Trapping of polycyclic aromatic hydrocarbons in vehicle exhaust using an in-tube extraction device for analysis by gas chromatography-barrier ionization discharge detection.

Autor: Menezes HGP; Federal Center for Technological Education of Minas Gerais State, Avenida Amazonas, 5855, Belo Horizonte, MG 30510-000, Brazil., Batista IGDS; Federal Center for Technological Education of Minas Gerais State, Avenida Amazonas, 5855, Belo Horizonte, MG 30510-000, Brazil., de Oliveira JB; Federal Center for Technological Education of Minas Gerais State, Avenida Amazonas, 5855, Belo Horizonte, MG 30510-000, Brazil., Ferreira VMV; Federal Center for Technological Education of Minas Gerais State, Avenida Amazonas, 5855, Belo Horizonte, MG 30510-000, Brazil., de Souza PP; Federal Center for Technological Education of Minas Gerais State, Avenida Amazonas, 5855, Belo Horizonte, MG 30510-000, Brazil., Rezende PS; Federal Center for Technological Education of Minas Gerais State, Avenida Amazonas, 5855, Belo Horizonte, MG 30510-000, Brazil. Electronic address: patriciarezende@cefetmg.br.
Jazyk: angličtina
Zdroj: Journal of chromatography. A [J Chromatogr A] 2023 Jun 21; Vol. 1699, pp. 463995. Date of Electronic Publication: 2023 Apr 18.
DOI: 10.1016/j.chroma.2023.463995
Abstrakt: This work presents a methodology for polycyclic aromatic hydrocarbons (PAHs) trapping from vehicular emissions using an in-tube extraction device (IT-FEx). Trapping selectivity studies were conducted, evaluating the interaction profile between the aromatic compounds and the polymeric phase (composed of polydimethylsiloxane and internal to the IT-FEx devices), as in an aqueous equilibrium system (25 min of sampling), and as in gaseous dynamic phase (30 s of sampling), regarding a qualitative evaluation. The adsorption profiles were similar, with greater affinity for medium-sized PAHs (four aromatic rings) than for the smaller (one to three rings) and larger (five to six rings). The device was attached to a vehicle emission sampler to evaluate the qualitative emission of diesel-powered vehicles. Certain PAHs, such as phenanthrene, fluoranthene, benz[a]anthracene, chrysene, benzo[b]fluoranthene, and benzo[k]fluoranthene, were effectively trapped by the IT-FEx device and detected by the GC-BID analysis. Finally, it was possible to develop a process that combined the steps of sample preparation and instrumental analysis, using the IT-FEx device and applying it to the gaseous matrix in the dynamic phase; until then, little was elucidated regarding the use of this apparatus. This sampling device, combined with analysis by gas chromatography with a barrier ionization discharge detector (GC-BID), is a powerful tool for identifying many compounds from vehicular emissions and does not require solvents in sample preparation.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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