Inflnence of PH on Chemical Forms of Phosphate Ad－sorbed on Goethite Snrfaces  

作　　者：LIU FAN￣1 JIE XIAO-LEIl￣1 ZHOU DAI-HUA￣1 Ll XUE-YUAN￣1 HE JI-ZHENG￣1 XUFENGLIN￣1 and WANG DIAN-FEN￣2( Huazhong Agricultural Unzverszty, Wuhan 43O070 ( China)(Wuhan Unzverszty of Technology, Wuhan 450070 (China) 

出　　处：《Pedosphere》1995年第2期157-162,共6页土壤圈（英文版）

摘　　要：Chemical forms of the phosphate adsorbed on goethite surfaces and characteristics of the coordinategroups 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 monodentatecorrdination to that of bidentate one with increasing pH of the solution. By influencing types of phosphateions in solutions, pH affected the chemical forms of P on goethite surfaces. The amount of OH￣- displacedby phosphate on goethite surfaces was the most at pH 7.0, the second at pH 9.0, and the least at pH 4.5.ＩｎｆｌｎｅｎｃｅｏｆＰＨｏｎＣｈｅｍｉｃａｌＦｏｒｍｓｏｆＰｈｏｓｐｈａｔｅＡｄ－ｓｏｒｂｅｄｏｎＧｏｅｔｈｉｔｅＳｎｒｆａｃｅｓＬＩＵＦＡＮ￣１；ＪＩＥＸＩＡＯ－ＬＥＩｌ￣１；ＺＨＯＵＤＡＩ－ＨＵＡ￣１；ＬｌＸＵＥ－ＹＵＡＮ￣１；ＨＥＪＩ－ＺＨＥ...

关 键 词：GOETHITE PH phosphate adsorption X-ray photoelectron spectroscopy 

分 类 号：S153.61[农业科学—土壤学] S153.3[农业科学—农业基础科学]