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J Korean Soc Environ Eng > Volume 38(7); 2016 > Article
J Korean Soc Environ Eng 2016;38(7): 371-376. doi: https://doi.org/10.4491/KSEE.2016.38.7.371
갱생 옥내급수관 수돗물에서 비스페놀-A 분포 및 위해성 평가
정관조, 손보영, 이인자, 안치화, 김준일, 문보람, 이수원, 안재찬, 김복순, 정득모
서울특별시 서울물연구원
Distribution and Risk Assessment of Bisphenol-A in Tap Water from Rehabilitated Indoor Water Service Pipe
Gwanjo Jeong, Boyoung Son, Inja Lee, Chihwa Ahn, Junil Kim, Boram Moon, Suwon Lee, Jaechan Ahn, Bogsoon Kim, Deukmo Chung
Seoul Water Institute, Seoul Metropolitan Government
Corresponding author  Gwanjo Jeong ,Tel: 02-3146-1761, Fax: 02-3146-1759, Email: jgj730@seoul.go.kr
Received: April 28, 2016;  Revised: May 16, 2016;  Accepted: July 8, 2016.  Published online: July 31, 2016.
ABSTRACT
In this study, the survey of bisphenol-A in indoor water service pipes rehabilitated with epoxy resin was conducted and the risk assessment was done to investigate the effect on the human health to drink tap water. Bisphenol-A in raw water was detected in a range of 50~118 ng/L in all samples, where the limit of quantification was 10 ng/L. This is caused by inflow of the sewage effluent or the tributaries of the surrounding area containing bisphenol-A. Bisphenol-A was not detected in finished water after the advanced water treatment process. It was achieved by its removal from the processes of flocculation-precipitation and oxidation of ozone and chlorine and by being changed to other by-product materials. For the indoor water service pipe, bisphenol-A was not detected in all cases which was not coated with epoxy resin. However, when epoxy resin is lined within the indoor water service pipe, bisphenol-A was identified at maximum level of 521 ng/L and was detected above the limit of quantitation at 68 percentages of all samples. The Hazard Quotient (HQ) at the maximum level (521 ng/L) of the detected bisphenol-A is 0.004, which is less than the reference value of 0.1 for the tap water intake. Therefore, it is considered that the detected levels of bisphenol-A in this study would be safe to drink tap water.
Key Words: Bisphenol-A, Risk Assessment, Indoor Water Service Pipe, Hazard Quotient
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