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Aqueous Photolysis of the Organophosphorus Insecticide Carbofuran

살충제 Carbofuran의 수중광분해

  • Kim, Kyun (Environmental Toxicology Research Team, Korea Research Institute Chemical Technology) ;
  • Kim, Yong-Hwa (Environmental Toxicology Research Team, Korea Research Institute Chemical Technology)
  • 김균 (한국화학연구원 안전성연구센터 환경독성연구팀) ;
  • 김용화 (한국화학연구원 안전성연구센터 환경독성연구팀)
  • Published : 2002.09.30

Abstract

Photodegadation rates of carbofuran in aqueous solution were measured under various test conditions mainly following the guidelines of U.S. EPA and OECD. Half-lives of carbofuran in distilled water were 9.7 days. 3.3 days, and 1 hr under natural sunlight, SUNTEST with UV filter, and SUNTEST without UV filter, respectively. Waters from a paddy field accelerated the decomposition by factor of 6. It was confirmed that the use of SUNTEST could shorten the test period of photodegradation.

살충제 carbofuran의 수중 광분해 실험을 미국 EPA 및 OECD 방법으로 수행하였다. Carbofuran은 자연광을 흡수하지 않는 화합물이지만, 야외에서 증류수로 수행한 광분해시험 결과 반감기가 9.7일, SUNTEST에서 3.4일, SUNTEST의 UV하에서 1시간으로 신속한 광분해가 일어남을 확인하였다. 특히 논물에서는 SUNTEST에서의 반감기가 14시간으로 증류수 보다 약 6배 가속화되었으며, 살균한 논물보다는 비살균 논물에서의 광분해가 다소 빠르게 일어났다. 이와 같은 결과로 볼 때 carbofuran의 경우 수도작 상황에서 sensitizer 등에 의한 간접 광분해의 가능성이 있음을 확인하였다.

Keywords

References

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