Results 251 to 260 of about 206,852 (306)

Decomposition: Particulate Organic Matter

1991
Decomposition completes the biogeochemical cycles that photosynthesis initiates. Thus, complete decomposition results in the conversion of the organic (reduced) products of photosynthesis back into the inorganic (generally oxidized) constituents used as the reactants for photosynthesis (see Exercise 14).
Robert G. Wetzel, Gene E. Likens
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Electrostatic Method to Remove Particulate Organic Matter from Soil

Journal of Visualized Experiments, 2021
Estimations of soil organic carbon are dependent on soil processing methods including removal of undecomposed plant material. Inadequate separation of roots and plant material from soil can result in highly variable carbon measurements. Methods to remove the plant material are often limited to the largest, most visible plant materials.
Stewart B, Wuest, Catherine L, Reardon
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The organic constituents of atmospheric particulate matter

Atmospheric Environment (1967), 1976
Abstract The ether soluble fraction of atmospheric aerosol particles was separated into the following groups of compounds: organic acids and phenols, organic bases, aliphatic hydrocarbons, aromatic hydrocarbons and neutral compounds. These groups in turn were analyzed for individual constituents.
Grigorios Ketseridis, Jürgen Hahn, Ruprecht Jaenicke, Christian Junge   +3 more
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Particulate Organic Matter along the Northern Sea Route

Океанология, 2015
The comparative evaluation of the content of particulate organic carbon (POC) in surface seawater along the Northern Sea Route from Norway to the East Siberian Sea (the southern track) during the summer seasons of 2004–2011 was carried out based on the authors’ data. The content and distribution of organic component in particulate matter were estimated,
A. A. Vetrov, M. S. Ponyaev, N. A. Belyaev, E. A. Romankevich   +3 more
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Particulate matter–bound organic compounds: levels, mutagenicity, and health risks

Environmental Science and Pollution Research, 2022
Increased industrialization and consumption of fossil fuels in the Metropolitan Region of São Paulo (MRSP), Brazil, have caused a growth of the particulate matter emissions to the atmosphere and an increase in population health problems. Particulate and gaseous phase samples were collected in different short campaigns (2015, 2016, and 2017) near an ...
Sofia Caumo, Aleinnys B. Yera, Ana Vicente, Célia Alves, Deborah A. Roubicek, Pérola de Castro Vasconcellos   +5 more
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Polar organic fraction of air particulate matter

Journal of Chromatography A, 1979
Abstract Air particulate matter collected on glass-fibre filters was extracted with dichloromethane and subsequently with methanol. The methanol extract was derivatized and analysed by capillary-column gas chromatography and gas chromatography-mass spectrometry. About 20 components, mostly polyols, were identified. It is speculated that these polyols
E. Wauters, F. Vangaever, P. Sandra, M. Verzele   +3 more
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δ13C analyses of oceanic particulate organic matter

Marine Chemistry, 1973
Abstract Seventy-nine δ 13 C analyses of oceanic particulate matter (> 0· μ ) from semi-tropical (Gulf of Mexico, Caribbean and Atlantic) and polar (South Indian Ocean) waters showed that the carbon isotope composition of the particulate matter from the cold polar surface waters was lighter ( −24·7 to −26·0‰ ) than that from the surface in the ...
Brian J. Eadie, Lela M. Jeffrey
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Nano-plastics induce aquatic particulate organic matter (microgels) formation

Science of The Total Environment, 2020
The pervasive presence of plastic waste in the aquatic environment is widely viewed as one of the most serious environmental challenges for current and future generations. Microplastics ultimately degrade into nano and smaller-sizes. In turn, their biological and ecological impacts become more complicated and ambiguous.
Ruei-Feng Shiu, Carlos I. Vazquez, Yi-Yen Tsai, Gabriela V. Torres, Chi-Shuo Chen, Peter H. Santschi, Antonietta Quigg, Wei-Chun Chin   +7 more
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Coarse Particulate Organic Matter in Streams

1981
Coarse particulate organic matter (CPOM) has been defined as particulate organic matter >1 mm in size. Since its transport and movement in streams is the topic of another chapter in this book (Dance, Chapter 3), our discussion will mainly deal with such aspects as sources of CPOM, its processing and decomposition and importance as a food source to ...
Glen A. Bird, Narinder K. Kaushik
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Coarse Particulate Organic Matter Budgets

2005
An organic matter budget is a systematic account of organic matter inputs and outputs in an ecosystem or parts thereof. To construct a coarse particulate organic matter (CPOM) budget for a stream, CPOM inputs, outputs and storage can be measured according to methods described in other chapters of this book.
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