https://www.itqb.unl.pt/~imartins/Czaplicka_2004.pdf

Sources and transformations of chlorophenols in the natural environment.

Interest in the global tropospheric chemistry of organic materials has been growing rapidly over the past decade. In addition to a basic concern about the fundamental biogeochemical cycles of organic matter, this interest has arisen largely because of concern about the oxidant-forming potential of natural hydrocarbons, the possible importance of nonmethane hydrocarbons as a source for atmospheric CO, and the role played by organic material in the formation of secondary aerosol particles. In this review we consider the information presently available on concentration distribution, sources, sinks, and atmospheric transformation reactions of organic matter in the global troposphere. The data base for tropospheric organic compounds is very small. However, it is apparent that while anthropogenic sources often dominate the atmospheric chemistry of organic material in urban and near-urban air, a key to understanding the global cycling of tropospheric organic substances is a clear understanding of the interaction of the atmosphere with the terrestrial and marine biosphere.

Organic material in the global troposphere

Lipid class compounds have been used as source markers to ascertain the terrestrial, marine, or anthropogenic origin of atmospheric aerosols from rural continental and coastal oceanic environments1–11 However, there are only limited data on the composition and source of lipids in remote marine aerosols Studies off the West African coast suggest that surface waxes of terrestrial vascular plants are a major source of lipid class compounds in dust samples6,11 Uniform concentrations of lipids found7,10 in aerosols from urban, rural and oceanic regions imply either a long residence time for continental material or a uniform production rate of the compounds over the oceans It has also been concluded1–3,8 that oceanic aerosols have significant marine sources However, previous organic chemical studies have not been conducted in conjunction with other chemical analyses of the aerosols or with climatological and meteorological studies We report here, as part of the Sea/Air Exchange Program (SEAREX), the temporal variation of the transport of continentally-derived lipids (hydrocarbons, fatty alcohols and fatty acids) to the central tropical North Pacific

L.A. Guzman

Papers

Comparison between the organic fraction of suspended matter at a background and an urban station