Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Measurement of Surfactant Concentration Using Light Scattering Method

광 산란방법을 이용한 계면활성제 농도측정

  • Jo, Young Hyeon (Department of Laser & Optical Information Engineering Cheongju University) ;
  • Jo, Gyeong Hyeon (Department of Laser & Optical Information Engineering Cheongju University) ;
  • Jung, Chi Sup (Department of Laser & Optical Information Engineering Cheongju University)
  • 조영현 (청주대학교 레이저광정보공학과) ;
  • 조경현 (청주대학교 레이저광정보공학과) ;
  • 정치섭 (청주대학교 레이저광정보공학과)
  • Received : 2017.05.12
  • Accepted : 2017.07.28
  • Published : 2017.08.31
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Abstract

A method for measuring the concentration of surfactant in water was developed. In this technique, microbubbles were used as light scatterers. The polarization change of light scattered by microbubbles was analyzed by Mueller matrix analysis. $M_{11}$, one of the Mueller matrix elements, was found to be a key parameter inferring the surfactant concentration within the concentration range of 0 ppm to 60 ppm. The best results for this measurement were obtained when the scattering angle was $150^{\circ}$ and the extinction ratio was 56.2. This experimental result shows that the EPLS can be effectively used as a real time inspection method for water quality monitoring in lakes or rivers.

본 연구에서는 미세기포를 산란체로 사용한 편광산란 측정법을 이용하여 수중 계면활성제의 농도를 측정하는 방법을 개발하였다. Mueller 요소 $M_{11}$은 계면활성제의 농도가 0 ppm부터 60 ppm 사이 영역에서 농도와 선형적인 비례관계를 가져 계면활성제 농도를 측정할 수 있는 유용한 파라메터로 사용될 수 있음을 알았다. 이 측정은 산란각이 150도, 소광비가 56.2 조건에서 가장 효과적 이였다. 이 연구 결과를 볼 때, 편광산란 측정법(EPLS)은 강이나 호수에서 수질을 실시간적으로 모니터하는데 있어 충분히 효과적인 수단으로 보인다.

Keywords

References

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