Criteria, Greenhouse Gas, and Hazardous Air Pollutant Emissions Factors from Residential Cordwood and Pellet Stoves Using an Integrated Duty Cycle Test Protocol

ACS ES&T Air, Год журнала: 2024, Номер 1(9), С. 1190 - 1202

Опубликована: Авг. 12, 2024

Air pollution from residential wood heating (RWH) presents challenges at the intersection of climate and public health. With a revised National Ambient Quality Standard (NAAQS, 9 μg/m

Язык: Английский

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Emission Factors, Chemical Composition and Ecotoxicity of PM10 from Road Dust Resuspension in a Small Inland City

Water Air & Soil Pollution, Год журнала: 2024, Номер 235(11)

Опубликована: Окт. 15, 2024

Abstract Road dust resuspension in urban environments can contribute to high human exposure metal(loid)s, polycyclic aromatic hydrocarbons, and other potentially toxic organic compounds. However, for many regions, information on loadings, emission factors chemical profiles is lacking accurately apply inventories source apportionment models. In the present study, PM 10 samples were collected with an situ road sampler from eleven representative streets of Bragança, inland city Iberian Peninsula, analysed elemental carbon by a thermal-optical technique, composition ICP-MS ICP-OES, ecotoxicity luminescence inhibition bioassay Allivibrio fischeri . A global factor 5.36 ± 2.35 mg veh −1 km was obtained but suburban areas values reached twice average. Total accounted 14.9 6.8% mass, while element oxides represented largest share (28.6 18.7%). Very enrichments found typical traffic-related elements such as Cu, Zn, S, Pb Ni. The geochemical index I geo further confirmed that study region extremely contaminated mainly originated tyre brake wear. Although total non-carcinogenic carcinogenic risks associated metal be low both children adults, bioluminescence assay showed (eco)toxic responses all samples, indicating may pose significant health ecological threat.

Язык: Английский

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Toxicological and Mutagenic Effects of Particulate Matter from Domestic Activities

Toxics, Год журнала: 2023, Номер 11(6), С. 505 - 505

Опубликована: Июнь 3, 2023

People spend most of their time indoors, particularly in houses where daily activities are carried out, enhancing particulate matter (PM) emissions with consequent adverse health impacts. This study intended to appraise the toxicological and mutagenic responses a diameter less than 10 μm (PM10) released from cooking ironing under different conditions. The cytotoxicity PM10 total organic extracts was tested A549 cells using WST-8 lactate dehydrogenase (LDH) assays, while interference cell cycle dynamics reactive oxygen species (ROS) production analysed by flow cytometry. S. typhimurium TA98 TA100 Ames tester strains without metabolic activation were employed determine potential PM10-bound polycyclic aromatic hydrocarbons (PAHs). decreased activity cells; however, no effects LDH release observed. An increase ROS levels registered only for treated at IC20 steam ironing, low ventilation conditions, affected exposure frying horse mackerel grilling boneless pork strips. No observed all PAHs samples.

Язык: Английский

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Biological Impact of Organic Extracts from Urban-Air Particulate Matter: An In Vitro Study of Cytotoxic and Metabolic Effects in Lung Cells

International Journal of Molecular Sciences, Год журнала: 2023, Номер 24(23), С. 16896 - 16896

Опубликована: Ноя. 29, 2023

Atmospheric particulate matter (PM) with diameters below 10 µm (PM10) may enter the lungs through inhalation and are linked to various negative health consequences. Emergent evidence emphasizes significance of cell metabolism as a sensitive target PM exposure. However, current understanding relationship between composition, conventional toxicity measures, rewiring intracellular metabolic processes remains limited. In this work, PM10 sampled at residential area (urban background, UB) traffic-impacted location (roadside, RS) Portuguese city was comprehensively characterized in terms polycyclic aromatic hydrocarbons plasticizers. Epithelial lung cells (A549) were then exposed for 72 h organic extracts different biological outcomes assessed. UB RS dose-dependently decreased viability, induced reactive oxygen species (ROS), mitochondrial membrane potential, caused cycle arrest G0/G1 phase, modulated profile. Interestingly, sample, richer particularly toxic PAHs plasticizers, had greater impact than extract. Changes comprised significant increases glutathione, reflecting activation antioxidant defences counterbalance ROS production, together lactate, NAD+, ATP, which suggest stimulation glycolytic energy possibly compensate reduced activity. Furthermore, number other variations hinted changes turnover TCA dynamics, represent novel clues on potential effects.

Язык: Английский

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Theoretical and experimental investigations of time-dependent mass transfer mechanism of fine particulate matter under the sink effect

Separation and Purification Technology, Год журнала: 2022, Номер 292, С. 121027 - 121027

Опубликована: Апрель 7, 2022

Язык: Английский

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