섬유

all-solid-state glucose sensor using proton-conductive thick film

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 380
a solid-state glucose sensor using a proton-conductor thick film was investigated as a possible approach to a miniaturized enzyme sensor. a planar-type electrochemical cell, (reference electrode) au mod antimonic-acid thick film (proton conductor) mod pt-god (sensing electrode), was fabricated on a porous alumina substrate. when measured in a phosphate buffer solution of ph 7.0 at 30 degrees c, the emf of the sensor varied logarithmically with a change in glucose concentration in the range from 5*10/sup -4/ to 4*10/sup -2/ m, following a nernst equation. the 90 percent response time was about 1 min. the glucose sensitivity was fairly stable for 10 days. the nernst slope (-54 mv/decade) was very close to that (-55 mv/decade) of the responses to h/sub 2/o/sub 2/, indicating that the glucose-sensing signal was generated by responding to the h/sub 2/o/sub 2/ produced by the enzymatic reaction of glucose
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