| pH对针铁矿表面磷酸盐吸附的化学形态的影响 |
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| 作者姓名： | LIU Fan JIE Xiao-Lei ZHOU Dai-Hu Ll Xue-Yuan HE Ji-Zheng XU Feng-Lin WANG Dian-Fen |
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| 作者单位： | [1]HuazongAgriculturalUniversity,Wuhan430070,China [2]WuhanUniversityofTechnology,Wuhan430070（China） |
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| 基金项目： | *1Project supported by the National Natural Science Foundation of China. |
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| 摘 要： | Chemical forms of the phosphate adsorbed on goethite surfaces and characteristics of the coordinate groups which exchange with P on goethite surfaces in solutions with different pll values were investigated.Results showed that the chemical forms of P on goethite surfaces changed from the dominance of monodentate corrdination to that of bidentate one with increasing pH of the solution.By influencing types of phosphate ions in solutions,pH affected the chemical forms of P on goethite surfaces,The amount of OH^- displaced by phosphae on goethite surfaces was the most at pH 7.0,the second at pH 9.0,and the least at pH 4.5.
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| 关 键 词： | 土壤P pH值 针铁矿表面 磷酸盐吸附 化学形态 |
Influence of pH on chemical forms of phosphate adsorbed on goethite surfaces |
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| LIU Fan,JIE Xiao-Lei,ZHOU Dai-Hu,Ll Xue-Yuan,HE Ji-Zheng,XU Feng-Lin,WANG Dian-Fen.Influence of pH on chemical forms of phosphate adsorbed on goethite surfaces[J].Pedosphere,1995,5(2):157-162. |
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| Authors: | LIU Fan JIE Xiao-Lei ZHOU Dai-Hu LI Xue-Yuan HE Ji-Zheng XU Feng-Lin and WANG Dian-Fen |
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| Institution: | Wuhan Unzverszty of Technology, Wuhan 450070 (China);Wuhan Unzverszty of Technology, Wuhan 450070 (China);Wuhan Unzverszty of Technology, Wuhan 450070 (China);Wuhan Unzverszty of Technology, Wuhan 450070 (China);Wuhan Unzverszty of Technology, Wuhan 450070 (China);Wuhan Unzverszty of Technology, Wuhan 450070 (China);Wuhan Unxuersaty of Technology, Wuhan 430070 (China) |
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| Abstract: | Chemical forms of the phosphate adsorbed on goethite surfaces and characteristics of the coordinate groups which exchange with P on goethite surfaces in solutions with different pll values were investigated.Results showed that the chemical forms of P on goethite surfaces changed from the dominance of monodentate corrdination to that of bidentate one with increasing pH of the solution.By influencing types of phosphate ions in solutions,pH affected the chemical forms of P on goethite surfaces,The amount of OH^- displaced by phosphae on goethite surfaces was the most at pH 7.0,the second at pH 9.0,and the least at pH 4.5. |
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| Keywords: | goethite PH phosphate adsorption X-ray photoelectron spectroscopy |
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