쑥갓의 안전성 확보를 위하여 쑥갓 재배기간 중 bifenthrin 및 chlorothalonil의 잔류양상을 연구하였다. 쑥갓에 유효성분 bifenthrin을 살포 후 0일(3시간)은 0.90 ± 0.07 mg/kg을 보였고, 26일후에는 0.14 ± 0.01mg/kg이었으며, chlorothalonil은 0 일(3시간)에 79.12 ± 6.02mg/kg, 26일후에는 4.60 ± 1.33mg/kg 으로 나타났다. 쑥갓 중 bifenthrin과 chlorothalonil의 회수율은 각각 88.67 ± 7.97%와 99.90 ± 16.03%로 유효한 회수율 범위를 보였다. 쑥갓의 생육 기간 중 농약의 잔류량 변화는 first order kinetics model을 적용하여 해석한 결과 bifenthrin의 반감기는 9.63일이었으며, chlorothalonil은 6.54일이었다. 산출된 두 농약의 감소상수를 이용하여 생산단계 잔류 허용기준을 산출한 결과 bifenthrin의 수확 26일 전 잔류 량은 11.7 mg/kg이었으며, chlorothalonil은 24.1 mg/kg이었는데 수확 예정일에는 두 농약의 잔류허용기준이 모두 5.0 mg/kg 이하로 잔류하여 안전할 것으로 판단되었다. 쑥 갓 생산단계 농산물의 농약 잔류허용기준을 설정하는데 기초자료로 활용하여 농산물 유통단계의 부적합에 따른 생산자의 경제적 손실을 최소화하고 소비자에 대한 안전성을 강화할 수 있다고 사료된다.

This study investigated the residual characteristics of bifenthrin and chlorothalonil in crown daisy and suggested pre-harvest residue limits (PHRLs) based on their dissipation patterns and biological half-lives. The samples for residue analysis were harvested at 0 (3 hr), 1, 3, 5, 7, 9, 11, 13, 15, 18, 22 and 26 days after treatment, and analyzed by GC/ μ-ECD and TOF/MS. The limit of quantitation (LOQs) of bifenthrin and chlorothalonil were 0.0046 mg/kg and 0.0007 mg/ kg, respectively. Recoveries ranged from 88.67 ± 7.97% and 99.90 ± 16.03%, showing that this method is appropriate for the analysis of the pesticide residues in crown daisy. Being well within first order kinetics, the biological half-lives of the pesticide residues in crown daisy were 9.63 days for bifenthrin and 6.54 days for chlorothalonil. The PHRLs of bifenthrin and chlorothalonil were recommended as 11.70 mg/kg and 24.10 mg/kg for 26 days before harvest, respectively.

ABSTRACT
 Materials and Methods
  시험작물 재배
  시험농약 및 시약
  시험약제 살포, 시료채취, 증체율 조사
  시료의 전처리
  분석기기 조건
  표준검량선 작성, 검출한계 및 정량한계
  회수율 시험
  생물학적 반감기 및 생산단계 농약잔류허용기준 산출
  생장에 의한 희석효과 분석
 Results and Discussion
  재배기간 중 쑥갓의 증체율
  살포액의 부착량
  분석법의 검증
  재배기간 중 잔류량 변화
  회수율, 검출한계 및 정량한계
  Pre-harvest Residue Limits (PHRLs) 산출
  증체율을 배제한 bifenthrin과 chlorothalonil의 희석효과
 국문요약
 References

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• 김기유(경기도보건환경연구원 구리농수산물검사소) | Ki-Yu Kim (Guri Agro-fishery Products Inspection Center, Gyeonggi province Institute of Health and Environment Guri)
• 임부건(경기도보건환경연구원 구리농수산물검사소) | Bu-Geon Lim (Guri Agro-fishery Products Inspection Center, Gyeonggi province Institute of Health and Environment Guri)
• 유경신(경기도보건환경연구원 구리농수산물검사소) | Kyong-Shin Ryu (Guri Agro-fishery Products Inspection Center, Gyeonggi province Institute of Health and Environment Guri)
• 이유진(경기도보건환경연구원 구리농수산물검사소) | You-Jin Lee (Guri Agro-fishery Products Inspection Center, Gyeonggi province Institute of Health and Environment Guri)
• 임정화(경기도보건환경연구원 구리농수산물검사소) | Jeong-Hwa Lim (Guri Agro-fishery Products Inspection Center, Gyeonggi province Institute of Health and Environment Guri)
• 강충원(경기도보건환경연구원 구리농수산물검사소) | Choong-Won Kang (Guri Agro-fishery Products Inspection Center, Gyeonggi province Institute of Health and Environment Guri)
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• 서정화(경기도보건환경연구원 구리농수산물검사소) | Jeong-Hwa Seo (Guri Agro-fishery Products Inspection Center, Gyeonggi province Institute of Health and Environment Guri)
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