Migration Mechanism of Hazard Elements from Brass Kitchenwares

황동제 주방기구에서 유해중금속의 용출기작에 관한연구

  • Lee, Kwang-Ho (Packaging Division, Korea Food & Drug Administration) ;
  • Kwon, Ki-Sung (Packaging Division, Korea Food & Drug Administration) ;
  • Jeon, Dae-Hoon (Packaging Division, Korea Food & Drug Administration) ;
  • Choi, Byung-Hee (Packaging Division, Korea Food & Drug Administration) ;
  • Kim, Sung-Wook (Packaging Division, Korea Food & Drug Administration) ;
  • Lee, Sun-Hee (Packaging Division, Korea Food & Drug Administration) ;
  • Lee, Chul-Won (Packaging Division, Korea Food & Drug Administration)
  • 이광호 (식품의약품안전청 식품첨가물평가부 용기포장과) ;
  • 권기성 (식품의약품안전청 식품첨가물평가부 용기포장과) ;
  • 전대훈 (식품의약품안전청 식품첨가물평가부 용기포장과) ;
  • 최병희 (식품의약품안전청 식품첨가물평가부 용기포장과) ;
  • 김성욱 (식품의약품안전청 식품첨가물평가부 용기포장과) ;
  • 이선희 (식품의약품안전청 식품첨가물평가부 용기포장과) ;
  • 이철원 (식품의약품안전청 식품첨가물평가부 용기포장과)
  • Published : 1999.12.31

Abstract

The migration mechanism of trace elements, Pb, Cd, Cu, Zn and Sn from brass food-contact utensiles was investigated. The migration of metals from brass was affected by the migration temperature (30, 60, 80 and $95^{\circ}C$), the simulant pH (2.5, 4.3, 6.0 and 7.0) and the migration time (30, 90, 180 and 360 min.). The amount of Pb migration was maximum at $95^{\circ}C$ with pH 2.5. This study indicated that the equilibrium of Pb migration was reached at 180 minutes. The mechanism of Pb migration was investigated with Scanning Electron Microscope (SEM) and Electron Probe Micro Analyzer (EPMA). To correlate the relations between the migration and the content of Pb in brass samples, ten brass samples having known content of Pb (the quantities of Pb in brass ; 0, 0.02, 0.09, 0.1, 0.2, 0.5, 0.9, 1.4, 5.4 and 9.2% (w/w)) were tested in the following conditions, 4% acetic acid, $95^{\circ}C$ and 30 minutes. The result represented that content of Pb in brass samples must be below 0.2% (w/w) to satisfy the 1.0 ppm (as Pb) of Korea Food Code.

구이용 불판인 주방용 기구에 사용되는 황동제에서 Pb, Cd, Cu, Zn, Sn등 유해 중금속의 용출과 메카니즘에 대하여 연구하였다. 황동을 대표금속으로 선정하여 용출 온도 (30, 60, 80, $95^{\circ}C$), pH (2.5, 4.3, 6.0, 7.0) 및 시간 (30, 90, 180, 360분)에 따른 금속 용출량 조사에서 온도 및 pH 변화에 따른 시험결과, $95^{\circ}C$, pH 2.5인 조건에서 용출이 가장 많았던 반면, 용출 시간별 시험에서는 180분 이후까지 Pb가 용출된 후 평형 상태를 유지하였다. 납이 용출되는 가시적 현상은 SEM을 통하여 확인할 수 있었다. 황동의 경우, 재질중의 Pb 함량과 용출량과의 관계를 규명하기 위해 Pb 함량별 10종 (0, 0.02, 0.09, 0.1, 0.2, 0.5, 0.9, 1.7, 5.4, 9.2%(w/w))의 시편를 제작하여 4% 초산, $95^{\circ}C$, 30분에서 시험한 결과, 용출규격인 중금속이 1.0 ppm (납으로서) 이하가 되기 위해서는 재질중 허용 Pb 함량은 0.2% 이하가 되어야 했다.

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