Analytical Science and Technology (분석과학)

The Korean Society of Analytical Sciences (한국분석과학회)
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Determination of benzene, toluene, ethylbenzene and o-xylene in bottled waters by headspace solid-phase microextraction and gas chromatography/mass spectrometry

HS-SPME-GC/MS를 이용한 먹는 샘물 중 벤젠, 톨루엔, 에칠벤젠, 자일렌의 정량

  • Kim, Jong-Hun (Department of Environment. health science, Jeonju University)
  • 김종훈 (전주대학교 대체의학대학 환경보건학과)
  • Received : 2010.08.24
  • Accepted : 2011.02.22
  • Published : 2011.04.25
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Abstract

Abstract: The amount of benzene, toluene, ethylbenzene, and o-xylene (BTEX) in 30 kinds of bottled waters purchased from market and 9 kinds of tap waters from home were determined using headspace solid phase microextraction (HS-SPME). The sample was stirred at 1200 RPM G for 4 min using a magnetic bar with $100\;{\mu}m$ PDMS as adsorbent for BTEX. Then it was desorbed from the fiber for 1 min at room temperature. Quantitation was achieved using standard calibration method. The limit of detection was determined as benzene 0.39 (${\pm}0.04$) ng/mL, toluene 0.08 (${\pm}0.04$) ng/mL, ethylbenzene 0.04 (${\pm}0.01$) ng/mL, and o-xylene 0.05 (${\pm}0.02$) ng/mL. Benzene and o-xylene were not detected in any samples, but toluene was detected in 11 samples, and ethylbenzene was detected just in 3 samples among 30 investigated bottled waters. The concentration range of investigated materials for toluene and o-xylene were $0.24({\pm}0.09)\sim2.95\;({\pm}0.08)\;ng/mL$, $0.08({\pm}0.06)\sim0.93({\pm}0.10)\;ng/mL$, respectively.

국내 시중에 유통되어 음용되고 있는 먹는 샘물(생수) 30 종과 가정으로 공급되는 수돗물 9종 중의 벤젠, 톨루엔, 에틸벤젠, 자일렌을 고체상미량추출법을 사용하여 정량하였다. 정지상은 $100\;{\mu}m$ PDMS fiber를 이용하였고, 실험조건은 실온에서, 교반시간 1200 RPM G, 흡착시간 4 분, 탈착시간 1 분 이었다. 정량은 표준검량선법을 사용하였다. 평균검출한계는 벤젠 0.39 (${\pm}0.04$) ng/mL, 톨루엔 0.08 (${\pm}0.04$) ng/mL, 에틸벤젠 0.04 (${\pm}0.01$) ng/mL, o-자일렌 0.05 (${\pm}0.02$) ng/mL 이었다. 30 종의 먹는 샘물(생수)조사 결과 벤젠과 o-자일렌은 모든 시료에서 검출되지 않았으며, 톨루엔의 경우는 11 개의 시료, 에틸벤젠은 3 개의 시료에서 검출되었다. 검출된 물질의 각각의 농도범위는 $0.24({\pm}0.09)\sim2.95\;({\pm}0.08)\;ng/mL$, $0.08({\pm}0.06)\sim0.93({\pm}0.10)\;ng/mL$였다.

Keywords

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