Article ID Journal Published Year Pages File Type
602761 Colloids and Surfaces B: Biointerfaces 2008 4 Pages PDF
Abstract

Herein, montmorillonite calcium was exchanged with a cationic surfactant: cetyltrimethylammonium bromide (CTAB). The resulting CTAB-modified montmorillonite calcium (CTAB-MMT) shows higher accumulation efficiency to 4-chlorophenol compared with the unmodified MMT. At the CTAB-MMT-modified carbon paste electrode, the oxidation peak current of 4-chlorophenol remarkably increases. Based on this, a novel, sensitive and convenient electrochemical method was developed for the determination of 4-chlorophenol. The oxidation peak current of 4-chlorophenol is proportional to its concentration over the range from 5.0 × 10−8 to 1.0 × 10−5 mol L−1. The limit of detection is evaluated to be 2.0 × 10−8 mol L−1 for 2 min accumulation. Finally this newly proposed method was successfully applied to determine 4-chlorophenol in water samples.

Related Topics
Physical Sciences and Engineering Chemical Engineering Colloid and Surface Chemistry
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