Measurement report: Exploring the variations in ambient BTEX in urban Europe and their environmental health implications

Atmospheric chemistry and physics, Journal Year: 2025, Volume and Issue: 25(1), P. 625 - 638

Published: Jan. 17, 2025

Abstract. BTEX (benzene, toluene, ethylbenzene, and m-xylene,p-xylene, o-xylene) are significant urban air pollutants. This study examines variability across 7 European countries using data from 22 monitoring sites in different settings (urban background, traffic, industry, suburban background). Results indicate that the relative abundance of areas follows order toluene > benzene m,p-xylene o-xylene with median mixing ratios 266 ± 152, 163 74, 129 88, 53 35, 45 27 ppt during years 2017–2022, respectively. Seasonal trends show had similar concentrations industrial sites, indicating mixed sources. Toluene levels were highest traffic areas, highlighting road emissions. Ethylbenzene xylenes showed equivalent but lower backgrounds. Peak occurred morning evening rush hours, linked to heating, atmospheric stagnation. B/T ranged 0.29 0.11 1.35 0.95, X/E 1.75 0.91 3.68 0.30, primary pollution local followed by solvents, coatings, biomass burning. Lifetime cancer risk exposure was below definite threshold (10−4) above permissible level (10−6), suggesting moderate particularly areas. Additionally, health index at generally than limit value, a low non-carcinogenic overall. offers essential insights into environments.

Language: Английский

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Assessment of the impact of benzene, toluene, ethylbenzene, and xylene (BTEX) on soil microbial population in selected areas of Port Harcourt City, Nigeria

Scientific African, Journal Year: 2025, Volume and Issue: unknown, P. e02525 - e02525

Published: Jan. 1, 2025

Language: Английский

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ZIF-8/PLA porous composite microspheres: preparation, characterization, and effective removal of gaseous benzene

Frontiers in Materials, Journal Year: 2025, Volume and Issue: 12

Published: Feb. 7, 2025

Benzene is a prevalent environmental contaminant, and its effective removal through adsorption crucial to mitigate both health impacts. In this study, series of zeolitic imidazolate framework-8/polylactic acid (ZIF-8/PLA) porous microspheres were prepared adsorb/remove gaseous benzene. The ZIF-8/PLA via the double emulsion-solvent evaporation method with ammonium bicarbonate as foaming agent, structures well adjusted by varying fabrication parameters microspheres. benzene these was evaluated in flowing vapor cigarette smoke. These exhibited an interconnected network structure high surface area, which beneficial for fast gas diffusion adsorption, particularly suitable complex environments flow rates. capacity on 77–238 mg/g 18%–44% can be removed from smoke using absorbents due hierarchical enhancing strong π-π stacking interactions ZIF-8 towards aromatic hydrocarbons, showing great potential adsorbents efficient

Language: Английский

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An AI-Based Framework for Characterizing the Atmospheric Fate of Air Pollutants Within Diverse Environmental Settings

Atmosphere, Journal Year: 2025, Volume and Issue: 16(2), P. 231 - 231

Published: Feb. 18, 2025

This study introduces a novel artificial intelligence (AI) modeling framework that combines machine learning algorithms optimized through metaheuristics with explainable AI to capture complex interactions among pollutant concentrations, meteorological data, and socio-economic indicators. Applied COVID-19-related dataset comprising 404 variables, benzene concentrations as the target—measured using proton transfer reaction–mass spectrometry in Belgrade, Serbia—the demonstrated exceptional sensitivity assessing impact of environmental societal changes during pandemic. Explainable techniques, such SHAP SAGE, were employed reveal influence each predictor, while clustering values identified distinct settings influenced behavior. Three regarding levels onset state emergency. The first, involving local petroleum-related activities, biomass burning, chemical manufacturing, traffic, led 15.7% reduction levels. second, characterized by non-combustion processes, nocturnal chemistry, specific context, resulted 51.9% increase. third, driven industrial contributed modest 2.33% reduction. underscored critical role shaping air behavior, emphasizing importance integrating broader contexts into models gain more comprehensive understanding pollutants their dynamics.

Language: Английский

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An ecotoxicological view on solvents neurotoxicity

Advances in neurotoxicology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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Optimizing Magnetic Carbon Nanotube/Polyaniline Nanocomposite for Sequestering Harmful Organic Contaminants

Water Air & Soil Pollution, Journal Year: 2025, Volume and Issue: 236(4)

Published: March 7, 2025

Language: Английский

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Aromatics from fossil fuels and breast cancer

iScience, Journal Year: 2025, Volume and Issue: unknown, P. 112204 - 112204

Published: March 1, 2025

Polycyclic aromatic hydrocarbons (PAHs) from fossil fuels initiate breast cancer in animal models, and humans a link between PAH exposure risk has been established. In women, it takes approximately two decades for PAH-exposed cells to progress diagnosable cancer, the needs happen during time window when is vulnerable PAHs. Further, not everyone exposed high levels of PAHs develops cancer. are most likely lead initiation among individuals who were utero through pregnant mothers environmental pollutants or maternal obesity both. These early life exposures shown increase daughter's later susceptibility by causing daughter (1) an number structures which place, (2) suppression, perhaps epigenetically, ability repair DNA damage caused inhibiting expression tumor suppressor genes, (3) persistent gut dysbiosis, then impacts immune microenvironment. Among that may be volatile BTEX compounds. Thus, aromatics involved efforts should directed toward reducing human these compounds prevent

Language: Английский

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Health risk and toxicity assessment of exhaust air from non-incineration devices for hospital waste treatment in Tehran, Iran

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 10, 2025

Language: Английский

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Üniversite kampüs girişi uçucu organik bileşik seviyeleri ve mesleki maruziyetin tahmin edilmesi

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi, Journal Year: 2025, Volume and Issue: 14(2), P. 551 - 562

Published: April 15, 2025

Uçucu Organik Bileşikler (UOB’ler), atmosfer kimyası ve insan sağlığını önemli ölçüde etkiler. UOB’lerin en kaynakları solvent kullanımı, fosil yakıtlar, araç egzozları sigaradır. Çalışmada, egzozlarından kaynaklanan kampüs ana giriş kapılarında dış hava iç ortamdaki konsantrasyonlarının belirlenmesi tespit edilen solunması ile görevli güvenlik personelinde oluşturacağı sağlık etkilerinin değerlendirilmesi amaçlanmıştır. Örnekleme süresi, personelin çalışma süreleri dikkate alınarak belirlenmiştir. noktalarındaki ortalama UOB konsantrasyonları Doğu Kapısı’nda, ortamda gece 11.9 µg/m3, gündüz 9.6 havada 6.8 µg/m3 8.8 olarak edilmiştir. Batı Kapısı’nda 12.3 16.4 6.3 9.3 Yaşam boyu UOB’lere maruz kalmanın yol açtığı kanserojen risk genel kabul edilebilir seviyesi olan 1.0×10−6'nın üzerindedir. Hem ortam hem de havadaki UOB’ler için kronik toksik etki değeri düzeydedir (HQ

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Global landscape fire-sourced ambient benzene and health risks in different future scenarios

Environmental Pollution, Journal Year: 2025, Volume and Issue: unknown, P. 126314 - 126314

Published: April 1, 2025

Language: Английский

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