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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 11, Number 2
BKCSDE 11(2)
February 20, 1990 

Polypyrrole Modified Electrode as a Nitrate Sensor
Sung Chul Kang, Keun-Sun Lee, Jin-Doo Kim, Kang-Jin Kim*
The potentiometric response behavior of a polypyrrole(PPy) coated Pt electrode to nitrate ion has been studied. The electrode shows a nernstian behavior with a slope of 59 mV over 0.50 M to 1.0×10-3 M NO3- and a detection limit of 1.0×10-4 M NO3-. The response of the electrode is fast and the selectivities for I-, ClO4-, and IO4- are found to be improved. The effect of pH on the potential response to NO3- is compared with the existing nitrate ion selective electrodes.
124 - 126
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