农业环境科学学报2011，Vol.30Issue(3)：534-538,5.
腐植酸在土壤中迁移的模拟实验研究
Simulated Experiment on Transport of Humic Acid in Soil
摘要
Abstract
Humic acid in groundwater is closely related to human health. The concentration of humic acid in soil and groundwater is affected by the transport of humic acid in soil. The transport of humic acid at different conditions was studied by soil column experiments. The results showed that the outlet concentration of humic acid increased over time,and finally reached stable; In the same time, when the initial concentration of humic acid solution was 15 mg·L-1, the outlet concentration was higher and reached steady concentration 24 h earlier than the one whose initial concentration was 10 mg ·L-1; When the pH value of leanheate was 9,the outlet concentration was higher and reached steady concentration 16 h earlier than the one whose pH value was 4. The high clay content enhanced the adsorption and retard of humic acid in soils, the outlet concentration of silty clay column was lower and reaches steady concentration 16 h later than the sandy loam colum; When the thickness of soil was 5 cra, the outlet concentration was higher and reached steady concentration 32 h earlier than the one whose thickness was 15 cm. It was concluded that the adsorption was the main reason of outlet concentration changing. The physicochemical property of humic acid and soil was the primary factor of humic acid transport in soil.关键词
腐植酸/土壤/迁移/模拟实验Key words
humic/ soil/ transport/ simulation experiments分类
农业科技引用本文复制引用
潘博,冯启言,孟庆俊..腐植酸在土壤中迁移的模拟实验研究[J].农业环境科学学报,2011,30(3):534-538,5.基金项目
中国矿业大学青年基金项目《土壤及浅层地下水中腐植酸和硝酸盐迁移转化机理》(2007A032) （2007A032）
