Authors: Yu, Shenjiang; Campiglia, Andres D.

Source: Applied Spectroscopy, Volume 58, Issue 12, Pages 349A-362A and 1377-1508 (December 2004) , pp. 1385-1393(9)

Publisher: Society for Applied Spectroscopy

Abstract:

We present a unique method for the unambiguous determination of dibenzo[a,l]pyrene, dibenzo[a,e]pyrene, dibenzo[a,h]pyrene, dibenzo[a,i]pyrene, and dibenzo[e,l]pyrene in high-performance liquid chromatography (HPLC) fractions. Chemical analysis is performed via laser-excited time-resolved Shpol'skii spectroscopy with the aid of a cryogenic fiber-optic probe, pulsed tunable dye laser, spectrograph, and intensified charge-coupled device. Unambiguous identification is accomplished via wavelength time matrix formats, which give simultaneous access to spectral and lifetime information. Prior to spectroscopic analysis, HPLC fractions are pre-treated with liquid-liquid extraction or solid-liquid extraction at the tip of the fiber-optic probe. Solid-liquid extraction gives the best limits of detection, which vary from 40 pg mL^-1 (dibenzo[a,l]pyrene) to 0.2 ng mL^-1(dibenzo[e,l]pyrene).

Keywords: INDEX HEADINGS: DIBENZO[ A,L ]PYRENE; DIBENZO[A,E]PYRENE; DIBENZO[A,H]PYRENE; DIBENZO[A,I]PYRENE; DIBENZO[E,L]PYRENE; HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY; HPLC; SHPOL'SKII SPECTROSCOPY; LASER-EXCITED TIME-RESOLVED SHPOL'SKII SPECTROSCOP

Document Type: Research article

DOI: http://dx.doi.org/10.1366/0003702042641416

Affiliations: 1: Department of Chemistry, P. O. Box 25000, University of Central Florida, Orlando, Florida 32816-2366

Publication date: 2004-12-01

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