摘要
采用连续提取法对土壤中砷的化学形态进行分析研究,比较加入不同改良剂时砷的各种形态含量的变化。结果表明,在加入改良剂时,土壤中5种形态的砷含量均有所改变,易于被植物吸收的可交换态砷的含量均有下降;在分别加入氧化钙和碳酸钠固体时,可交换态砷含量分别下降42.11%和70.10%,但以碳酸盐形态存在的砷含量却升高646.01%和618.78%;实验发现加入8-羟基喹啉时,易于被植物吸收的可交换态和碳酸盐结合态砷的含量下降值最大,显示出较好的砷污染改良效果。
A continuous extraction method was adopted to analyze the chemical forms of arsenic （As） in soil, and the content change of As with different forms were compared when the additives were added. The results showed that the content of As with five forms were changed in treated soil, and the content of exchangeable As absorbed by plant was decreased. When calcium oxide and sodium carbonate solid was added to soil, the content of exchangeable arsenic was decreased by 42.11% and 70.10%, respectively, while that of carbonate As was increased by 646.01% and 618.78%, respectively. When 8-hydroxylquinoline was added to soil, the contents of exchangeable As and carbonate bound form As were decreased mostly, which indicated that 8-hydroxylquinoline had better improving effects on the contaminated soil by arsenic.
出处
《广西农业科学》
CSCD
2009年第4期382-384,共3页
Guangxi Agricultural Sciences
基金
广西科学基金项目(桂科自0679019)
广西科学研究与技术开发计划项目(桂科攻0719005-2-2A)
广西师范学院基础研究基金项目(0710A001)
