摘要
分析了泥炭和堆肥两种有机物质的添加量水平对冶炼厂附近污染土壤中铜形态及其活性的影响。结果表明， 添加土重２ ． ５ ％ 有机物质就对土壤铜化学形态与活性产生显著的影响， 使氧化锰结合态和松结合有机态铜等向紧结合有机态铜转化， 使土壤化学活性铜 （２ ． ５ ％ 醋酸提取） 降低约２０ ％ ； 添加量增加到５ ． ０ ％ ， 控制作用有明显加强的趋势； 添加量再增至１０ ． ０ ％ ， 单位添加量有机物质的控制作用明显减弱。
After peat or compost are added in copper contaminated soil, fractionation and availability of copper are obviously affected during the nine months' incubation. Compared with no organic treatment, the fractions of soil copper changes with the sharp decrease of WBO-Cu and OXMn-Cu, and increase of SBO-Cu and AmorFe-Cu. The chemical available copper extracted by 2.5% acetic acid solution decreases by 20%～55% in all three level of organic treatments. When the amounts of organic materials added in soil increase, the effects increase. But the range of the effect with the organic amount increases from 2.5% to 5.0% is larger than that from 5% to 10%. There are the same trend of the effects with the two organic materials used in the experiment.
出处
《土壤与环境》
CSCD
1999年第1期22-25,共4页
Soil and Environmental Sciences
关键词
土壤污染
铜
形态
活性
有机物质添加量
fractionation
heavy metal pollution
amount of organic matter added
