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| 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
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Received: April 28, 2016; Revised: May 16, 2016; Accepted: July 8, 2016. Published online: July 31, 2016. |
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| ABSTRACT |
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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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