摘要
采用静态吸附过程和动态柱淋洗方法研究了不同模拟降水量下锌在土壤中的吸附和迁移。结果表明：锌在土壤中的吸附平衡时间为24 h。加入不同淋洗剂及调节淋洗剂的pH值（3.8～7.8）能显著影响锌在土壤中的吸附能力,较高pH值具有更强的吸附能力。1/2模拟年降雨量能使1 000 mg添加锌垂直迁移20 cm土壤层。柠檬酸淋洗液在不同pH值下对锌在土壤中的迁移有较好的防止作用。
The sorption and migration experiments of zinc in soils were studied by batch process and dynamic column elution method with simulated rainfall. The results showed that it took 24 hours for zinc reaching sorpfion balance and the pH value with different elution solution ranging from 3.8 to 7.8 could affect the sorption capacity obviously, the solution with larger pH value caused the higher zinc sorption capacity in soils. 1000 mg added zinc could vertically penetrate twenty centimeter soil horizons by 1/2 simulated annual rainfall and the citric acid with various pH value had good performance to preventing zinc from polluting the soils.
出处
《水土保持学报》
CSCD
北大核心
2009年第3期58-60,共3页
Journal of Soil and Water Conservation
基金
浙江省科技厅钱江人才资助项目(2007R10019)
关键词
锌
吸附和迁移
模拟降雨量
土壤和土壤层
zinc
sorption and migration
simulated rainfall
soil and soil horizon
作者简介
丁兴成（1977-），男，博士，副教授，主要从事重金属土壤污染修复及调控。E-mail：dingxch@zju．edu．cn
