Organics in environmental ices: sources, chemistry, and impacts
نویسندگان
چکیده
منابع مشابه
Organics in environmental ices: sources, chemistry, and impacts
The physical, chemical, and biological processes involving organics in ice in the environment impact a number of atmospheric and biogeochemical cycles. Organic material in snow or ice may be biological in origin, deposited from aerosols or atmospheric gases, or formed chemically in situ. In this manuscript, we review the current state of knowledge regarding the sources, properties, and chemistr...
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William R. Simpson,*,† Steven S. Brown,‡ Alfonso Saiz-Lopez, Joel A. Thornton, and Roland von Glasow †Department of Chemistry and Biochemistry and Geophysical Institute, University of Alaska Fairbanks, Fairbanks, Alaska 99775, United States ‡NOAA ESRL Chemical Sciences Division, Boulder, Colorado 80305-3337, United States Atmospheric Chemistry and Climate Group, Institute of Physical Chemistry ...
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This review article focused on the current status of mercury (Hg) contamination in different ecological compartments in China, and their possible environmental and health impacts, focusing on some major cities. Mercury emission from non-ferrous metals smelting (especially zinc smelting), coal combustion and miscellaneous activities (of which battery and fluorescent lamp production and cement pr...
متن کاملRadiation chemistry in ammonia-water ices.
We studied the effects of 100 keV proton irradiation on films of ammonia-water mixtures between 20 and 120 K. Irradiation destroys ammonia, leading to the formation and trapping of H(2), N(2), NO, and N(2)O, the formation of cavities containing radiolytic gases, and ejection of molecules by sputtering. Using infrared spectroscopy, we show that at all temperatures the destruction of ammonia is s...
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Context. Gas-phase complex organic molecules are commonly detected in the warm inner regions of protostellar envelopes, so-called hot cores. Recent models show that photochemistry in ices followed by desorption may explain the observed abundances. There is, however, a general lack of quantitative data on UV-induced complex chemistry in ices. Aims. This study aims to experimentally quantify the ...
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ژورنال
عنوان ژورنال: Atmospheric Chemistry and Physics
سال: 2012
ISSN: 1680-7324
DOI: 10.5194/acp-12-9653-2012