Earticle

초록

영어

A biosensor with PZT piezoelectric ceramic crystal was developed for the detection of formaldehyde gas. Poled PZT piezoelectric ceramic disk was made from ZrO2, TiO2 and Nb2O5, together with the addition of PbO and polyvinyl alcohol, through various processes of mixing, calcination drying, crushing, forming, sintering, polishing, ion coating and poling. Oscillator circuit of sensor was made of operational amplifier(AD811AN). Formaldehyde dehydrogenase was immobilized onto a piezoelectic ceramic crystal, together with the cofactors, reduced glutathione and nicotinamide adenine dinucleotide. The effect of flow rate on the sensitivity was determined by varing the flow rate of carrier gas from 24.7mL/min to 111.7mL/min through detector cell. The results indicated that as the flow rate was increased, the recovery rate was increased. And a significant increase in the sensitivity was observed in enhanced flow rate of carrier gas. Frequency difference(ΔF) of immobilized PZT piezoelectic disk increased proportionally to the concentration gas and reproduced to repeated exposures of formaldehyde gas(28ppm, Δ68Hz).

목차

서론
 재료 및 방법
  발진회로 구성
  시편제작
  센서구성
 결과 및 고찰
  Carrler Gas의 유속이 센서에 미치는 영향
  Formaldehyde gas의 농도에 따른 주파수의 변화
  센서의 재현성
 요약
 감사
 참고문헌

키워드

저자

• 김병옥 [ Byoung-Ok Kim | 영남대학교 화학공학과 및 공업화학부 ]
• 곽성곤 [ Sung-Gon Kwak | 영남대학교 화학공학과 및 공업화학부 ]
• 임동준 [ Dong-Joon Lim | 영남대학교 화학공학과 및 공업화학부 ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  KSBB Journal

• 간기

  격월간

• pISSN

  1225-7117

• 수록기간

  2009~2013

• 십진분류

  KDC 476 DDC 576