| pH Effect on kinetics of Heavy Metal Sorption in Soils |
| |
| 作者姓名： | LINYU－SUO XUEJIA－HUA |
| |
| 作者单位： | [1]NanjingInstituteofEnvironmentalScience,NationalEnvironmentalProtectionAgency,Nanjing210042,China [2]Nanj,NationalEnvironmentalProtectionAgency,Nanjing210042,China |
| |
| 摘 要： | The pH effect on the sorption kinetics of heavy metals in soils was studied using a constant flow leaching method.The soil samples were red soil collected from Yingtan,Jiangxi,and yellow-brown soil from Nanjing,Jiansu,The heavy metals tested were zinc and cadmium.Assuming that the experimental data diffed to the following kinetic rate equation:1/c.dx/dt=kx∞-kx,the rate constant k of sorption could be determined from the slope of the straight line by plotting of 1/c,dx/dt vs.x.The results showed that the pH effect on the rate constants of heavy mental sorption in soils was very significant.The values of k decreased with increasing pH.The sorptions were more sensitive to pH in red soil than in yellow-brown soil.
|
| 关 键 词： | 土壤吸附 重金属吸附 动力学 pH值 土壤污染 |
pH Effect on kinetics of Heavy Metal Sorption in Soils |
| |
| Institution: | [1]NanjingInstituteofEnvironmentalScience,NationalEnvironmentalProtectionAgency,Nanjing210042,China [2]Nanj,NationalEnvironmentalProtectionAgency,Nanjing210042,China |
| |
| Abstract: | |
| |
| Keywords: | |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《土壤圈》浏览原始摘要信息 |
| 点击此处可从《土壤圈》下载免费的PDF全文 |
|
