Atmospheric Pollution Research, Год журнала: 2024, Номер 15(9), С. 102227 - 102227
Опубликована: Июнь 18, 2024
Язык: Английский
Food Chemistry, Год журнала: 2023, Номер 425, С. 136485 - 136485
Опубликована: Июнь 1, 2023
Язык: Английский
Процитировано
22
Atmosphere, Год журнала: 2023, Номер 14(2), С. 305 - 305
Опубликована: Фев. 3, 2023
The thoracic fraction of road dust (PM10) was measured for the first time in Portugal parking areas, both outdoors and indoors, with aim completing existing studies carried out active lanes various roads. An situ resuspension chamber used to collect a total 23 samples three areas Aveiro, whilst laboratory procedures included determination carbonaceous content (OC EC) by thermo-optical technique, elemental composition ICP-MS ICP-OES after acid digestion, Aliivribrio fisherii bioluminescent bacteria ecotoxicity bioassay. Dust loadings (DL10) obtained were 18.5 ± 9.8 mg PM10 m−2, outdoor parking, 1.8–23.7 m−2 indoor corresponding emission factors 476 75–589 veh−1 km−1, respectively. OC represented 9–30 % areas. However, samples, high iron oxide jeopardised OC-EC separation. In those carbonates accounted 10.0 3.3% mass. analysis components focused on major elements (Al, Ca, Fe, K, Mg) as well minor elements. mass element oxides 27.1% (outdoor) 23.6–34.3% (indoor). ΣPAH calculated all 8.38–36.9 μg g−1 PM10. ecotoxicological bioassay showed that aqueous solutions toxic bacteria, whereas no clear correlations could be made specific component groups, exception EC50.
Язык: Английский
Процитировано
18
Energy and Buildings, Год журнала: 2024, Номер 309, С. 114058 - 114058
Опубликована: Март 5, 2024
Язык: Английский
Процитировано
8
Chemosphere, Год журнала: 2021, Номер 288, С. 132376 - 132376
Опубликована: Сен. 29, 2021
Saccharides are omnipresent compounds in terrestrial and marine ecosystems. Since the 2000s, their role environmental geochemical studies has significantly increased, but only anhydrosaccharides (mainly levoglucosan) have been reviewed. Here we present wider knowledge about saccharides organic matter of aerosols, bottom sediments, soils, dust, sedimentary rocks. The main purpose here is to characterize possible sources saccharides, as well sacharol formation, seasonal variability, applications paleoenvironmental interpretations. Different saccharide were designated, including biomass burning, particulate such pollen, spores, lichen, fungi, polysaccharide decomposition inputs monosaccharides. focus was on most common encountered samples These mono- disaccharides glucose, fructose, sucrose, trehalose, sacharols arabitol mannitol. levoglucosan, mannosan, galactosan evaluated ancient wildfire indicators industrialization tracers found lacustrine sediments starting from Pleistocene contemporary deposits. However, other like xylosan arabinosan also products fossil wood burning. potential be further hemicellulose Additional recommendations proposed for future research, topics that need addressed.
Язык: Английский
Процитировано
40
Building and Environment, Год журнала: 2021, Номер 207, С. 108448 - 108448
Опубликована: Окт. 18, 2021
The current study investigated the emission, distribution, and removal of cooking-emitted particles in simulated residential module Well Living Lab. Cooking experiments were conducted following a standardized protocol under different interventions. consisted frying bacon that emitted 2.35 × 103 (2.22 103) μg/min PM2.5. Interventions studied included: Ventilation; combination Ventilation Stove Hood; Portable Air Cleaners; Flush; Flush, Hood, Bathroom Exhaust. impact door configuration was also assessed. Particulate Matter (PM2.5) CO2 sensors distributed all spaces. A method based on traced decay used to characterize airflow. Particle rate integrated PM2.5 concentration compare capability interventions removing reducing particle exposure. Hood Exhaust showed best performance particles. Removal Rate most effectively removed by Cleaners. Flush not very effective even with 2.5 times increase supply flow (4 h−1 module). Closing bedroom and/or bathroom doors changed distribution increased kitchen living room.
