| Title |
Source Tracking of Particular Matters using Stable Isotope Analysis and Water Quality Characteristics in Gulpo and Anyang Stream, Han-River |
| Authors |
홍정기 ( Jung-ki Hong ) ; 임종권 ( Jong Kwon Im ) ; 손주연 ( Ju Yeon Son ) ; 노혜란 ( Hye-ran Noh ) ; 유순주 ( Soon-ju Yu ) ; 이보미 ( Bo-mi Lee ) |
| DOI |
https://doi.org/10.15681/KSWE.2020.36.2.116 |
| Keywords |
Anyang stream; Gulpo stream; Organic matter; Stable isotope ratio; Water quality |
| Abstract |
This study aims to identify the characteristics of organic matter and pollutant sources using water quality and stable isotope ratios (δ15N, δ13C) of the two inflow tributaries (Gulpo (GP) and Anyang (AY) streams). Water samples were analyzed in June and September 2018, and the results showed that the concentrations of nutrients, such as TN and NO3-N, were increased at GP4, which is located at the downstream of sewage treatment facilities(STFs). TOC and TN ratios showed a strong positive correlation (R2 = 0.77, p<0.01) at all points except for GP4. The results of GP’s stable isotope ratio analysis do not appear to be a constant cluster compared to AY because GPs with large amounts of pollutants from the industry (metal processing companies, etc.) have less tributary, shorter waterway and significantly different external sources. This could be attributed to different sources of external inflow despite its smaller number of tributaries and shorter waterways than AY. In the first half of the year, the δ15N of GP4 was affected by discharge of STFs, while AY3 seemed to have an influence of tributary than the discharge of STFs. Consequently, using water quality, stable isotope ratio and C/N, the sources of contamination in two streams with different contaminants were identified and origin was estimated. |