Sensitive spectrophotometric determination of benzoylperoxide with N,N,N',N'-tetramethyl-p-phenylenediamine

被引：0
作者：
Mori, I
Tominaga, H
Fujita, Y
Matsuo, T
机构：
来源：
ANALYTICAL LETTERS | 1997年 / 30卷 / 13期
关键词：
spectrophotometry; benzoylperoxide; cerium(IV); N; N-tetramethyl-p-phenylenediamine;
D O I：
暂无
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A highly sensitive spectrophotometric determination of benzoylperoxide (BPO) based on the color developing reaction between N,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 x 10(5) l mol(-1) cm(-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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页码：2433 / 2439
页数：7
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