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조동회,정성숙,정구춘,이경호,박면용,김병수 ( Dong Hoe Cho,Seong Suk Jeong,Koo Chun Chung,Kyung Ho Lee,Myon Yong Park,Byung Soo Kim ) 한국센서학회 1996 센서학회지 Vol.5 No.4
The polymeric membrane pH sensor based on HDBA(hexyldibenzylamine) or HDPA(hexyidiphenylamine) 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 (±0.1mV).