Monitoring and Risk Assessment of Disinfection By-products Found in Chlorinated Drinking Water in Korea
- Monitoring and Risk Assessment of Disinfection By-products Found in Chlorinated Drinking Water in Korea
- 황선혜; 권운용; 김현구; 김태승; 김승기; 최종호; 표희수
- Chlorination; Disinfection by-products; Monitoring; Risk Assessment
- Issue Date
- VOL 13, NO 1, 11-20
- Many disinfection by-products were produced during the chlorination of drinking water. By the law, disinfection
by-products should be maintained at low level due to their potential toxicity. In this study, we conducted
the monitoring of 34 treated water samples collected from water treatment facilities in Han river, Keum
river, Nakdong river and Youngsan river from year 2000 to 2008 to quantify disinfection by-products (DBPs)
such as trihalomethanes (THMs). Analytical results of total DBPs in four Korean rivers showed that Nakdong
river's detection frequency accounted for 72.06% of the total number and its average concentration was 2.54
ng/mL. Regarding seasonal variations, winter detection frequency was 66.91% and average concentration was
2.49 ng/mL in Summer. Lastly, the human risk assessment was performed. Dichlorobromomethane (DCBM)
total excess cancer risk (ECR) was chloroform (CF) total hazard quotient (HQ) of Nakdong river was 9.71×10-6 and
1.05×10-1, respectively. The result of human risk assessment on DBPs for the past nine years showed the
dirinking water safe because it was less than the WHO's guideline.
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