| 几种土壤和粘土矿物上磷的解吸 |
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| 引用本文： | 赵美芝. 几种土壤和粘土矿物上磷的解吸[J]. 土壤学报, 1988, 25(2): 156-163 |
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| 作者姓名： | 赵美芝 |
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| 作者单位： | 中国科学院南京土壤研究所 |
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| 基金项目： | * 中国科学院科学基金 |
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| 摘 要： | 用0.5NHOAc、0.5NNH4F和0.1NNaOH浸提的方法,研究了几种土壤和粘土矿物上磷的解吸与矿物组成和时间的关系,以及追加吸附及其解吸状况,结果表明,全部供试样品磷的解吸量都随吸磷量的增加而增加;解吸平衡的时间除红壤需要1天外,其余样品均在1小时内基本上达到平衡,同时可见缓慢解吸作用的存在;追加吸附中可见到从吸附正值到吸附负值的转变,以及0.1NNaOH解吸磷量的明显变化。
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DESORPTION OF PHOSPHATE ON SOME SOILS AND CLAY MINERAL |
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| Zhao Meizhi. DESORPTION OF PHOSPHATE ON SOME SOILS AND CLAY MINERAL[J]. Acta Pedologica Sinica, 1988, 25(2): 156-163 |
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| Authors: | Zhao Meizhi |
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| Affiliation: | Institute of Soil Science, Academia Sinica, Nanjing |
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| Abstract: | Present paper deals with the characteristics of phosphate desorption isotherms of soils and clay mineral and P desorption with various extraction solutions. Isothrrmal adsorption of samples was first made and then phosphated sample were continuously desorbed by mean of the extraction with 0.5 N HOAc, 0.5 N NH4F and 0.1 N NaOH or with 0.5 N NH4F only. |
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