Journal of Sensor Science and Technology (센서학회지)
- Volume 5 Issue 4
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- Pages.35-40
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- 1996
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- 1225-5475(pISSN)
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- 2093-7563(eISSN)
Preparation and characterization of polymeric membrane pH Sensors
고분자막 pH 센서 제작 및 특성
- Cho, Dong-Hoe (Department of Chemistry, Kon-Kuk University) ;
- Jeong, Seong-Suk (Department of Chemistry, Kon-Kuk University) ;
- Chung, Koo-Chun (Department of Chemistry, Kon-Kuk University) ;
- Lee, Kyung-Ho (Department of Chemistry, Kon-Kuk University) ;
- Park, Myon-Yong (Department of Chemistry, Kon-Kuk University) ;
- Kim, Byung-Soo (Department of Environmental Engineering, An-San Technical College)
- 조동회 (건국대학교 화학과) ;
- 정성숙 (건국대학교 화학과) ;
- 정구춘 (건국대학교 화학과) ;
- 이경호 (건국대학교 화학과) ;
- 박면용 (건국대학교 화학과) ;
- 김병수 (안산공업전문대학)
- Published : 1996.07.31
Abstract
The polymeric membrane pH sensor based on HDBA(hexyldibenzylamine) or HDPA(hexyldiphenylamine) as hydrogen ion carrier was prepared and electrochemical characterization for the variation of a temperature and membrane thickness were studied on. The sensor based on HDPA was not responded selectively to hydrogen ion. The sensor based on HDBA was responded linearly to hydrogen ion in the range of pH 2 - pH 10, it showed the fast response time of 30 - 50sec. and Nernstian slope of 53.6mV/pH. The interfering effect on alkali and alkaline earth metal ions of pH sensor were lower than glass pH sensor. There was shown a good reproducibility and stability with the precision of 2 - 4mV (
수소이온운반체로 HDBA(hexyldibenzylamine)나 HDPA(hexyldiphenylamine)을 이용하여 고분자막 pH 센서를 제작하였고, 온도 및 막의 두께 변화에 대한 전기화학적 특성을 연구하였다. HDPA를 이용한 센서는 수소이온에 대하여 선택적으로 감응하지 않았으며, HDBA를 이용한 센서는 pH 2 - pH 10 범위에서 수소이온에 대하여 선형적이고, 응답시간도 30 - 50초로 매우 빠르며, Nernstian 기울기는 53.6mV/pH을 나타내었다. pH 센서는 유리전극과 비교하여 알칼리금속과 알칼리토 금속이온에 대하여 방해를 적게 받았고, 재현성 및 안정성에 대한 편차는 2 - 4mV(
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