Chloride Methylation by Plant Pectin: An Efficient Environmentally Significant Process

Autor:	John T. G. Hamilton, Frank Keppler, Robert M. Kalin, W. Colin McRoberts, David B. Harper
Rok vydání:	2003
Předmět:	Biomass Poaceae Methylation Chloride chemistry.chemical_compound Chlorides Botany Ozone layer medicine Ecosystem Abiotic component Multidisciplinary Volatilisation Atmosphere Chemistry Chloromethane Temperature Water Wood Plant Leaves Atmospheric chemistry Environmental chemistry Methyl Chloride Pectins Terrestrial ecosystem Volatilization medicine.drug
Zdroj:	Science. 301:206-209
ISSN:	1095-9203 0036-8075
Popis:	Atmospheric chloromethane (CH 3 Cl) plays an important role in stratospheric ozone destruction, but many uncertainties exist regarding the strengths of its sources and sinks and particularly regarding the processes generating this naturally occurring gas. Evidence is presented here that CH 3 Cl is produced in many terrestrial environments by a common mechanism. Abiotic conversion of chloride to CH 3 Cl occurs readily in plant material, with the widespread plant component pectin acting as a methyl donor. Significant CH 3 Cl emissions from senescent and dead leaves were observed at ambient temperatures; those emissions rose dramatically when temperatures increased. This ubiquitous process acting in terrestrial ecosystems and during biomass burning could contribute the bulk of atmospheric CH 3 Cl.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48c4658d76b77cd206ba452614e16488 https://doi.org/10.1126/science.1085036 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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