Язык: Английский
Процитировано
34
Atmospheric Research, Год журнала: 2023, Номер 294, С. 106977 - 106977
Опубликована: Авг. 25, 2023
Road dust resuspension in urban environments can be both a means of transport pollutants across the various environmental compartments and source itself, becoming potential threat to human health. With aim obtaining emission factors achieving detailed chemical characterisation road (RD) typical Portuguese cities, sampling campaign was performed region Aveiro. Locations were chosen for intercomparison with different land uses, from busier city centre university campus residential neighbourhoods harbour-commercial areas industrial activities. PM10 samples analysed organic elemental carbon (OC EC) by thermal-optical technique, composition PIXE, speciation GC–MS, ecotoxicology luminescence inhibition bioassay Aliivibrio fischeri. A health risk assessment elements PAHs carried out. Dust loadings 1.9 ± 1.8 mg m−2 registered overall, whereas most trafficked they reached more than three times average. OC accounted 6.5–15.5% total PM10, but element oxides represented largest mass fraction (61.4 8.6%). strong enrichment detected mostly traffic-related such as Cu, Zn, As, Br, Cr, Ni Mo interestingly, Rb Se. The compounds 3.66–11.0 g−1 including aliphatics, clear dominance plasticisers. Some other attributed non-vehicle sources, fatty acid alkyl esters, also detected. As concerns 16 priority PAHs, their concentration ranged 5.58 36.3 μg variability between spots. All caused an ecotoxicological reaction bioassay, harbour commercial proved toxic.
Язык: Английский
Процитировано
14
Energy and Built Environment, Год журнала: 2024, Номер 6(3), С. 432 - 447
Опубликована: Янв. 9, 2024
The emission of oil fume particles during kitchen cooking processes constitutes a significant factor that impacts indoor air quality and human health. Range hoods, as indispensable ventilation devices in kitchens, play crucial role reducing particle concentrations. This study employs combined approach orthogonal experiments computational fluid dynamics simulations to investigate the exhaust characteristics inherent-angle-measurement-based range hoods. It analyzes diffusion patterns cooking-generated particulate matter under various scenarios, considering factors such opening closing windows, source velocities, different airflow rates hood. Based on organization patterns, supplementary system is designed. rationality effectiveness are analyzed establish an effective control scheme for environments. simulated research results indicate disperse along inclined surface side-draft hood, resulting higher pollutant concentrations breathing zone compared zone. Increasing rate hood enhances capture efficiency by 9.8%. induced generated windows improves 12.9%. However, when velocity window-induced exceeds 1.5m/s, it hampers promotion efficiency. In case being unconditionally open, implementing ceiling-mounted supply effectively kitchen's concentration, achieving maximum 97.66%. When can be opened, setting baffle simulation revealed with angle 120° length 0.3m, concentration increased 34.59%. achieved standard limit requirement 50µg/m3, thus meeting requirements.
Язык: Английский
Процитировано
6
The Science of The Total Environment, Год журнала: 2021, Номер 782, С. 146820 - 146820
Опубликована: Март 29, 2021
Язык: Английский
Процитировано
28
Environmental Pollution, Год журнала: 2021, Номер 289, С. 117847 - 117847
Опубликована: Июль 26, 2021
Язык: Английский
Процитировано
28
Hygiene and Environmental Health Advances, Год журнала: 2022, Номер 5, С. 100038 - 100038
Опубликована: Ноя. 19, 2022
Household air pollution has been identified as a global threat in recent decades. The partial combustion of solid fuel is leading reason for indoor middle- and low-income countries estimated to cause around 3.5 million death per year globally. Women become the most vulnerable these household due their exceptional physical possessions higher exposure duration. current study aims identify possible conditions women. starts with questionnaire survey assess health-related issues distinguishing women further sampling pollutants kitchen area different homes (n=10) bifurcated on basis nature family. Further, concentration obtained was utilized health risk assessment using ICRP MPPD modelling techniques. trend observed shows particulate matter joint family kitchens. According highest deposition determined PM2.5 fraction distributed 55.9% head region, 6.7% tracheobronchial region 37.2% pulmonary region. lowest PM0.5 (61.1%) followed by region(21.45%) (17.3%). Precisely, present gives clear picture about lung an setting specifically Also, it throws light upon sources scenarios regarding prevailing among population.
Язык: Английский
Процитировано
20