%0 Journal Article
%A ZHANG Di-meng
%A HU Yan-ping
%A WANG Zhen-hua
%A LI Qing-yun
%A LI Guan-ya
%T Influence of Exogenous Humic Acid on Heavy Metal Cd Activity in Clayey Farmland Soil
%D 2020
%R 10.11988/ckyyb.20181110
%J Journal of Changjiang River Scientific Research Institute
%P 68-71
%V 37
%N 2
%X The effects of two different extrogenous humic acids on the activity of Cd in clayey farmland were examined by measuring the content of total Cd, DTPA-Cd and MgCl<sub>2</sub>-Cd after leaching treatment. After two humic acid treatments, the total content of Cd content in the soil remained unchanged in general, the content of DTPA-Cd decreased from 0.421 mg/kg to 0.313 mg/kg, and the content of MgCl<sub>2</sub>-Cd declined from 0.2 mg/kg to 0.169 mg/kg. When leaching time increased from 1 day to 5 days, the total content of Cd also remained unchanged overall, DTPA-Cd decreased from 0.325 mg/kg to 0.265 mg/kg, and MgCl<sub>2</sub>-Cd reduced from 0.196 mg/kg to 0.165 mg/kg. In conclusion, both the exogenous humic acids could remove Cd in the soil of clayey farmland.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20181110