Evaluation of Atmospheric Impacts of Selected Coatings Voc Emissions and Environmental Chamber Studies of Voc Species in Architectural Coatings and Mobile Source Emissions
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Synthesis and Application of Heterocyclic as ultraviolet Absorbers
The lifespan of organic coatings is reduced in outdoor applications by attacks of solar radiation, oxygen and atmospheric pollutants. Degradation of coating and recoating introduce pollutants into the environment. For solvent base coatings like alkyd paints volatile organic compounds (VOC) are main source of pollution. Undesirable mechanical, physical and chemical consequences of the resulting ...
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An environmental chamber and modeling study was conducted to reduce uncertainties in atmospheric ozone impacts for volatile organic compounds (VOCs) emitted from coatings. Some coatings VOCs (Texanol® and low-aromatic petroleum distillates) have near-zero or negative incremental ozone reactivities in chamber experiments, but calculations show positive ozone impacts in the atmosphere. Modeling i...
متن کاملImproved Reactivity Estimates for Volatile Organic Compounds Used in Architectural Coatings
The College of Engineering Center for Environmental Research and Technology (CE-CERT) proposes expand the scope of our existing three-year California Air Resources Board (CARB) agreement 00-333 to carry out the additional work needed to reduce the uncertainties in estimating the impacts of architectural coatings emissions on photochemical ozone formation and other measures of air quality. The s...
متن کاملEnvironmental Chamber Studies of Voc Species in Architectural Coatings and Mobile Source Emissions
Environmental chamber experiments were carried out to assess the atmospheric ozone and particle matter (PM) impacts of selected representative VOCs emitted from architectural coatings. The UCR EPA environmental chamber was employed for the ozone and PM impact experiments, and most consisted of incremental reactivity experiments carried out at NO x levels of 25-30 ppb and at ambient surrogate RO...
متن کاملModeling Diffusion-controlled Emissions of Volatile Organic Compounds from Building Materials
The adverse effects of contaminated outdoor air have been recognized and subject to control for many years. More recently environmental engineers and health professionals have become cognizant of the hazards associated with contaminated indoor air. It is now understood that contaminated indoor air negatively impacts human health, worker productivity, and physical property. Volatile organic comp...
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تاریخ انتشار 2004