降水引起的地表径流中汞来源的研究  

Mercury Origin in Surface Runoff Caused by Precipitation

作　　者：王文华[1] 刘俊华[1] 彭安[2] 

机构地区：[1]上海交通大学环境学院,上海200240 [2]中国科学院生态环境研究中心环境水化学国家重点实验室,北京100085

出　　处：《农业环境保护》2001年第5期297-301,共5页Agro-Environmental Protection

基　　金：中国科学院重点基金资助K952-j1-205

摘　　要：收集了北京市西北郊玉米地块的夏季降水和地表径流水样,对样品中各形态的汞和理化性质进行了测定。结果表明,地表径流中的汞含量大于降水中汞的含量,用典型相关分析确定了地表径流中的汞来源及其影响因素。降水产生的地表径流与土壤接触后发生反应,可溶解土壤中的汞向水体中输送,地表径流的性质影响地表径流中汞的形态。估算出地表径流每年汞输出率约为18.24μg·m-2。Rain samples and runoff water samples were collected in summer 1998 from cornfield in Northwest of Beijing. The kind of mercury and physical, chemical properties of the samples were determined and evaluated. The origin of mercury in runoff water was analyzed by a statistics method. It has been discovered that the mercury contents in runoff water samples were more than that in rain samples and this may be explained by that the runoff water can react with soil and may dissolve some mercury into water body. It is also concluded that the properties of runoff water can affect nature of mercury in runoff water, while the outlet rate of mercury by runoff water was found to be 18.24 μg·m-2.

关 键 词：汞 降雨 地表径流 北京 污染源 水体污染 

分 类 号：X522[环境科学与工程—环境工程]