Temporospatial variation and health risk assessment of trihalomethanes (THMs) in drinking water (northwest Iran)

Mosaferi, Mohammad, Asadi, Mehrdad, Aslani, Hassan, Mohammadi, Amir, Abedi, Sanaz, Nemati Mansour, Sepideh and Maleki, Shahram (2021) Temporospatial variation and health risk assessment of trihalomethanes (THMs) in drinking water (northwest Iran). Environmental Science and Pollution Research, 28. pp. 8168-8180. ISSN 1614-7499

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Abstract

Trihalomethanes (THMs) are one of the most common classes of disinfection by-products. In this study, the temporospatial trends and health risks due to exposure to THMs in the Tabriz water distribution network were investigated. THM series were analyzed using gas chromatography equipped with electron capture detector. The non-carcinogenic and carcinogenic risks due to exposure to THMs were calculated using Monte Carlo simulations. Mean concentrations of THMs in winter and spring were 10.2 ± 9.3 μg/l and 252 ± 185.9 μg/l, respectively. More than 80% of THMs identified were bromodichloromethane. The mean values of lifetime cancer risk (LTCR) of THMs were calculated as 4.23E−06 and 2.38E−04 for winter and spring, respectively. This study showed that there were noticeable levels of THMs in Tabriz water distribution network, especially in the center of the city. Although the non-cancer risk through THMs was below permissible recommended levels, the cancer risk likely remains due to high levels of THMs in some locations.

Item Type:	Journal Article
Keywords:	Disinfection by-products (DBPs), Water quality, Cancer, Monte Carlo simulations, Tabriz
Faculty:	Faculty of Science & Engineering
SWORD Depositor:	Symplectic User
Depositing User:	Symplectic User
Date Deposited:	16 Oct 2020 13:16
Last Modified:	17 Nov 2021 10:21
URI:	https://arro.anglia.ac.uk/id/eprint/705988

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