摘要
[目的]为了探明改良剂与土壤Cu和Cd的作用规律。[方法]通过解吸试验和土培试验,分析粉煤灰和石灰为化学改良剂对矿区土壤Cu和Cd化学形态的影响。[结果]当粉煤灰和石灰用量分别为土重的5.00%和0.10%时,Cu和Cd的浸提量可控制在阈值内(TCLP,USEPA)。[结论]粉煤灰和石灰可有效降低土壤重金属可提取态的含量。
[Objective] The research aimed to explore the rules of the interaction between chemical amendments（lime and fly ash） and Cu and Cd in the polluted soil.[Method] Sorption and soil incubation experiments were carried out.The effects of chemical amendments（lime and fly ash） on chemical forms of Cu and Cd were studied.[Result] The leaching contents of Cu and Cd were lower than the threshold of the standard（TCLP,USEPA）,when the dose of fly ash and lime in the soils were 5% and 0.1%（by soil weight） respectively.After adding the amendments to the polluted soil,the soluble and exchangeable related Cu and Cd decreased,while carbonate related heavy metal and organic complex Cu and Cd increased.[Conclusion] Fly ash and lime could effectively reduce the availability of heavy metals.
出处
《安徽农业科学》
CAS
2012年第6期3339-3340,3373,共3页
Journal of Anhui Agricultural Sciences
基金
江西省科技支撑项目(2010BSA20000)
