太原市小店区污灌土壤重金属形态分布特征  

Distribution Characteristics of Speciation of Heavy Metals in Sewage Irrigation Soil in Xiaodian District,Taiyuan

作　　者：方玲[1] 

机构地区：[1]山西省科学技术情报研究所,山西太原030001

出　　处：《山西农业科学》2014年第6期592-598,共7页Journal of Shanxi Agricultural Sciences

摘　　要：在太原小店污灌区,采用田间试验,系统研究了污灌土壤中不同形态重金属Pb,Cr,Cd的含量和在1 m土壤中的垂直分布规律,以及玉米、小麦和大豆对Pb,Cr,Cd的吸收分布特性。结果表明,试验区土壤中全量Pb,Cr,Cb含量均为太原市环境背景值的2-5倍;Tessier法浸提态Pb,Cr,Cb含量均随土壤深度增加而逐渐减少,种植玉米、小麦和大豆对其分布规律没有影响;污灌土壤中Pb和Cr以残渣态为主,Cd以有机物结合态和铁锰氧化物结合态为主。With the combination methods of field experiment and laboratory analysis.The field experiment located in sewage irrigation area in Xiaodian district, Taiyuan,Shanxi province, was conducted to study systematically the content and vertical distribution feature of different form Pb, Cr and Cd in 1 m soil layer. The results are： The content of total Pb, Cr and Cb was about 2 to 5 times the environmental background value in Taiyuan. The content of Tessier extractable Pb, Cr and Cb gradually decreased with increasing soil depth. The cultivated corn, wheat and soybeans had no effects on heavy meatal distribution.In sewage irrigated, the most speciation of soil Pb was residual form.The most speciation of soil Cr was also residual form. The bound to organic matter Cd and bound Fe-Mn oxide Cd.

关 键 词：小店区 污灌土壤 重金属 分布特征 

分 类 号：X131.3[环境科学与工程—环境科学]