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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F09%3A00037009" target="_blank" >RIV/00216224:14310/09:00037009 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 findingsto 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 &gt; 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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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 findingsto 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 &gt; 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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CC - Organická chemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Environmental Pollution

ISSN

0269-7491

e-ISSN

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Svazek periodika

157

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

000272334500017

EID výsledku v databázi Scopus

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