✦ LIBER ✦

Selective Analysis of Fluorene by Quenched Fluorescence in Cetylpyridinium Bromide Micelles

✍ Scribed by Juan H. Ayala; Ana M. Afonso; Venerando González-Diaz

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 136 KB
Volume: 60
Category: Article
ISSN: 0026-265X
DOI: 10.1006/mchj.1998.1637

No coin nor oath required. For personal study only.

✦ Synopsis

Cetylpyridinium bromide (CPB) acts as a quencher, provoking inhibition of the fluorescence intensity emitted by fluorene. The differences in the fluorescence quenching of several polyaromatic hydrocarbons (PAHs) allow us to develop a selective synchronous spectrofluorometric method for the determination of fluorene in a CPB micellar medium at s,ex 0 ϭ 299 nm (⌬ ϭ 10 nm), with a detection limit of 8.5 ng ml Ϫ1 . The method was applied to the analysis of groundwater samples spiked with suitable amounts of fluorene, as well as to groundwater samples polluted with combustibles.

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