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

J 2009

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

WEBER, Jan; Romana KURKOVÁ; Jana KLÁNOVÁ; Petr KLÁN; Crispin J. HALSALL et. al.

Základní údaje

Originální název

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

Název česky

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

Autoři

WEBER, Jan; Romana KURKOVÁ; Jana KLÁNOVÁ; Petr KLÁN a Crispin J. HALSALL

Vydání

Environmental Pollution, UK, Elsevier, 2009, 0269-7491

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10401 Organic chemistry

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 3.426

Kód RIV

RIV/00216224:14310/09:00037009

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000272334500017

Klíčová slova anglicky

Photochemistry; Pesticides; Ice

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 9. 3. 2010 22:30, prof. RNDr. Petr Klán, Ph.D.

Anotace

ORIG CZ

V originále

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. The presence of oxons in ice following irradiation, demonstrates an additional formation mechanism of these toxicologically relevant compounds in cold environments, although further photodegradation of oxons in ice indicates that photochemistry of OPs might be an environmentally important sink in cold environments.

Česky

Článek popisuje studium degradací organofosforečných polutantů ve sněhu a ledu.

Návaznosti

MSM0021622412, záměr

Název: Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální, regionální a lokální úrovni (INCHEMBIOL) (Akronym: INCHEMBIOL)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální , regionální a lokální úrovni

Citovat

WEBER, Jan; Romana KURKOVÁ; Jana KLÁNOVÁ; Petr KLÁN a Crispin J. HALSALL. Photolytic degradation of methyl-parathion and fenitrothion in ice and water: Implications for cold environments. Environmental Pollution. UK: Elsevier, 2009, roč. 157, č. 12, s. 3308-3313. ISSN 0269-7491.

@article{852212,
   author = {Weber, Jan and Kurková, Romana and Klánová, Jana and Klán, Petr and Halsall, Crispin J.},
   article_location = {UK},
   article_number = {12},
   keywords = {Photochemistry; Pesticides; Ice},
   language = {eng},
   issn = {0269-7491},
   journal = {Environmental Pollution},
   title = {Photolytic degradation of methyl-parathion and fenitrothion in ice and water: Implications for cold environments},
   volume = {157},
   year = {2009}
}

TY  - JOUR
ID  - 852212
AU  - Weber, Jan - Kurková, Romana - Klánová, Jana - Klán, Petr - Halsall, Crispin J.
PY  - 2009
TI  - Photolytic degradation of methyl-parathion and fenitrothion in ice and water: Implications for cold environments
JF  - Environmental Pollution
VL  - 157
IS  - 12
SP  - 3308-3313
EP  - 3308-3313
PB  - Elsevier
SN  - 02697491
KW  - Photochemistry
KW  - Pesticides
KW  - Ice
N2  - 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. The presence of oxons in ice following irradiation, demonstrates an additional formation mechanism of these toxicologically relevant compounds in cold environments, although further photodegradation of oxons in ice indicates that photochemistry of OPs might be an environmentally important sink in cold environments.
ER  -

WEBER, Jan; Romana KURKOVÁ; Jana KLÁNOVÁ; Petr KLÁN a Crispin J. HALSALL. Photolytic degradation of methyl-parathion and fenitrothion in ice and water: Implications for cold environments. \textit{Environmental Pollution}. UK: Elsevier, 2009, roč.~157, č.~12, s.~3308-3313. ISSN~0269-7491.

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