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Flow injection determination of benzhexol based on its sensitizing effect on the chemiluminescent reaction of Ce(IV)–sulfite

✍ Scribed by Jingkai Zhang; Jianguo Li; Yifeng Tu

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
411 KB
Volume
25
Category
Article
ISSN
1522-7235

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✦ Synopsis

Abstract

In this paper, a novel chemiluminescent (CL) method for the determination of benzhexol has been developed by combining the flow injection technique and its sensitizing effect on the weak CL reaction between sulfite and acidic cerium(IV). A mechanism for the CL reaction has been proposed on the basis of CL spectra. Under the optimized conditions, the proposed method allows the measurement of benzhexol hydrochloride over the range 0.1–10 μg/mL with a correlation coefficient of 0.9992 (n= 8), a detection limit of 0.02 μg/mL (3__σ__), and a relative standard deviation for 2.0 μg/mL benzhexol (n= 11) of 1.65%. The utility of this method was demonstrated by determining benzhexol hydrochloride in tablets. Copyright © 2009 John Wiley & Sons, Ltd.

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