Study on New Needle-type Nicotine Chemical Sensor

Abstract

Abstract: The preparation of a new needle-type nicotine chemical sensor based on a needle wire modified with a polymer material was used as basis electrode. A layer of PVC membrane containing silicotungstic acid and plasticizer was coated on the surface the basis electrode.At pH4.5～7.0, this sensor showed a rapid and near-Nernstian response to nicotine cation in the concentration range of 5.0×10-5～1.0×10-1mol/L ,with a slope of 57.1 mV/dec. In this work ,it described the needle-type nicotine chemical sensor characteristics when nano-material SiO2 particles were compounded with PVC sensitive membrane.It exhibited that nano-material SiO2 particles could shorten response time and improve stability of the sensor.

Key words: Nicotine , Chemical sensor , Nano-material , SiO2

JIANG Shao-Tong, YANG Jun, PAN Li-Jun, ZHANG You-Jin. Study on New Needle-type Nicotine Chemical Sensor[J]. FOOD SCIENCE, 2002, 23(1): 97-99.

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Study on New Needle-type Nicotine Chemical Sensor

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