N-nitrozodimetyloamina (NDMA) jako produkt ozonowania wodnych roztworów dimetyloaminy (DMA)

Andrzejewski, P.; Kasprzyk-Hordern, B.; Jeleń, H.; Nawrocki, J.

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Tytuł artykułu

N-nitrozodimetyloamina (NDMA) jako produkt ozonowania wodnych roztworów dimetyloaminy (DMA)

Autorzy

Andrzejewski P. , Kasprzyk-Hordern B. , Jeleń H. , Nawrocki J.

Treść / Zawartość

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Warianty tytułu

N-nitrosodimethylamine (NDMA) as a product of the ozonation of dimethylamine (DMA) containing water solutions

Języki publikacji

Abstrakty

Wykazano, że ozonowanie wodnych roztworów dimetyloaminy (DMA) prowadzi do tworzenia się N-nitrozodimetyloaminy (NDMA). Wydajność reakcji jest niska (promile w stosunku do wyjściowego stężenia DMA) i wzrasta wraz ze wzrostem pH. Innymi parametrami wpływającymi na wydajność reakcji są czas kontaktu, stosunek molowy ozonu do DMA i obecność akceptorów wolnych rodników. Dane literaturowe oraz wykryte produkty ozonowania DMA wskazują, że tworzenie się nitrozoaminy może być skutkiem reakcji nitrozowania dimetyloaminy przez azotyny, jakkolwiek nie można wykluczyć możliwości nitrozowania DMA przez inne związki nitrozujące. Reakcja ta może mieć istotne znaczenie w technologii oczyszczania wody przy założeniu obecności DMA w wodzie surowej na poziomie stężeń powyżej kilkudziesięciu ppb.

It has been demonstrated that the ozonation of dimethylamine (DMA) containing aqueous solutions gives rise to the formation of nitrosodimethylamine (NDMA). The yield of the reaction is low (per mille in relation to the initial DMA concentration) and increases with the pH; other contributory factors in the reaction yield being contact time, ozone/DMA molar ratio and the presence of scavengers. Literature data, as well as the detected products of DMA ozonation, suggest that the formation of nitrosamine should be attributed to the nitrozation of DMA with nitrites, although the potentiality for the nitrozation of DMA with other nitrozing compounds cannot be excluded. The reaction can be of major significance for the technology of water treatment, provided that the concentration of the DMA in raw water does not exceed several dozen ppb.

Słowa kluczowe

N-nitrozodimetyloamina NDMA dezynfekcja wody oczyszczanie wody

N-nitrosodimethylamine water disinfection water treatment

Wydawca

Polskie Zrzeszenie Inżynierów i Techników Sanitarnych, Oddział Dolnośląski

Czasopismo

Ochrona Środowiska

Rocznik

2007

Tom

R. 29, nr 4

Strony

11--17

Opis fizyczny

Bibliogr. 25 poz.

Twórcy

autor

Andrzejewski P.

autor

Kasprzyk-Hordern B.

autor

Jeleń H.

autor

Nawrocki J.

Uniwersytet im. A. Mickiewicza, Zakład Technologii Uzdatniania Wody, jaceknaw@amu.edu.pl

Bibliografia

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Typ dokumentu

Bibliografia

Identyfikator YADDA

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