隐蔽剂在螯合滴定中的应用(ⅩⅢ)——二本羟乙酸隐蔽钛(Ⅳ)的研究  

The Uses of Masking Agents in Chelometry(Ⅻ)——The Investigation of Masking Ti with Benzilic Acid

作　　者：陈永兆[1] 邱若兰 陈焕光[1] Chen Yongzhao;Qiu Ruolan;Chen Huanguang(Chemistry Department,Zhongshan University,Guangzhou)

机构地区：[1]中山大学化学系 [2]暨南大学化学系

出　　处：《高等学校化学学报》1985年第2期115-119,共5页Chemical Journal of Chinese Universities

摘　　要：本文提出用DCTA-二苯羟乙酸隐蔽法滴定钛的新方法,本法选择性高,用于测定钛铁矿、铝土和硅酸盐等的钛,操作简便,结果准确.Benzilic acid was found to be a specific masking agent for Ti at pH5-5.5. When DCTA is used as the titrant, the so-called "DCTA-Benzilic acid masking method" should be used to titrate the Ti. The selectivity is very high, over 33 metal ions, such as Zr, Th, Bi, Fe, Al, La, Hg, Cu, Ni etc, will not interfere. This method can be used to determine the Ti in titanium ores, bauxites and silicates with rapidity and accuracy.

关 键 词：螯合滴定 二苯羟乙酸 隐蔽剂 钛(Ⅳ) 硅酸盐 钛铁矿 选择性 

分 类 号：O65[理学—分析化学]