Tropospheric gas at potentially toxic levels in air
نویسندگان
چکیده
منابع مشابه
Air Pollution and Tropospheric Processes
Nonmethane hydrocarbons (NMHCs) play an important role in the atmosphere. Photochemical oxidation of hydrocarbons leads to ozone (O3), organic acid, and carbon dioxide (CO2) production, with major implications for local and regional air quality, acid deposition, and the greenhouse effect. In addition, emissions of atmospheric NMHCs lead to an increased aerosol loading, which has major implicati...
متن کاملChanges in tropospheric composition and air quality.
Reductions in stratospheric ozone (O3) cause increased penetration of ultraviolet-B (UV-B) radiation to the troposphere, and therefore increases in the chemical activity in the lower atmosphere (the troposphere). Tropospheric ozone levels are sensitive to local concentrations of nitrogen oxides (NOx) and hydrocarbons. Model studies suggest that additional UV-B radiation reduces tropospheric ozo...
متن کاملEvaluation of Potentially Toxic Elements Pollution Indices in Rangeland Northwest of Chadegan city (Isfahan Province)
Abstract Today, the pollution of Rangeland soils by various destructive pollutants has become one of the human-environmental problems. Lacking proper management of organic matter discharge can also increase the concentration of salts, heavy metals, and pathogenic microorganisms. In this study, to investigate and measure the concentration of toxic elements, 128 soil samples of Chadegan region w...
متن کاملAir Toxic Concentrations: Response
more detailed explanation of the basis for MCIA's position. Woodruff et al. (1) incorrectly suggest that industrial air emissions of methyl chloride present a significant health risk. On the basis of 1990 data for the Toxics Release Inventory (TRI) and the Cumulative Exposure Project (CEP), Woofruff et al. purport to identify listed hazardous air pollutants (HAPs) that are present in the enviro...
متن کاملCriteria air pollutants and toxic air pollutants.
This review presents a brief overview of the health effects and exposures of two criteria pollutants--ozone and particulate matter--and two toxic air pollutants--benzene and formaldehyde. These pollutants were selected from the six criteria pollutants and from the 189 toxic air pollutants on the basis of their prevalence in the United States, their physicochemical behavior, and the magnitude of...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Eos, Transactions American Geophysical Union
سال: 2012
ISSN: 0096-3941
DOI: 10.1029/2012eo340011