F^-对Al在土壤中吸附-解吸行为的影响  

Influence of fluoride on sorption-desorption of aluminum in soil.

作　　者：杨杰文[1] 蒋新[1] 徐仁扣[1] 季国亮[1] 赵其国[1] 

机构地区：[1]中国科学院南京土壤研究所,江苏南京210008

出　　处：《中国环境科学》2002年第2期158-161,共4页China Environmental Science

基　　金：国家自然科学基金资助项目(49831005);国家重点基础规划项目(G1999011801-3)

摘　　要：研究了F-对Al在土壤中吸附-解吸行为的影响.结果表明,F-可以通过两种方式来影响土壤对Al的吸附.加入的F-与Al形成F-Al络合物后将减少土壤对铝的吸附量;土壤吸附F-时释放的OH-则将提高土壤对铝的吸附量,一定程度上抑制了前一种方式的影响,但F-将降低土壤对Al的吸附量这一规律没有改变.由于土壤对Al有很强的亲合力,能被1.0M KCl解吸下来的铝数量很小,F-对铝的解吸行为没有产生明显的影响.Influence of fluoride on sorption-desorption of aluminum in soil was studied. The results showed that fluoride could affect aluminum sorption in soil through two ways. The added fluoride and the aluminum formed of F-Al complexes, which would decrease the amount of aluminum sorbed by soil, while release of OH- during the sorption of fluoride by soil would enhance the amount of aluminum sorbed by soil, which would inhibit the first affecting way to some extent; but the rule that fluoride would decrease the amount of aluminum sorbed did not change. Due to the high affinity of soil for aluminum, very little amount of aluminum could be desorpted by 1.0M KCl; and the influence of fluoride on the desorption of aluminum was not evident.

关 键 词：氟 铝 吸附 解吸 

分 类 号：X131.3[环境科学与工程—环境科学]