"江西省典型水稻土对铜的吸附解吸特性研究  

A Study on Adsorption and Desorption of Copper in Typical Paddy Soils in Jiangxi Province

作　　者：常娟[1] 白玲[1] 冷婧[1] 汪小强[1] 

机构地区：[1]江西农业大学理学院,江西南昌330045

出　　处：《江西农业大学学报》2016年第1期207-214,共8页Acta Agriculturae Universitatis Jiangxiensis

基　　金：江西省教育厅科技研究项目(No.GJJ14289);江西省环境保护科研项目(No.JXHBKJ2013-4);江西省普通本科高校中青年教师发展计划访问学者专项资金(赣教高函[2014]15号)~~

摘　　要：以江西省2种典型水稻土(潜育型、潴育型)为试材,采用振荡平衡法研究了铜在水稻土中的吸附-解吸行为,并利用保留因子对铜在水稻土中的环境风险进行了评估。结果表明:潴育型水稻土的吸附能力较强,明显大于潜育型水稻土,但潴育型水稻土的解吸能力小于潜育型水稻土;2种水稻土对铜的吸附均可用Langmuir方程及Freundlich方程较好的拟合;铜的环境风险随铜含量的升高而增大,且潜育型水稻土大于潴育型水稻土。Two types of typical paddy soil（ gley type,waterloggogenic type） in Jiangxi Province were chosen as the test material,using batch equilibrium method the adsorption- desorption behavior of copper in the paddy soil was studied,and using the retention factor in the environmental risk of copper in paddy soil was evaluated.The results showed that the adsorption ability of waterloggogenic paddy was significantly higher than that of gley type paddy soil; but the desorption capacity of waterloggogenic paddy soil was lower than that of gley type paddy soil; the adsorption of copper by the two types of paddy soil can be fitted well by Langmuir equation and freundlich equation; the environmental risk of copper increased with copper concentration,and the environmental risk to gley type paddy soil was greater than that to waterloggogenic paddy soil.

关 键 词：水稻土 铜 吸附 解吸 环境风险评估 

分 类 号：S153[农业科学—土壤学]