Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Study on Optical Characteristics of 8-Hydroxyquinoline Synthesized Derivative as Sensing Material of the Fiber-Optic Copper Ion Sensor in Aqueous Environment

수질환경에서 광섬유 센서의 구리 이온 감지 물질로서 8-Hydroxyquinoline 합성유도체의 광학적 반응 특성 연구

  • Kim, Beom Kyu (Department of Energy & Environmental Engineering, Soonchunhyang University) ;
  • Park, Byung Gi (Department of Energy & Environmental Engineering, Soonchunhyang University)
  • 김범규 (순천향대학교 에너지환경공학과) ;
  • 박병기 (순천향대학교 에너지환경공학과)
  • Received : 2017.10.23
  • Accepted : 2017.12.08
  • Published : 2017.12.31
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Abstract

An 8-hydroxyquinoline compound that was synthesized with 8-hydroxyquinoline-2-carboxaldehyde and 4-aminoantipyrine was investigated for use as the sensing material of a fiber-optic copper ion sensor in an aqueous environment. The experiment was conducted with a fiber-optic measurement system, in order to evaluate the relationship between the absorbance peak and copper ion concentration. The synthesized derivative exhibited a (highly selective) chromogenic phenomenon for copper ions among various metal ions in an aqueous environment and showed a specific absorbance peak at a wavelength of 530 nm for copper ions. The effect of mercury ions was investigated to evaluate the selectivity of the prepared synthesized derivatives toward Cu ions. The absorbance was measured at various concentration ratios of Cu and Hg ions (Cu:Hg ratios from 0.05 to 20), and it was found that the absorbance at 530 nm tended to increase with increasing Cu ion concentration. The experimental results also showed the linear relationship between the logarithmic concentration of copper ions and the specific absorbance peak at a wavelength of 530 nm. These results indicate that the synthesized 8-hydroxyquinoline compound has selectivity for copper ions and can be used as a sensing material for fiber-optic copper ion sensors.

수질환경에서 구리이온을 검출하기 위하여 광섬유 센서의 구리 이온 감지 물질로 8-Hydroxyquinolin-2carboxaldehyde와 4-Aminoantipyrine으로 합성된 8-Hydroxyquinoline 합성유도체에 대해 광학적 반응 특성을 조사하였다. 실험은 광섬유를 이용한 측정시스템을 이용하여 수용액에 용해된 구리 이온의 농도에 대해 합성유도체에 의한 흡광도와 관계를 평가하기 위하여 수행되었다. 8-Hydroxyquinoline 합성유도체는 수질 환경에서 다양한 금속 이온들 중에서 구리 이온에 대해 노란색에서 붉은색으로 변화되는 높은 발색 현상을 나타냈으며 530 nm의 고유 흡광 파장을 보였다. 제작된 합성유도체의 Cu 이온에 대한 선택성을 평가하기 위하여 Hg 이온의 영향을 조사하였다. Cu와 Hg 이온의 다양한 농도 비 (Cu:Hg ratio 0.05부터 20까지)에서 흡광도를 측정한 결과, Cu 이온의 농도 증가에 따라 530nm에서 흡광도가 증가하는 경향을 보였다. 구리 이온의 고유 흡광 파장인 530 nm에서 합성 유도체에 의한 흡광도 세기는 구리 이온의 로그 농도에 선형으로 비례하였다. 따라서 8-Hydroxyquinoline합성유도체는 광섬유 센서의 구리 이온 감지 물질로 우수한 특성을 보임을 실험적으로 확인할 수 있었다.

Keywords

References

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