Micellar Enhanced Spectrofluorimetric Methods: Application to the Determination of Pyrene
作者:
Harnandan Singh,
WillieL. Hinze,
期刊:
Analytical Letters
(Taylor Available online 1982)
卷期:
Volume 15,
issue 3
页码: 221-243
ISSN:0003-2719
年代: 1982
DOI:10.1080/00032718208064379
出版商: Taylor & Francis Group
关键词: Pyrene;Micelles;CTAC;NaLS;TX-100;Analysis;Micellar Enhanced Fluorescence;Solubilization
数据来源: Taylor
摘要:
The effects of cationic hexadecyltrimethylammonium chloride (CTAC), nonionic polyoxyethylene (9.5)p-1, 1, 3, 3-tetramethylbutylphenol, Triton X-100 (TX-100), and anionic sodium dodecylsulfate (NaLS) surfactant micelles upon the spectrofluorimetric determination of pyrene is described. It was found that the intensity of the pyrene fluorescence is enhanced from 3 to 16 times in the presence of the micellar systems. Possible reasons for this micellar induced enhanced fluorescence are discussed. The spectral parameters, fluorescence lifetimes, quantum yields, lower detection limits, and analytical figures of merit for pyrene in CTAC, NaLS, TX-100, ethanol, and water are compared. The detection limit of pyrene in the presence of micelles (∼1.0 × 10−10M) is about an order of magnitude lower than that possible in alcohol alone. A brief discussion on the predicted general applicability of this new technique in fluorimetric analyses is also given.
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