模拟降雨量对锌在土壤层中的吸附和迁移研究  

Study of Zinc Sorption and Migration by Simulated Rainfall in Soil Horizons

作　　者：丁兴成[1] 阚登蕾[1] 谭媛媛[1] 汪华明 

机构地区：[1]浙江大学原子核农业科学研究所,浙江杭州310029 [2]浙江省上虞市环境保护局,浙江上虞312300

出　　处：《水土保持学报》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)

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.

关 键 词：锌 吸附和迁移 模拟降雨量 土壤和土壤层 

分 类 号：O614.24[理学—无机化学]