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http://dx.doi.org/10.15681/KSWE.2016.32.5.410

Investigation of N-nitrosamines using GC-MS/MS in Han-river Water Supply Systems  

Yoon, Woo-hyun (Seoul Water Institute, Seoul Metropolitan Government)
Lee, Jun-ho (Ttukdo Arisu Water Purification Center, Seoul Metropolitan Government)
Lee, Hyun-ju (Seoul Water Institute, Seoul Metropolitan Government)
Lee, Su-won (Seoul Water Institute, Seoul Metropolitan Government)
Ahn, Jae-chan (Seoul Water Institute, Seoul Metropolitan Government)
Kim, Bog-soon (Seoul Water Institute, Seoul Metropolitan Government)
Publication Information
Journal of Korean Society on Water Environment / v.32, no.5, 2016 , pp. 410-418 More about this Journal
Abstract
This study was conducted to improve the analysis method used for N-nitrosamines and to investigate the occurrences of N-nitrosamines in tributaries of the Han-river, intake stations, water treatment plants and tap water used within the city of Seoul. The samples were pretreated through a solid phase extraction and analyzed using a gas chromatography tandem mass spectrometer (GC-MS/MS). The GC-MS/MS in CI mode was compared with the GC-MS/MS in EI mode by the method detection limits (MDLs). MDLs by GC-CI/MS/MS and GC-EI/MS/MS were 0.2 ~ 1.1 ng/L and 0.2 ~ 1.4 ng/L, respectively. Samples were collected from ten tributaries of the Han-river (T1 ~ T10), six intake stations (I1 ~ I6), six water treatment plants (P1 ~ P6) and 25 taps in Seoul city. The maximum levels of N-nitrosodimethylamine (NDMA) were 0.013 μg/L, 0.008 μg/L, 0.006 μg/L and 0.002 μg/L in tributary water, raw water, finished water and tap water samples, respectively. Detected levels were much lower than 0.1 μg/L corresponding to the guideline value of WHO.
Keywords
Drinking water; GC-MS/MS; NDMA; N-nitrosamines; Tap water;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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