低分子有机酸对土壤氟吸附的影响  

Effect of Low-Molecule Organic Acids on Soil Adsorption of Fluoride.

作　　者：陈景奎[1] 于群英[1] 鲁红侠[2] 

机构地区：[1]安徽技术师范学院,安徽凤阳233100 [2]安徽省合肥教育学院

出　　处：《农村生态环境》2001年第2期53-55,共3页Rural Eco-Environment

摘　　要：用等温平衡吸附法研究了柠檬酸、草酸对砂姜黑土和潮土氟吸附的影响 ,提出了有机酸影响氟吸附的可能机理。实验结果表明 ,有机酸对土壤氟吸附有较大的影响 :(1)当有机酸处于低浓度时 ,土壤氟吸附量随浓度升高而增加 ;高浓度时 ,土壤氟吸附量随有机酸浓度升高而降低 ;(2 )在有机酸存在条件下 。With the isothermal balance adsorption method,effect of citric acid and oxalic acid on fluoride adsorption by shajiang black soil and fluvio aquic soil was investigated and their possible mechanism verified.The results showed that the effect was significant.(1)When the concentration of the organic acid was low,soil adsorption of fluoride rose with the concentration of the organic acid,and when the concentration of organic acids was high,it dropped with rise in the concentration,and (2)in the presence of the organic acids,soil adsorption of fluoride showed an extremely significant linear positive (or negative) correlationship with balanced fluoride concentration in the soil.

关 键 词：低分子有机酸 土壤 氟 吸附 等温平衡吸附法 

分 类 号：X131.3[环境科学与工程—环境科学]