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Characterization of bromine and chlorine in the closed combustion system

연소 반응기를 이용한 브롬 및 염소의 함량 측정에 관한 연구

  • Choi, Ki-In (Test & Standardization Center, Korea Institute of Ceramic Eng. & Tech.) ;
  • Kwon, Duck-Jun (Test & Standardization Center, Korea Institute of Ceramic Eng. & Tech.) ;
  • Bae, Sung-Jin (School of Environmental Engineering, College of Urban Sciences, University of Seoul) ;
  • Lee, Dong-Hoon (School of Environmental Engineering, College of Urban Sciences, University of Seoul)
  • 최기인 (한국세라믹기술원 시험표준센터) ;
  • 권덕준 (한국세라믹기술원 시험표준센터) ;
  • 배성진 (서울시립대학교 도시과학대학 환경공학부) ;
  • 이동훈 (서울시립대학교 도시과학대학 환경공학부)
  • Received : 2011.11.02
  • Accepted : 2011.12.01
  • Published : 2011.12.31

Abstract

In this study, we investigated the analytical methods for bromine (Br) and chloride (Cl) with oxygen combustion bomb, using a halogen-containing polymer materials. On measuring Cl content, it showed less reproducibility of the results applying Mohr method or potentiometric titration method than those applying acid-base titration method. In both Br and Cl tests with an oxygen combustion bomb, their concentrations in the absorption and cleaning solution with distilled water were much higher than those in the combustion gas. On the other hand, the concentration level of Br measured by the oxygen combustion bomb method were a little bit lower than those measured by XRF or combustionion chromatography.

연소 반응기를 이용하여 고분자 물질에 함유된 할로겐 원소인 브롬과 염소를 정량하기 위한 조건을 연구하였다. 염소농도 측정의 경우, Mohr법이나 전위차 적정법을 이용한 경우가 산-염기 적정법을 이용한 경우보다 분석 데이터 간 편차가 낮게 나타났다. 또한, 연소 반응기에서 단계별로 포집한 용액에 대한 염소와 브롬 측정 결과, 두 원소 모두 증류수를 흡수액으로 사용할 때, 0.3 M NaOH 수용액을 사용할 때보다 더 높은 회수율을 보였으며, 흡수액/세척액에서의 농도가 가스상의 형태로 배출되는 농도에 비해 높은 것으로 나타났다. 한편, 브롬 함량을 측정할 때, 연소 반응기를 이용한 경우가 XRF나 연소-이온크로마토그래피를 이용한 경우에 비해 농도가 상대적으로 낮게 평가되는 것으로 나타났다.

Keywords

References

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