摘要
介绍除草剂２,４－Ｄ在４种不同有机碳含量、不同ｐＨ值的土壤中吸附常数的测定．结果表明,４种土壤对２,４－Ｄ的吸附等温线均符合非线形的Ｆｒｅｕｎｄｌｉｃｈ吸附等温式,其有机碳吸附常数的平均值为２３９．６．２,４－Ｄ的吸附常数与土壤有机碳含量呈正相关,土壤的ｐＨ值对２,４－Ｄ的吸附也有一定的影响．
The adsorption constant of 2,4-dichlorophenoxyacetic acid (2,4-D) was determined in 4 soils in which there were different organic carbon content and pH value in laboratory studies. Measured equilibrium isotherms for 2,4-D in the soils were of nonlinear Freundlich type. The average value of organic carbon adsorption constant of 2,4-D in soil was 239.6. Adsorption constant of 2,4-D was significantly correlated with the organic carbon content of the soils and was also effected by pH value in soils.
出处
《环境化学》
CAS
CSCD
北大核心
2001年第4期362-366,共5页
Environmental Chemistry
基金
中国科学院资源与生态环境重大研究项目B基金资助项目
关键词
除草剂
吸附常数
吸附等温线
土壤监测
herbicide
2,4-D
adsorption constant
adsorption isotherms.
