Journal of Radiation Industry (방사선산업학회지)

Korean Society of Radiation Industry (한국방사선산업학회)
권호 표지

Study on Decomposition of Several Pesticides by Gamma-Irradiation

감마선 조사에 의한 농약 성분의 분해 연구

  • Lee, Joo-Sang (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Jung, Su-Yeon (R&D Center, Kwangmyungdang Pharmaceutical Co. LTD.) ;
  • Oh, Seung-Yeol (R&D Center, Kwangmyungdang Pharmaceutical Co. LTD.) ;
  • Jang, Beom-Su (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Park, Sang Hyun (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute)
  • 이주상 (한국원자력연구원 첨단방사선연구소) ;
  • 정수연 (광명당제약 부설연구소) ;
  • 오승열 (광명당제약 부설연구소) ;
  • 장범수 (한국원자력연구원 첨단방사선연구소) ;
  • 박상현 (한국원자력연구원 첨단방사선연구소)
  • Received : 2012.07.11
  • Accepted : 2012.08.10
  • Published : 2012.09.30

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Abstract

The decomposition of 50 pesticides present in an aqueous solution using ${\gamma}-irradiation$ from a $^{60}Co$ gamma-ray source was investigated using laboratory-scale experiment. The rates of decomposition were determined using a gas chromatography-electron capture detector (GC-ECD), high-performance liquid chromatography-photo diode array detector (HPLC-PDA), and HPLC-fluorescence detector (FLD). When the initial concentration of pesticides was 10 ppm, and the radiation dose was 2, 5, 10, 20, and 30 kGy, respectively, 14 pesticide samples showed high removal rates (>50%) at absorbed doses of more than 10 kGy. With the exception of procymidone, they were all completely removed at a 30 kGy irradiation dose. These results provide fundamental data on the reactivity between gamma-irradiation and pesticides in an aqueous solution. Further, an evaluation of the toxicity of radiolytic intermediate products is required.

Keywords

Acknowledgement

Supported by : 한국원자력연구원