重庆市菜地土壤镉污染的原位表层淋洗-深层固化修复研究

Journal of Southwest China Normal University(Natural Science Edition)(2017)

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Abstract
采用田间原位试验,研究了表层淋洗-深层固化技术对重庆市菜地土壤与蔬菜镉污染的修复效果.结果表明,酒石酸淋洗-硫化钠固化组合对蔬菜降Cd率为48.50%,对表层土壤中Cd的削减率为31.69%,对深层土壤中Cd的固化率为20.16%.而EDTA淋洗降低了蔬菜产量,不宜推荐.本技术在不影响正常生产活动的同时,降低了蔬菜中的重金属质量分数,既能保证蔬菜的安全性,又能够尽量减少菜农经济损失,是一种适合于轻中度土壤重金属污染的修复技术.
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Key words
vegetable-base soil,Cadmium,leaching,immobilization
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