Title

Laser-Excited Time-Resolved Shpol'Skii Spectroscopy For The Direct Analysis Of Dibenzopyrene Isomers In Liquid Chromatography Fractions

Keywords

Dibenzo[a,e]pyrene; Dibenzo[a,h]pyrene; Dibenzo[a,i]pyrene; Dibenzo[a,l]pyrene; Dibenzo[e,l]pyrene; High-performance liquid chromatography; HPLC; Laser-excited time-resolved; Shpol'skii spectroscopy

Abstract

We present a unique method for the unambiguous determination of dibenzo[a,l]pyrene, dibenzo[a,l]pyrene, dibenzo[a,e]pyrene, dibenzo[a,l]pyrene, and dibenzo[e,i]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 1pg mL -1 (dibenzo[e,l]pyrene).

Publication Date

12-1-2004

Publication Title

Applied Spectroscopy

Volume

58

Issue

12

Number of Pages

1385-1393

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1366/0003702042641416

Socpus ID

10644256691 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/10644256691

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