21종류의 폴리스티렌 용기를 대상으로 용출조건에 따른 용기내 증류수로 용출되는 5종의 VOCs(톨루엔, 스티렌, 에틸벤젠, 이소프로필벤젠 및 n-프로필벤젠)를 Purge&Trap 장치를 연결하여GC-FID로 분석하였다. 각 표준물질은 1~50 ng/ mL의 농도범위에서 직선성(r2 =0.9976~0.9995)을 나타냈으며, 검출한계는 0.041~0.092 ng/mL, 정량한계는 0.135~0.304 ng/mL 이었다. 용출조건은 첫째, 60oC에서 30분, 둘째, 95oC에서 30분, 셋째, 실생활에서 컵라면 섭취시를 고려하여 끓은 물을 부은 후 뚜껑을 덮고 3분간 유지한 다음 뚜껑을 열고 5분 동안 개방하여 용출시키는 것으로 설정하였다. 톨루엔, 에틸벤젠, 이소프로필벤젠 및 n-프로필벤젠은 평균용출량이 모든 조건에서 5 ng/mL 이하로 검출되었으며 스티렌의 경우는 60oC에서 평균용출량이 4.02 ng/mL, 95oC에서는 52.71 ng/mL, 컵라면 섭취시의 조건에서는 17.23 ng/mL로 검출되었다.

In this study, the level of migration of 5 kinds of volatile organic compounds (VOCs) (toluene, styrene, ethylbenzene, isopropylbenzene and n-propylbenzene) into distilled water from polystyrene-made food containers was measured using Purge&Trap combined with GC/FID. The contents of the VOCs which have regulatory limits in Korea food code only for material specification were determined under three exposure conditions which were 30 min at 60oC, 30 min at 95oC and actual situation of instant noodle intake. The calibration curve of 5 compounds showed good linearity (r2 = 0.9976~0.9995) within the concentration range of 1~50 ng/mL. The limit of detection (LOD) and limit of quantification (LOQ) were validated at range of 0.041~0.092 and 0.135~0.304 ng/mL, respectively. The average migration contents of 5 compounds were below 5 ng/mL except for styrene. The average contents of styrene were highly detected at 95oC for 30 min exposure (52.71 ng/mL). Under actual condition at instant noodle intake, the average contents of styrene was 17.23 ng/mL. The results demonstrated that the migration rate of VOCs was related to storage temperature and time.

ABSTRACT
 재료 및 방법
  실험재료
  표준물질
  기기 및 분석조건
  표준용액의 조제
  검출한계 및 정량한계
  용출시험
 결과 및 고찰
  검량곡선, 검출한계 및 정량한계
  온도에 따른 VOCs의 용출량 측정
  실생활 적용 시험에 따른 VOCs의 용출량 측정
 요 약
 참고문헌

• 김남훈(서울특별시 보건환경연구원) | Nam Hoon Kim (Seoul Metropolitan Government Research Institute of Public Health and Environment) Correspondence to
• 김애경(서울특별시 보건환경연구원) | Ae Kyeong Kim (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 조태희(서울특별시 보건환경연구원) | Tae Hee Cho (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 박경애(서울특별시 보건환경연구원) | Kyung ai Park (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 곽재은(서울특별시 보건환경연구원) | Jae Eun Kwak (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 김지영(서울특별시 보건환경연구원) | Ji Young Kim (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 김일영(서울특별시 보건환경연구원) | Il Young Kim (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 채영주(서울특별시 보건환경연구원) | Young Joo Chae (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 김민영(서울특별시 보건환경연구원) | Min Young Kim (Seoul Metropolitan Government Research Institute of Public Health and Environment)