期刊
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
卷 92, 期 3, 页码 324-333出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/03067310903229927
关键词
aminophenol; detection; mesoporous silica; electrochemical sensor
资金
- Zhejiang Province Extremely Key Subject Building Funding 'Pharmacology and Biochemical Pharmaceutics'
- Foundation of Wenzhou Science & Technology Bureau [Y20060241]
A mesoporous silica was synthesised and used to modify the surface of carbon paste electrode (CPE). The electrochemical behaviours of p-aminophenol were investigated. Compared to the unmodified CPE, the mesoporous silica-modified CPE obviously lowers the oxidation potential of p-aminophenol, and remarkably increases its oxidation peak current. The effects of pH value, amount of mesoporous silica, accumulation potential and time were examined. As a result, a sensitive, rapid and convenient electroanalytical method was developed for p-aminophenol. The linear range is from 0.025 mg L-1 to 3 mg L-1, and the limit of detection is 0.01 mg L-1 after 2-min accumulation. Finally, the method was successfully used to determine p-aminophenol in water samples.
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