About: Photolytic degradation of methyl-parathion and fenitrothion in ice and water: Implications for cold environments

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Here we investigate the photodegradation of structurally similar organophosphorus pesticides; methylparathion and fenitrothion in water (20 oC) and ice (-15 oC) under environmentally-relevant conditions with the aim of comparing these laboratory findings to limited field observations. Both compounds were found to be photolyzed more efficiently in ice than in aqueous solutions, with quantum yields of degradation being higher in ice than in water (fenitrothion > methyl-parathion). This rather surprising observation was attributed to the concentration effect caused by freezing the aqueous solutions. The major phototransformation products included the corresponding oxons (methyl-paraoxon and fenitroxon) and the nitrophenols (3-methyl-nitrophenol and nitrophenol) in both irradiated water and ice samples. Here we investigate the photodegradation of structurally similar organophosphorus pesticides; methylparathion and fenitrothion in water (20 oC) and ice (-15 oC) under environmentally-relevant conditions with the aim of comparing these laboratory findings to limited field observations. Both compounds were found to be photolyzed more efficiently in ice than in aqueous solutions, with quantum yields of degradation being higher in ice than in water (fenitrothion > methyl-parathion). This rather surprising observation was attributed to the concentration effect caused by freezing the aqueous solutions. The major phototransformation products included the corresponding oxons (methyl-paraoxon and fenitroxon) and the nitrophenols (3-methyl-nitrophenol and nitrophenol) in both irradiated water and ice samples. (en)
Title	Photolytic degradation of methyl-parathion and fenitrothion in ice and water: Implications for cold environments Photolytic degradation of methyl-parathion and fenitrothion in ice and water: Implications for cold environments (en)
skos:prefLabel	Photolytic degradation of methyl-parathion and fenitrothion in ice and water: Implications for cold environments Photolytic degradation of methyl-parathion and fenitrothion in ice and water: Implications for cold environments (en)
skos:notation	RIV/00216224:14310/09:00037009!RIV10-MSM-14310___
http://linked.open...avai/riv/aktivita	S Z
http://linked.open...avai/riv/aktivity	S, Z(MSM0021622412)
http://linked.open...iv/cisloPeriodika	12
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Klán, Petr Kurková, Romana Klánová, Jana
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Masarykova univerzita / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	333365
http://linked.open...ai/riv/idVysledku	RIV/00216224:14310/09:00037009
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Photochemistry; Pesticides; Ice (en)
http://linked.open.../riv/klicoveSlovo	Ice Pesticides Photochemistry
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[1282AE74E05C]
http://linked.open...i/riv/nazevZdroje	Environmental Pollution
http://linked.open...in/vavai/riv/obor	CC
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	157
http://linked.open...iv/tvurceVysledku	Klánová, Jana Klán, Petr Kurková, Romana Weber, Jan Halsall, Crispin J.
http://linked.open...ain/vavai/riv/wos	000272334500017
http://linked.open...n/vavai/riv/zamer	Interactions among the chemicals, environment and biological systems and their consequences on the global, regional and local scales (INCHEMBIOL)
issn	0269-7491
number of pages	6 (xsd:int)
http://localhost/t...ganizacniJednotka	14310
is http://linked.open...avai/riv/vysledek of	Photolytic degradation of methyl-parathion and fenitrothion in ice and water: Implications for cold environments Photolytic degradation of methyl-parathion and fenitrothion in ice and water: Implications for cold environments Photolytic degradation of methyl-parathion and fenitrothion in ice and water: Implications for cold environments Photolytic degradation of methyl-parathion and fenitrothion in ice and water: Implications for cold environments

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