Identification of transformation products during Doxylamine chloramination for NDMA mitigation

B. Coskun*, N. Bilgin-Saritas, E. Aydin, E. Pehlivanoglu-Mantas

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1 Atıf (Scopus)

Özet

N-nitrosodimethylamine (NDMA) is a disinfection byproduct that forms at the presence of an organic nitrogen precursor. Doxylamine, an antihistaminic pharmaceutical, is a precursor of NDMA and has been shown to form NDMA in the presence of chloramine. In this study, the effect of Doxylamine as an NDMA precursor has been further studied during chloramination. The end product and byproducts during chloramination were investigated using a high-resolution mass spectrometer by taking samples at different time intervals. Results suggest that NDMA is not the only end product forming during chloramination of Doxylamine and several transformation products that do not end up as NDMA may form. A group of these transformation products have been selected based on their relative amounts during chloramination with time and notated as Focus Tentative Transformation Products (FTTPn). The identification of these byproducts will make it easier to study the conditions during chloramination that may favour these ‘known’ transformation products with the use of less sophisticated analytical instruments. Then, it might lead to the establishment of chloramination protocols that will minimise the formation of NDMA from its precursors.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)1024-1039
Sayfa sayısı16
DergiEnvironmental Technology (United Kingdom)
Hacim45
Basın numarası6
DOI'lar
Yayın durumuYayınlandı - 2024

Bibliyografik not

Publisher Copyright:
© 2022 Informa UK Limited, trading as Taylor & Francis Group.

Finansman

This work was funded by the Scientific and Technological Research Council of Turkey (TUBITAK, Project # 115Y472).

FinansörlerFinansör numarası
Türkiye Bilimsel ve Teknolojik Araştırma Kurumu115Y472

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