

机构地区：[1]北京大学地球与空间科学学院 [2]浙江省地质调查研究院,浙江杭州311203

出　　处：《地质通报》2007年第5期598-604,共7页Geological Bulletin of China

基　　金：浙江省农业地质环境调查项目(编号:20021010)资助

摘　　要：利用土壤中重金属环境质量矿物学评价的方法,对浙江省土壤中不同土类(或亚类)表层、不同母质表层和剖面上的Cd元素进行了环境质量评价。评价结果表明,土壤中Cd的实测含量和土壤对Cd的固持量决定了土壤中Cd的环境质量,浙江省土壤中Cd的污染度均为负值,土壤中Cd均没有达到产生污染危害的含量水平,土壤对Cd的固持量较高。研究结果揭示,土壤中的矿物对Cd具有较强的固定与容纳能力,土壤中的Cd不易进入食物链,也不会对地表水和地下水水体造成污染。这一旨在揭示土壤中重金属与各种矿物之间环境平衡关系的方法,可为评价土壤环境质量提供科学依据和技术支撑。The authors used the mineralogical method to evaluate the Cd environmental quality of the surface layer of different soil types /subtypes and surface layer and sections of different parent materials in Zhejiang Province. The evaluation indicates that- the Cd environmental quality of soils is determined by the Cd content in soils and content of Cd adsorbed by soils; the degree of Cd pollution has a negative value, the content of Cd in soils does not reach the degree of pollution, and the retention capacity of Cd in soils of Zhejiang is high. Analysis reveals that minerals in soils have a relatively strong capacity of fixation and retention of the dement Cd. Cd in soils is not easy to enter into the food chain and pollute surface water and groundwater. This method that aims to reveal the environment balance between heavy metals and various minerals in soils can offer a scientific basis and technologic support for evaluating the soil environment quality.

关 键 词：CD 土壤矿物 重金属 评价方法 环境质量 浙江 

分 类 号：S153.61[农业科学—土壤学]