Przyczyny występowania zwiększonych ilości aldehydów w wodach powierzchniowych

• Autorzy: Dąbrowska A.

Warianty tytułu

EN

Possible reasons for elevated aldehyde levels in surface waters

• Języki publikacji: PL

Abstrakty

PL

Aldehydy należą do grupy związków organicznych występujących powszechnie w środowisku naturalnym. Przeprowadzone badania wykazały, że suma aldehydów wymywanych z troposfery przez opady atmosferyczne może osiągać nawet wartość 2800 mg/m³. Stwierdzono, że w wodach powierzchniowych średnia zawartość aldehydów była kilkakrotnie mniejsza niż w opadach atmosferycznych, lecz w sezonie stratyfikacji termicznej w warstwie metalimnionu jezior ilość aldehydów znacząco wzrastała. W czasie wegetacji roślin odnotowano wyraźne zwiększenie zawartości nonanalu i dekanalu w wodach powierzchniowych. Wykazano, że formaldehyd, acetaldehyd, propanal, glioksal i metyloglioksal należą do grupy aldehydów najczęściej identyfikowanych w środowisku wodnym.

EN

Aldehydes are organic compounds widely present in natural environment. The studies performed demonstrated that total content of aldehydes washed out from the troposphere by precipitation may amount to 2800 mg/m³. The average aldehyde content in surface waters was a few times lower than in rainwater. However, during thermal stratification season (spring and summer) aldehyde concentration in the metalimnion of lakes significantly increased. A significant increase in concentration of nonanal and decanal in surface waters was recorded during plant vegetation period. Formaldehyde, acetaldehyde, propanal, glyoxal, and methylglyoxal were found to be the most frequently identified aldehydes in aqueous environment.

Słowa kluczowe

PL

jakość wody; związki karbonylowe; ogólny węgiel organiczny; opady

EN

water quality; carbonyl compounds; total organic carbon (TOC); precipitation

• Wydawca: Polskie Zrzeszenie Inżynierów i Techników Sanitarnych, Oddział Dolnośląski
• Czasopismo: Ochrona Środowiska
• Rocznik: 2013
• Tom: Vol. 35, nr 3
• Strony: 13--16
• Opis fizyczny: Bibliogr. 26 poz.

Twórcy

autor

Dąbrowska A.

• Uniwersytet im. Adama Mickiewicza, Wydział Chemii, Zakład Technologii Uzdatniania Wody, ul. Umultowska 89b, 61-614 Poznań

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