| 柠檬酸和草酸对茶园土壤氟吸附能力及形态分布的影响 |
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| 引用本文： | 刘春丽,谢忠雷.柠檬酸和草酸对茶园土壤氟吸附能力及形态分布的影响[J].河南师范大学学报(自然科学版),2009,37(4). |
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| 作者姓名： | 刘春丽 谢忠雷 |
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| 作者单位： | 1. 贵州师范大学,化学与材料科学学院,贵阳,550001
2. 吉林大学,环境与资源学院,长春,130012 |
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| 摘 要： | 通过自然茶园采样实验室模拟,研究了柠檬酸与草酸对茶园土壤氟的吸附能力和氟形态分布的影响.结果表明,低浓度氟时低分子量有机酸对茶园土壤氟的吸附有抑制作用而高浓度的氟时有促进作用.外源氟在茶园土壤中向各活性形态转化,但以残渣态和水溶态为主.柠檬酸与草酸对茶园土壤各形态氟含量和转化率有不同程度的影响,但外源氟进入茶园土壤后,氟的形态分布规律基本为:残渣态>>水溶态>有机态铁锰态>交换态.
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| 关 键 词： | 茶园土壤 氟 低分子量有机酸 吸附能力 形态分布 |
Effects of Citric Acid and Oxalic Acid on Adsorption Capacity and Distribution of Fluoride in Tea Garden Soil |
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| LIU Chun-li,XIE Zhong-lei.Effects of Citric Acid and Oxalic Acid on Adsorption Capacity and Distribution of Fluoride in Tea Garden Soil[J].Journal of Henan Normal University(Natural Science),2009,37(4). |
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| Authors: | LIU Chun-li XIE Zhong-lei |
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| Abstract: | The effects of citric acid and oxalic acid on the adsorption capacity and distribution of fluoride in tea garden soil are studied by laboratory simulation in the paper.The results show that citric acid and oxalic acid could inhibit the adsorption of fluoride at low concentrations and promoted the adsorption of fluoride at high concentrations in the tea garden soil.The extraneous source fluoride has transformed to various active forms in the tea garden soil,but mainly existing with residual and water-soluble forms.Citric acid and oxalic acid have varying degree impact on the content and transformation rate of the different fluoride forms in the tea garden soil,the distribution law of the exogenous fluoride absorbed by the tea garden soil,however,is generally as following: residual water-soluble> organic Fe-Mn oxide> exchangeable. |
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| Keywords: | tea garden soil fluoride low-molecular-weight organic acids adsorption capacity distribution |
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