Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
권호 표지

Occurrence and Distribution of Selected Veterinary Antibiotics in Soils, Sediments and Water Adjacent to a Cattle Manure Composting Facility in Korea

국내 우분 퇴비화 시설 인근 농경지 및 수계 중 Tetracycline 및 Sulfonamide 계열 항생물질의 분포특성

  • Lim, Jung-Eun (Department of Biological Environment, Kangwon National University) ;
  • Kim, Sung-Chul (Department of Biological Environment, Kangwon National University) ;
  • Lee, Hyeon-Yong (Department of Biological Environment, Kangwon National University) ;
  • Kwon, Oh-Kyung (Hazardous Substances Division, National Academy of Agricultural Science) ;
  • Yang, Jae-E. (Department of Biological Environment, Kangwon National University) ;
  • Ok, Yong-Sik (Department of Biological Environment, Kangwon National University)
  • 임정은 (강원대학교 자원생물환경학과) ;
  • 김성철 (강원대학교 자원생물환경학과) ;
  • 이현용 (강원대학교 자원생물환경학과) ;
  • 권오경 (국립농업과학원 유해물질과) ;
  • 양재의 (강원대학교 자원생물환경학과) ;
  • 옥용식 (강원대학교 자원생물환경학과)
  • Received : 2009.07.29
  • Accepted : 2009.08.28
  • Published : 2009.10.31
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Abstract

There has been increased concern regarding the release of antibiotics to different environmental compartments due to the possibility of the development of antibiotic resistant bacteria. However, limited information is available regarding the occurrence, fate, and transport of antibiotics in Korea in both the aqueous phase and in solid phases such as sediment and soil. Therefore, this study was conducted to monitor the concentration of released antibiotics in surface water, sediment, and soil adjacent to a cattle manure composting facility in Korea. Specifically, the following six antibiotics were monitored: tetracycline (TC), chlortetracycline (CTC), oxytetracycline (OTC), sulfamethazine (SMT), sulfamethoxazole (SMX), and sulfathiazole (STZ). To extract and quantify the antibiotics from different environmental compartments, solid phase extraction (SPE) and high performance liquid chromatography mass spectrometry (HPLC/MS) techniques were adopted. The concentration of the six antibiotics ranged from below the detection limit (BDL) to 0.71 ${\mu}g$/L in surface water, from BDL to 27.61 ${\mu}g$/L in sediment, and from 0.12 to 157.33 ${\mu}g$/L in soil. In addition, higher concentrations of antibiotics were observed in surface water and sediment at locations closer to the composting facility indicating that composting is the source of the antibiotics found in the environment. Furthermore, higher concentrations of antibiotics were observed in the solid phase (sediment and soil) than the aqueous phase. These findings indicate that the possibility of antibiotic resistant bacteria is increased because such bacteria are more stable in the solid phase. Overall, longterm monitoring of the aqueous phase and solid phase is necessary to gain a better understanding of the impact of antibiotics from source on the environment in Korea.

최근 전 세계적으로 환경 중에 잔류하는 항생물질로 인한 항생물질 내성박테리아의 발현에 대한 우려가 커지고 있다. 그러나 국내의 경우 이에 대한 기초자료 확립을 위한 액상(수질)과 고상(토양, 저질토)에 잔류하는 항생물질의 동태와 이동에 대한 연구는 극히 드문 실정이다. 이에 본 연구에서는 국내 우분 퇴비화 시설에 인접한 농경지 토양과 지표수 및 저질토에 대한 항생물질 모니터링을 실시하여 tetracycline 계열의 항생물질 3종(tetracycline, chlortetracycline, oxytetracycline)과 sulfonamide 계열의 항생물질 3종(sulfamethazine, sulfamethoxazole, sulfathiazole)에 대한 분포특성을 살펴보았다. 항생물질은 고형상추출(SPE, solid phase extraction)을 실시한 후 고성능액체크로마토그래피 질량분석기(HPLC/MS)로 분석하였다. 이를 통해 검출된 환경 중 항생물질의 농도는 지표수에서 BDL ~0.71 ${\mu}g$/L, 저질토에서 BDL ~27.61 ${\mu}g$/L, 농경지 토양에서 0.12~157.33 ${\mu}g$/L 수준으로 나타났으며 퇴비화 시설과 인접한 지점의 시료에서 상대적으로 높은 수준의 항생물질이 검출되었다. 이를 통해 퇴비화 시설이 환경 중에 존재하는 항생물질에 영향을 주고 있음을 알 수 있었다. 한편 수질시료에 비해 저질토와 토양에서 항생물질이 높은 농도로 검출되었으며 이는 항생물질의 물리화학적 특성에 기인하는 것으로 판단되었다. 장기적으로는 저질토와 토양에서 항생물질 내성박테리아 발현이 우려되므로 향후 항생물질의 환경 중 이동 및 잔류특성 평가를 위한 장기 모니터링 연구가 필요할 것으로 판단된다.

Keywords

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