Chemical characteristics of BTEX, Formaldehyde and Trace gases: concentration, ozone formation potential and source apportionment at a campus site of Agra DOI

Neelam Baghel,

Anita Lakhani, Aparna Satsangi

и другие.

Environmental Monitoring and Assessment, Год журнала: 2024, Номер 196(12)

Опубликована: Ноя. 25, 2024

Язык: Английский

Measurement report: Exploring the variations in ambient BTEX in urban Europe and their environmental health implications DOI Creative Commons
Xiansheng Liu,

Xun Zhang,

Marvin Dufresne

и другие.

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

Development and Optimization of a Gas Chromatography–Mass Spectrometry Analytical Method for Detecting Sulfolane and Benzene Toluene, Ethylbenzene, and Xylenes in Water Samples DOI Creative Commons

Merrik Kobarfard,

Alexander Sweett, Jonas Hansson

и другие.

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

Assessment of the impact of benzene, toluene, ethylbenzene, and xylene (BTEX) on soil microbial population in selected areas of Port Harcourt City, Nigeria DOI Creative Commons
Paul M. Wanjala, Opoku Kwasi Boadu,

Etela Ibisime

и другие.

Scientific African, Год журнала: 2025, Номер unknown, С. e02525 - e02525

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0

ZIF-8/PLA porous composite microspheres: preparation, characterization, and effective removal of gaseous benzene DOI Creative Commons
Jiali Li,

Peijian Sun,

Yipeng Wang

и другие.

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

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

Nataša Radić,

Mirjana Perišić, Gordana Jovanović

и другие.

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

An ecotoxicological view on solvents neurotoxicity DOI
Daiana Silva Ávila, Marcell Valandro Soares, Lisiane Martins Volcão

и другие.

Advances in neurotoxicology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0

Optimizing Magnetic Carbon Nanotube/Polyaniline Nanocomposite for Sequestering Harmful Organic Contaminants DOI
Khalid Z. Elwakeel, Ahmed M. Elgarahy, M. Sh. Zoromba

и другие.

Water Air & Soil Pollution, Год журнала: 2025, Номер 236(4)

Опубликована: Март 7, 2025

Язык: Английский

Процитировано

0

Aromatics from fossil fuels and breast cancer DOI Creative Commons
Leena Hilakivi‐Clarke,

Theresa Krista Jolejole,

Joas Lucas da Silva

и другие.

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

Health risk and toxicity assessment of exhaust air from non-incineration devices for hospital waste treatment in Tehran, Iran DOI Creative Commons
Zohreh Bahmani, Kamyar Yaghmaeian, Ramin Nabizadeh

и другие.

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Апрель 10, 2025

Язык: Английский

Процитировано

0

Üniversite kampüs girişi uçucu organik bileşik seviyeleri ve mesleki maruziyetin tahmin edilmesi DOI Creative Commons
Yetkin Dumanoğlu,

Aslıhan Irmalı

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