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Potentionetric Titrations Of Oxalate With A Fluoride-Selective Electrode

 

作者: R. Pardo,   J.L. Bernal,   E. Barrado,  

 

期刊: Analytical Letters  （Taylor Available online 1981）
卷期: Volume 14, issue 19  

页码: 1541-1550

 

ISSN:0003-2719

 

年代: 1981

 

DOI:10.1080/00032718108059819

 

出版商: Taylor & Francis Group

 

关键词: Oxalate;Fluoride Electrode;Potentiometric Titration;Lanthanum(III)

 

数据来源: Taylor

 

摘要:

Two methods for oxalate determination with a fluorideselective electrode are proposed. For oxalate amounts higher than 0.2 mmol, the joint precipitation of oxalate and standard fluoride with lanthanum(III) can be used. For smaller oxalate amounts, the precipitation of oxalate with excess of lanthanum(III) followed by back-titration with fluoride, is suitable. The end-points are located using the second derivative procedure and by means of the Gran method, respectively.

 

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