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Acta Chimica Sinica ›› 1965, Vol. 31 ›› Issue (5): 391-398. Previous Articles     Next Articles

隐蔽剂在螯合滴定中的应用——Ⅱ.以乳酸隐蔽钛(Ⅳ)与钛的间接滴定

陈永兆, 李煥然   

  1. 中山大学化学系
  • 投稿日期:1964-10-04 发布日期:2013-06-03

THE USES OF MASKING AGENTS IN CHELOMETRY Ⅱ. THE MASKING OF TITANIUM(Ⅳ) WITH LACTIC ACID AND THE INDIRECT TITRATION OF TITANIUM

CHEN YUNG-CHAO, LI HUAN-JAN   

  1. Chemistry Department, Sun Yat-Sen University
  • Received:1964-10-04 Published:2013-06-03

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It is found experimentally that lactic acid is a good masking agent for titanium (Ⅳ) in acidic media. At pH 5.3 and 5.8,10ml of 1:4 (V/V) lactic acid masks up to 70 and 40 mg of titanium respectively. Those ions, such as iron (Ⅲ),aluminum, lead, etc., which are not masked by lactic acid, can be titrated without the interference of titanium.