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Sensitive Spectrophotometric Determination of Benzoylperoxide withN,N,N′,N′-Tetramethyl-p-phenylenediamine

 

作者: Itsuo Mori,   Hiroshi Tominaga,   Yoshikazu Fujita,   Takako Matsuo,  

 

期刊: Analytical Letters  （Taylor Available online 1997）
卷期: Volume 30, issue 13  

页码: 2433-2439

 

ISSN:0003-2719

 

年代: 1997

 

DOI:10.1080/00032719708001752

 

出版商: Taylor & Francis Group

 

关键词: Spectrophotometry;benzoylperoxide;cerium(IV);N,N,N,N-tetramethyl-p-phenylenediamine

 

数据来源: Taylor

 

摘要:

A highly sensitive spectrophotometric determination of benzoylperoxide (BPO) based on the color developing reaction betweenN,N,N′,N′-tetramethyl-p-phenylenediamine (TMPD) and BPO in the presence of cerium(IV) in weakly acidic media is proposed. The calibration graph is linear in the range 0–6000 ng BPO per 10 ml with an apparent molar absorptivity of 4.73 × 1051 mol−1cm-1 at 612 nm. The proposed method is about 50-fold more sensitive than N-ethyl-2-naphthylamine (NENA), and application to assays of flour is described.

 

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