Nitrozoaminy - nowe uboczne produkty dezynfekcji wody

Nawrocki, J.

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Nitrozoaminy - nowe uboczne produkty dezynfekcji wody

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Nawrocki J.

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Nitrosamines - Troublesome by-products of water disinfection

Języki publikacji

Abstrakty

W ostatnich latach uboczne produkty utleniania zawierające azot budzą istotne zainteresowanie ze względu na ich niepożądane właściwości toksykologiczne, mutagenne czy też kancerogenne. W pracy przedstawiono stan wiedzy na temat mechanizmów tworzenia oraz analityki nitrozoamin (w szczególności nitrozodimetyloaminy - NDMA) w wodzie wodociągowej i ściekach. Ponieważ nitrozoaminy należą do związków o działaniu kancerogennym, dlatego doniesienia na ten temat śledzone są z wielką uwagą nie tylko przez naukowców, ale także przez producentów wody przeznaczonej do spożycia. W pracy podkreślono kontrowersje wokół mechanizmu tworzenia NDMA, która występuje głównie w wodach poddanych chloraminowaniu. Wskazano również na inne procesy utleniania, będące potencjalnymi źródłami nitrozoamin. Przedstawiono także współczesne poglądy na temat usuwania powstałych nitrozoamin oraz metody ich analizy.

Owing to their undesired toxicological, mutagenic and/or carcinogenic properties, nitrogen-containing water disinfection by-products have recently become a matter of growing concern. This paper provides not only a review of recent knowledge about the mechanisms underlying the formation of nitrosamines (specifically nitrosodimethylamine, NDMA) in tap water and wastewaters, but also an account of the methods that are in use for their analysis. Since nitrosamines are classified as carcinogenic species, any report on relevant issues is examined with great interest by both scientists and potable water producers. The paper specifies the controversies about the mechanisms governing the formation of NDMA, a species occurring primarily in water that has been made subject to chloramination. Consideration is also given to other oxidation processes regarded as potential contributors to the formation of nitrosamines. In addition, the paper summarizes the latest views and opinions regarding the removal of, and the analytical methods for, the nitrosamines formed.

Słowa kluczowe

nitrozoaminy NDMA oczyszczanie wody dezynfekcja

nitrogen compounds nitrosamines water treatment disinfection

Wydawca

Polskie Zrzeszenie Inżynierów i Techników Sanitarnych, Oddział Dolnośląski

Czasopismo

Ochrona Środowiska

Rocznik

2007

Tom

R. 29, nr 3

Strony

13--18

Opis fizyczny

Bibliogr. 54 poz.

Twórcy

autor

Nawrocki J.

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

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