首页   按字顺浏览 期刊浏览 卷期浏览 Optimization in the Formaldehyde Determination at Sub-PPM Level from Acetals by HPLC-DAD
Optimization in the Formaldehyde Determination at Sub-PPM Level from Acetals by HPLC-DAD

 

作者: Andrei Medvedovici,   Victor David,   Frank David,   Pat Sandra,  

 

期刊: Analytical Letters  （Taylor Available online 1999）
卷期: Volume 32, issue 3  

页码: 581-592

 

ISSN:0003-2719

 

年代: 1999

 

DOI:10.1080/00032719908542840

 

出版商: Taylor & Francis Group

 

关键词: HPLC-DAD;formaldehyde;Methylal;Ethylal;2,4-dinitrophenylhydrazine

 

数据来源: Taylor

 

摘要:

Determination of formaldehyde at sub-ppm level as impurity in acetals using HPLC-DAD is described. Automated on-line precolumn derivatization reaction with 2,4 dinitrophenylhydrazine has been used. Breakdown rates of some industrial scale used acetals (Methylal, Ethylal) to formaldehyde by hydrolysis in aqueous media, according to pH, are described.

 

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