Direct determination of quinones in fine atmospheric particulate matter by GC–MS

Sousa, Eliane Teixeira; Cardoso, Manuela; Silva, Luciana da; Andrade, Jailson B. de

doi:10.1016/j.microc.2014.07.013

Cited by 17 publications

(9 citation statements)

References 26 publications

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“…In Sousa et al, 41 we found the same five quinones within the range 0.32 to 3.38 ng m -3 . Additionally, in Santos et al, 40 we found the same species considered in the present study, ranging from 0.06 to 15 ng m -3 (PAH), < LOD (limit of detection) to 69.4 ng m -3 (nitro-PAH), and 0.27 to 115 ng m -3 (quinones).…”

Section: Resultssupporting

confidence: 65%

In vitro Evaluation of Oxidative Stress Caused by Fine Particles (PM2.5) Exhausted from Heavy-Duty Vehicles Using Diesel/Biodiesel Blends under Real World Conditions

Jesus¹,

Mosca²,

Guarieiro³

et al. 2017

J. Braz. Chem. Soc.

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In this work, the redox activity of fine diesel/biodiesel particulate matter (PM 2.5 ) was studied in order to approach its toxicity from reactive oxygen species, due to adverse effects it may cause to human health. The oxidative potential was measured by the dithiothreitol (DTT) assay in order to study the relative contribution of water-soluble transition metals, polycyclic aromatic compounds (PAH), nitro-PAH, and quinones. It was analyzed a total of 24 samples collected from primarily diesel/biodiesel-exhausted particles from buses. The rate concentrations of PM 2.5 redox activity ranged 0.020-0.069 nmol min -1 μg -1, with median at 0.040 nmol min -1 μg -1 (on average, 0.042 ± 0.005 nmol min -1 μg -1 for morning, 0.033 ± 0.007 nmol min -1 μg -1 for afternoon and 0.045 ± 0.009 nmol min -1 μg -1 for night). The transition metals appear to dominate the DTT response, since they were responsible up to 89% of redox activity measured in the samples. Apparently, the metal fraction contained in PM 2.5 demonstrated a greater ability to catalyze reactions that promote the formation of reactive oxygen species when compared to organic compounds. It was observed that the oxidative potential of PM 2.5 particles emitted from diesel/biodiesel (B7) is similar to diesel-emitted particles.

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Section: Resultssupporting

confidence: 65%

In vitro Evaluation of Oxidative Stress Caused by Fine Particles (PM2.5) Exhausted from Heavy-Duty Vehicles Using Diesel/Biodiesel Blends under Real World Conditions

Jesus¹,

Mosca²,

Guarieiro³

et al. 2017

J. Braz. Chem. Soc.

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show abstract

“…Estudo recente 41 comparando os métodos de determinação de quinonas por CG-EM, utilizando as formas livre e derivatizada por acetilação, 80 revelou, nas condições utilizadas, que não existem diferenças significativas nos resultados obtidos.…”

Section: Formação De Derivados Imidazólicosunclassified

“…No novo método 41 foram avaliados os seguintes parâmetros: faixa linear, linearidade, precisão, limite de detecção (LOD) e limite de quantificação (LOQ). Os limites de detecção para as cinco quinonas estudadas (1,4-BQ, 1,2-NQ, 1,4-NQ, 9,10-FQ, 9,10-AQ) para os métodos direto e derivatizado, estiveram, respectivamente, nas faixas de 0,01-2,18 mg L -1 , e 0,05-0,20 mg L -1 .…”

Section: Formação De Derivados Imidazólicosunclassified

“…54,79 Assim, 1,4-BQ e 1,2-NQ predominam na fase vapor; a 1,4-NQ está distribuída entre as fases vapor e particulada; e 9,10-FQ e 9,10-AQ predominam associadas ao material particulado atmosférico, como pode ser observado nos resultados experimentais registrados na Tabela 6. 34,54,80,81 Estudos recentes 41 relacionados à determinação das quinonas, 1,4-benzoquinona, 1,2-naftoquinona, 1,4-naftoquinona, 9,10-fenantraquinona e 9,10-antraquinona, em material particulado atmosférico fino (DP < 2,5 mm) em amostras coletadas em um terminal de ônibus em Salvador, Bahia, revelaram que a quinona de maior concentração foi a 9,10-FQ (7,39 ng m -3 ), que é altamente tóxica. 40 A sua presença em amostras ambientais representa riscos para a saúde, especialmente aqueles relacionados com doenças cardiopulmonares.…”

Section: Figura 12 Esquema Analítico Para Derivatização De Quinonasunclassified

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Sources, Formation, Reactivity and Determination of Quinones in the Atmosphere

2016

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“…Benzoquinones are toxic components of air pollution emitted by various sources, including cigarette smoke [1], motor vehicles [2][3][4], particulate matter [5,6] and biomass and wood burning [4]. In addition to combustion processes, laboratory experiments have shown that benzoquinones may also be formed in the atmosphere from the gas-phase degradation of aromatic hydrocarbons [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Temperature dependent rate coefficients for the reaction of OH radicals with dimethylbenzoquinones

Bejan

Barnes

Wiesen

et al. 2015

Chemical Physics Letters

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Direct determination of quinones in fine atmospheric particulate matter by GC–MS

Cited by 17 publications

References 26 publications

In vitro Evaluation of Oxidative Stress Caused by Fine Particles (PM2.5) Exhausted from Heavy-Duty Vehicles Using Diesel/Biodiesel Blends under Real World Conditions

In vitro Evaluation of Oxidative Stress Caused by Fine Particles (PM2.5) Exhausted from Heavy-Duty Vehicles Using Diesel/Biodiesel Blends under Real World Conditions

Sources, Formation, Reactivity and Determination of Quinones in the Atmosphere

Temperature dependent rate coefficients for the reaction of OH radicals with dimethylbenzoquinones

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