نتایج جستجو برای: ozone precursors
تعداد نتایج: 59104 فیلتر نتایج به سال:
Background and Purpose: Ozone is an inorganic molecule with effective antimicrobial properties. Clinical treatment of ozonated water was used for the elimination of Candida albicans, Enterococcus faecalis, endotoxins, and biofilms from root canals. In addition, its therapeutic effects for tinea pedis, ulcers, and leishmaniasis were investigated. The purpose of the present study was to evaluate ...
Enhanced volatile organic compounds (VOCs) observations were made on ozone-exceeding days in June 2020 Linyi, China. A total of 69 VOCs collected (1 alkyne, 29 alkanes, 10 alkenes, 14 aromatic hydrocarbons, and 15 oxygenated (OVOCs)). The average concentration (TVOCs) was 36.0 ± 0.66 ppb, the top three components OVOCs, which accounted for 40.75%, 27.02%, 11.30%, respectively. Based positive ma...
UV radiation is an essential driver for the formation of photochemical smog, which includes ground-level ozone and particulate matter (PM). Recent analyses support earlier work showing that poor outdoor air quality is a major environmental hazard as well as quantifying health effects on regional and global scales more accurately. Greater exposure to these pollutants has been linked to increased...
[1] The effects of climate change on ozone and PM 2.5 concentrations over the eastern United States were investigated using the Global-Regional Coupled Air Pollution modeling System (GRE-CAPS). GRE-CAPS consists of the Goddard Institute for Space Studies (GISS) II' general circulation model with aerosol processes and ozone chemistry, the fifth-generation PSU/NCAR mesoscale model (MM5) regional ...
High hourly concentrations of ozone, a secondary pollutant produced from the photochemical reactions primary precursors, have been increasing in South Korea, bringing potential adverse effects on vegetation. Deforestation caused by high ozone has investigated China and Japan. Using measurements East West, Gangwon Province, 2001 to 2018, this study compared changes surface analyzed influences me...
Nitrosamine formation has been associated with wastewater-impacted waters, but specific precursors within wastewater effluents have not been identified. Experiments indicated that nitrosamines form in low yields from quaternary amines, and that the nitrosamines form from the quaternary amines themselves, not just lower order amine impurities. Polymeric and benzylated quaternary amines were more...
In this study, an attempt was made to simulate the air quality with reference to ozone over the Jackson (Mississippi) region using an online WRF/Chem (Weather Research and Forecasting-Chemistry) model. The WRF/Chem model has the advantages of the integration of the meteorological and chemistry modules with the same computational grid and same physical parameterizations and includes the feedback...
[1] Airborne formaldehyde (CH2O) measurements were made by tunable diode laser absorption spectroscopy (TDLAS) at high time resolution (1 and 10 s) and precision (±400 and ±120 parts per trillion by volume (pptv) (2s), respectively) during the Texas Air Quality Study (TexAQS) 2000. Measurement accuracy was corroborated by in-flight calibrations and zeros and by overflight comparison with a grou...
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