Quantitation of Phthalate and Adipate in Natural Mineral Water and PET Container

먹는 샘물 및 PET 용기 중 Phthalate와 Adipate의 정량분석

  • Shin, Ueon-Sang (Korea Institute of Science and Technology) ;
  • Ahn, Hye-Sil (Department of Environmental Science, Kongju National University) ;
  • Shin, Ho-Sang (RRC/NMR, Drug Abuse Research Center, Kongju National University)
  • 신원상 (한국과학기술연구원) ;
  • 안혜실 (공주대학교, 환경과학과 대학원) ;
  • 신호상 (공주대학교, RRC/NMR, 약물남용연구소)
  • Received : 2002.07.11
  • Published : 2002.10.25

Abstract

The determination of phthalates and adipate in natural mineral water and its container is described. Phthalates and adipate were extracted from natural mineral water by liquid-liquid extraction with methylene chloride, concentrated and then injected in GC-MS (SIM). Phthalates and adipate from 1) PET, cap, label and glue were extracted in Soxhlet with 50 mL of carbon tetrachloride, purified with silicagel and detected with GC-MS (SIM). Peak shapes and quantitation of phthalates and adipate were excellent, with linear calibration curves over a range of $0.1{\sim}10{\mu}g/L$ in water sample ($r^2$ > 0.996) and over a range of $1{\sim}1,000{\mu}g/Kg$ in solid samples ($r^2$>0.994). The detection limits of analytes were $0.002{\sim}0.010{\mu}g/L$ in water and $0.01{\sim}0.02{\mu}g/Kg$ in solid samples. Five kinds of natural mineral water samples, two PETs, two labels, two caps and two glues were quantified by the described procedure. As a results, the concentrations of total phthalates in natural mineral water ranged from ND ~ 1.2 ng/mL. Otherwise, the concentrations of total phthalate extracted from PET ranged from 0.55 ~ 1.2 mg/Kg. We found that the accurate determination of phthalte and adipate in natural mineral water and container must be considered blank correction and the removal of label and glue in PET sample.

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