ESSa - Publicações em Proceedings Indexadas à WoS/Scopus
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Browsing ESSa - Publicações em Proceedings Indexadas à WoS/Scopus by Subject "Aromatic hydrocarbons"
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- Firefighters's occupational exposure to PM2.5 and polycyclic aromatic hydrocarbonsPublication . Oliveira, Beatriz; Slezakova, Klara; Pereira, Maria do Carmo; Fernandes, Adília; Vaz, Josiana A.; Delerue-Matos, Cristina; Morais, SimoneThis study collected the personal PM2.5 air fraction in fifteen healthy and no-smoking firefighters during their normal shift inside four Portuguese fire stations. Indoor PM2.5 levels varied between 0.05 to 1.04 µg/m3. Polycyclic Aromatic Hydrocarbons (PAHs) are known for their ubiquity and toxicity, being some of them classified as carcinogenic and possible carcinogens to humans. Firefighters’ personal PM2.5-bound total PAH concentrations ranged between 35.8 to 294 ng/m3 with total carcinogenic PAHs accounting with 12% to the total PAHs. Benzo[a]pyrene, the PAH biomarker of carcinogenicity, was detected in levels ranging from 6.74 × 10-2 to 1.00 ng/m3
- Levels of urinary 1- hydroxypyrene in firemen from the Northeast of PortugalPublication . Oliveira, Marta; Slezakova, Klara; Pereira, Maria do Carmo; Fernandes, Adília; Alves, Maria José; Delerue-Matos, Cristina; Morais, SimonePolycyclic Aromatic Hydrocarbons (PAHs) are ubiquitous environmental pollutants that are mostly formed during incomplete combustion of organic materials (e.g. coal, oil, wood, and tobacco). Many PAHs and their epoxides are highly toxic, mutagenic and carcinogenic to humans. Thus, the present study assesses the total exposure to PAHs by the determination of 1-hydroxypyrene (1OHPy) in the urine of (non-smoking and smoking) firemen serving at four Portuguese fire corporations from the Northeast of Portugal. The global median concentrations of 1OHPy ranged between 8.0 × 10 -3 to 6.3 × 10 -2 µmol/ mol creatinine in subjects. Urinary 1OHPy levels were always below the benchmark of 0.5 µmol/mol creatinine proposed by the American Conference of Governmental Industrial Hygienists for occupational exposure to PAHs. Moderate to strong correlations were found between the urinary levels of 1OHPy and the number of cigarettes consumed per individual for some fire stations, seeming to reflect the impact of tobacco consumption in firemen’ total exposure to PAHs. © 2017 Taylor & Francis Group, London.