Phase distribution of polycyclic aromatic hydrocarbons and their oxygenated and nitrated derivatives in the ambient air of a Brazilian urban area

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dc.creatorRosimeire Resende dos Santos
dc.creatorZenilda de Lourdes Cardeal
dc.creatorHelvécio Costa Menezes
dc.date.accessioned2023-01-11T17:35:45Z
dc.date.accessioned2025-09-08T23:07:26Z
dc.date.available2023-01-11T17:35:45Z
dc.date.issued2020
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1016/j.chemosphere.2020.126223
dc.identifier.issn0045-6535
dc.identifier.urihttps://hdl.handle.net/1843/48865
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofChemosphere
dc.rightsAcesso Restrito
dc.subjectQuímica analítica
dc.subjectHidrocarbonetos policiclicos aromaticos
dc.subjectCromatografia de gás
dc.subjectEspectrometria de massa
dc.subjectAr Qualidade
dc.subjectAr Análise
dc.subjectAr Poluição
dc.subjectBelo Horizonte (MG)
dc.subject.otherPM2.5
dc.subject.otherGas phase
dc.subject.otherHigh volume sampler
dc.subject.otherCF-SPME
dc.subject.otherGC/MS
dc.titlePhase distribution of polycyclic aromatic hydrocarbons and their oxygenated and nitrated derivatives in the ambient air of a Brazilian urban area
dc.typeArtigo de periódico
local.citation.spage126224
local.citation.volume250
local.description.resumoAir quality in large cities has worsened in recent years as a consequence people’s health is directly affected. Among the toxic compounds released to environmental air are polycyclic aromatic hydrocarbons (PAHs), nitrated PAHs (nitro-PAHs), and oxygenated PAHs (oxy-PAHs). Performant methods to analyze these compounds is necessary to enable adequate monitoring of air quality. Thus, this manuscript presents the development of a highly sensitive method to analyze PAHs, nitro-PAHs, and oxy-PAHs collected from ambient air (PM2.5) and the gas phase for a period of one year in the urban area of Belo Horizonte, Brazil. PAHs and their derivatives were extracted by cold fiber solid phase microextraction (CF-SPME) and analyzed by gas chromatography coupled to mass spectrometry (GC/MS). The proposed method allows simultaneous analysis of 16 PAHs, nitro-PAHs and oxy-PAHs, presenting very good limits of detection and quantification, as well as appropriate precision and recovery. The results obtained for the period of one year allowed different studies. The compounds collected simultaneously from gas and particulate phase showed that total concentration of 16 PAHs were higher in the gas phase than in the particulate. On the other hand, nitro-PAHs and oxy-PAHs presented similar concentration in gas and particulate phases. The potential carcinogenicity of PAHs relative to benzo[a]pyrene showed benzo[a]pyrene equivalents of 0.49 ng m−³. The estimated risk of lifetime lung cancer was 5 × 10−5. Principal component analysis and diagnostic ratio was applied for source distribution indicating that burning of gasoline, diesel and biomass accounted for the PAHs profile in ambient air samples.
local.identifier.orcidhttps://orcid.org/0000-0003-1383-6299
local.identifier.orcidhttps://orcid.org/0000-0002-5759-612X
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0045653520304161

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