Title

Direct Determination Of Dibenzo[A,L]Pyrene And Its Four Dibenzopyrene Isomers In Water Samples By Solid-Liquid Extraction And Laser-Excited Time-Resolved Shpol'Skii Spectrometry

Abstract

Dibenzo[a,l]pyrene is considered the most potent carcinogen of all polycyclic aromatic hydrocarbons ever tested. Its four isomers, which include dibenzo[a,e]-pyrene, dibenzo[a,h]pyrene, dibenzo[a,i]pyrene, and dibenzo[e,l]pyrene, are also carcinogenic and, therefore, a potential threat to humans. The method presented here provides a direct way for their determination in water samples. The entire procedure - from water extraction to LETRSS analysis - takes less than 15 min/sample and it consumes only 100 μL of organic solvent. This fact makes our approach environmentally friendly and cost-effective. Unambiguous isomer determination is accomplished via multidimensional data formats, namely, wavelength time matrixes, excitation - emission matrixes, and time-resolved excitation - emission matrixes. The analytical figures of merit demonstrate precise and accurate analysis at the sub-parts-per-billion level. Limits of detection are at the parts-per-trillion level. The potential of this approach for real-world analysis is illustrated with a heavily contaminated water samples. © 2005 American Chemical Society.

Publication Date

3-1-2005

Publication Title

Analytical Chemistry

Volume

77

Issue

5

Number of Pages

1440-1447

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/ac048310d

Socpus ID

14744274794 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/14744274794

This document is currently not available here.

Share

COinS