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Water Res


Title:"Occurrence, oral exposure and risk assessment of volatile organic compounds in drinking water for Izmir"
Author(s):Kavcar P; Odabasi M; Kitis M; Inal F; Sofuoglu SC;
Address:"Izmir Institute of Technology, Environmental Engineering MSc Program, Gulbahce, Urla 35430 Izmir, Turkey"
Journal Title:Water Res
Year:2006
Volume:20060822
Issue:17
Page Number:3219 - 3230
DOI: 10.1016/j.watres.2006.07.002
ISSN/ISBN:0043-1354 (Print) 0043-1354 (Linking)
Abstract:"Concentrations of volatile organic compounds (VOCs) were measured in the drinking water in Province of Izmir, Turkey, and associated health risks due to ingestion of these compounds were investigated using population weighted random samples. A total of 100 houses were visited in different districts of Izmir and drinking water samples were collected from consumers' drinking water source. Questionnaires were administered to one participant in each house to determine demographics and drinking water consumption rates. Oral exposure and risks were estimated for each participant and Izmir population by deterministic and probabilistic approaches, respectively. The four trihalomethane (THM) species (i.e., chloroform, bromodichloromethane, dibromochloromethane, and bromoform), benzene, toluene, p-xylene, and naphthalene were the most frequently detected VOCs with concentrations ranging from below detection limit to 35 microg/l. The risk estimates were found to be less than the values reported in the literature with few exceptions. Noncarcinogenic risks attributable to ingestion of VOCs for Izmir population were negligible, whereas the mean carcinogenic risk estimates for bromodichloromethane and dibromochloromethane were above the de minimis level of one in a million (10(-6)). For all VOCs, the concentrations measured in metropolitan area were greater than those in other districts. All THM species were detected in higher concentrations in tap water, whereas nontap water contained more benzene, toluene, p-xylene, and naphthalene. Therefore, the concentrations of the latter four compounds and associated risks increased with increasing income and education level since bottled water was used in larger proportions within these subgroups. The results of this study showed that oral exposure to drinking water contaminants and associated risks may be higher than the acceptable levels even if the concentrations fall below the standards"
Keywords:"Administration, Oral Body Weight *Environmental Exposure Humans Organic Chemicals/*analysis/toxicity Sensitivity and Specificity Surveys and Questionnaires Turkey Volatilization Water Pollutants, Chemical/*analysis/toxicity;"
Notes:"MedlineKavcar, Pinar Odabasi, Mustafa Kitis, Mehmet Inal, Fikret Sofuoglu, Sait C eng Research Support, Non-U.S. Gov't England 2006/08/25 Water Res. 2006 Oct; 40(17):3219-30. doi: 10.1016/j.watres.2006.07.002. Epub 2006 Aug 22"

 
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