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A New Colorimetric Reagent for Carbon Monoxide

 

作者: JackL. Lambert,   PhilipA. Hamlin,  

 

期刊: Analytical Letters  （Taylor Available online 1971）
卷期: Volume 4, issue 11  

页码: 745-750

 

ISSN:0003-2719

 

年代: 1971

 

DOI:10.1080/00032717108058674

 

出版商: Taylor & Francis Group

 

关键词: colorimetric;spectrophotometric;carbon monoxide;sodium tetra-chloropalladate(II);ethylenediaminetetraacetatoferrate(III);2,2′-dipyridyl;1,10-phenanthroline;sodium molybdate

 

数据来源: Taylor

 

摘要:

A new colorimetric reagent for carbon monoxide is described. The reaction sequence apparently involves reduction by carbon monoxide of [PdCl4]2-, which then reduces [FeIIIEDTA]−to [FeIIEDTA]2-. The latter undergoes ligand exchange with 2,2′-dipyridyl or 1,10-phenanthroline to form the more stable colored [FeL3]2+, which is measured spectrophotometrically. Sodium molybdate enhances the overall reaction. The color intensity produced is non-linear but reproducible. The method is unique in that a soluble colored compound is produced rather than a metal sol.

 

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