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Decomposition of Fine Particulate Organic Matter
2020Fine particulate organic matter (FPOM) ranges in size from 0.45 μm to 1 mm. It serves as an important food source for aquatic fauna, as a substrate for heterotrophic microorganisms, and as a carrier of nutrients, metals and other chemicals. In streams, FPOM is derived from leaf litter, algae and other organisms by physical, chemical, and biological ...
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Analysis of Organic Particulate Matter
1995The organic fraction of airborne particulate matter contains hundreds or even up to thousands of chemical components of natural and anthropogenic origin. Many of them have received considerable attention in recent years due to their adverse health effects.
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Mechanical Grinding for Particulate Organic‐Matter Analysis
Communications in Soil Science and Plant Analysis, 2008Abstract Particulate organic matter (POM) is recognized as a valuable measure of labile soil organic matter. The method usually requires hand‐sieving through a 2‐mm sieve. Hand‐sieving has not been widely adopted by soil testing laboratories, where samples are generally mechanically ground. Composites of 20–25 cores (2×15 cm) were collected from a long‐
Steven B. Mirsky +2 more
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Peer Reviewed: Options for Characterizing Organic Particulate Matter
Environmental Science & Technology, 1999New research strategies could help elucidate the mechanisms and causes of aerosol health effects.
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Photodissolution of particulate organic matter from sediments
Limnology and Oceanography, 2006Irradiation of particulate organic matter (POM) at light intensities found at the earth's surface should induce reduction in molecular weight, as found for dissolved organic matter, and hence result in transfer to the dissolved phase. We studied Mississippi River suspended sediments to test if photodissolution can induce losses of POM similar to those ...
Lawrence M. Mayer +3 more
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Carbon of Particulate Organic Matter
1984At present the particulate material, one of the components of which in natural waters is OM, is assumed to comprise that part of OM which is retained in the filters with 0.45 – 1 µm pore size or in separators. Large OM particles in natural waters are present in an extremely scattered state and are usually not to be found in filtration particulate ...
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Photochemical Production of Singlet Oxygen from Particulate Organic Matter
Environmental Science & Technology, 2015Dissolved organic matter is established as one of the most relevant photosensitizers in aquatic environments, producing singlet oxygen (1O2) alongside other photochemically produced reactive intermediates. While the production of 1O2 from DOM has been well studied, the relative importance of particulate organic matter (POM) to the overall 1O2 ...
Appiani Elena, McNeill Kristopher
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Interactions with Ligands, Particulate Matter and Organisms
1984A rough description of the occurrence and behaviour of trace metals in aquatic and terrestrial systems is presented in Fig. 5. In the aquatic environment four abiotic reservoirs are distinguished: the suspended matter, the sediments, the surface waters and the pore waters. These four reservoirs strongly interact with each other.
Wim Salomons, Ulrich Förstner
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Particulate Organic Matter in Sea Water
1971Publisher Summary The non-living organic matter in sea water is derived from a variety of plant sources, including phytoplankton, attached aquatic vegetation in shallow waters, macroscopic pelagic algae, and waterborne and windborne materials of terrestrial origin. The relative importance of these various sources cannot be stated precisely, but there
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Atmospheric organic particulate matter: From smoke to secondary organic aerosol
Atmospheric Environment, 2009We present an overview of the development of our understanding of the sources, formation mechanisms, physical and chemical transformations of atmospheric organic aerosol (OA) during the last thirty years. Until recently, organic particulate material was simply classified as either primary or secondary with the primary component being treated in models ...
Neil M. Donahue +2 more
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