期刊
JOURNAL OF APPLIED ELECTROCHEMISTRY
卷 39, 期 9, 页码 1451-1455出版社
SPRINGER
DOI: 10.1007/s10800-009-9824-3
关键词
Multi-walled carbon nanotube; Modified electrode; Phloroglucinol; Surfactant; Determination
资金
- National Natural Science Foundation of China [50772074, 20571051]
- Nano-Foundation of Shanghai in China [0652nm007]
A novel technique is utilized to detect trace amounts of phloroglucinol. In pH 5.0, 0.1 mol L(-1) HAc-NaAc buffer solution, phloroglucinol exhibited a stable and sensitive oxidation signal at a glassy carbon electrode modified with multi-wall carbon nanotube. By using the surfactant cetyl pyridinium chloride, the electrochemical response was greatly enhanced. The mechanism was systematically explored. In the range 9.0 x 10(-7)-3.0 x 10(-4) mol L(-1), the oxidation peak currents of phloroglucinol have a linear relationship with concentration: the limit of detection was estimated to be 2.5 x 10(-7) mol L(-1) (S/N = 3). The method was adopted to detect the content of phloroglucinol injection, and the recovery was from 97.5% to 103.0%.
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