Detecting organic vapors using a conductometric sensor prepared from Ardel®D-100 and graphite |
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Authors: | Ozlem Yazici M Reyhan Moroglu Husnu Cankurtaran Ozlem Cankurtaran Ferdane Karaman |
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Institution: | (1) Department of Chemistry, Yildiz Technical University, Istanbul-Esenler, Turkey |
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Abstract: | The composites of graphite with Ardel?D-100 which is a trademark of a polyester of bisphenol-A with terephthalic and isophthalic acid were used as a sensing material
in a conductometric vapor sensor. The magnitudes of responses are increased in the order of benzene, isobutyl acetate, isoamyl
acetate, ethyl benzene and chloro benzene. This suggests that Ardel?D-100 can be used as a sensing material for chlorobenzene, ethyl benzene and isoamyl acetate. On the other hand, specific
retention volumes of the sensed vapors on Ardel?D-100 coated on graphite were determined by inverse gas chromatography at temperatures between 200 and 260 °C. The distribution
coefficient, K
s of the vapors between stationary and mobile phases in the column was obtained. It was revealed for the first time that the
logarithm of K
s of the solvents varies almost linearly with their responses based on conductometric resistance of the sensing polymer composite.
Subsequently, the study suggests that gas chromatographic retention data can be used in prediction of the conductometric responses
of a polymeric sensor to vapors.
Correspondence: Ferdane Karaman, Department of Chemistry, Yildiz Technical University, 34220 Istanbul-Esenler, Turkey |
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Keywords: | : Polyester of bisphenol-A Ardel?D-100 inverse gas chromatography distribution coefficient vapor sensor |
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