Environmental Monitoring and Assessment, Год журнала: 2024, Номер 196(12)
Опубликована: Ноя. 25, 2024
Язык: Английский
Atmospheric chemistry and physics, Год журнала: 2025, Номер 25(1), С. 625 - 638
Опубликована: Янв. 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.
Язык: Английский
Процитировано
4
Separations, Год журнала: 2025, Номер 12(5), С. 127 - 127
Опубликована: Май 15, 2025
Sulfolane, an organic solvent widely used in the petrochemical industry, has raised concerns due to its potential health risks and environmental mobility. Toxicological studies suggest that it may negatively affect human ecological health, highlighting need for risk assessments. Alongside sulfolane, BTEX compounds (benzene, toluene, ethylbenzene, xylenes) are commonly present operations, their migration be influenced by sulfolane. This study developed a gas chromatography–mass spectrometry (GC-MS) method simultaneous analyses of sulfolane water. The sample preparation was designed simplicity allow easy implementation without specialized equipment. characterized, validated, ruggedness tested through experimental design. then applied evaluate stability water samples under various storage conditions, analyze 97 real collected from contaminated site Alberta, Canada. results identified 17 with concentrations exceeding maximum limits aquatic life preservation, three detectable toluene levels. These findings highlight further research better understand contamination profiles assess associated risks.
Язык: Английский
Процитировано
0
Scientific African, Год журнала: 2025, Номер unknown, С. e02525 - e02525
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
Frontiers in Materials, Год журнала: 2025, Номер 12
Опубликована: Фев. 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
Язык: Английский
Процитировано
0
Atmosphere, Год журнала: 2025, Номер 16(2), С. 231 - 231
Опубликована: Фев. 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.
Язык: Английский
Процитировано
0
Advances in neurotoxicology, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
Water Air & Soil Pollution, Год журнала: 2025, Номер 236(4)
Опубликована: Март 7, 2025
Язык: Английский
Процитировано
0
iScience, Год журнала: 2025, Номер unknown, С. 112204 - 112204
Опубликована: Март 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
Язык: Английский
Процитировано
0
Scientific Reports, Год журнала: 2025, Номер 15(1)
Опубликована: Апрель 10, 2025
Язык: Английский
Процитировано
0
Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi, Год журнала: 2025, Номер 14(2), С. 551 - 562
Опубликована: Апрель 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
Процитировано
0