A chemically diverse conducting polymer-based "electronic nose".
نویسندگان
چکیده
منابع مشابه
Identification of insecticide residues with a conducting-polymer electronic nose
Current methods for the detection and identification of pesticide residues on agricultural and landscape plants require time-consuming and expensive chemical analyses [14]. This problem causes delays for agricultural land managers in making important crop-management and pest-control decisions involving pesticide applications. The presence of pesticide residues on food crops also is a major heal...
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Arrays of polymer films embedded with conductive or resistive material have attracted significant attention as “electronic noses”. Sorption of a vapor into the polymer films causes physical swelling, which leads to a change in the DC electrical resistance of the film. Like the receptors of the mammalian olfactory system, each polymer-based detector responds to more than one analyte and each ana...
متن کاملFungicide Residue Identification and Discrimination Using a Conducting Polymer Electronic-nose
The identification of fungicide residues on crop foliage is necessary to make periodic pest management decisions. The determination of fungicide residue identities currently is difficult and time consuming using conventional chemical analysis methods such as gas chromatography-mass spectroscopy. Different fungicide types produce unique electronic aroma signature patterns when headspace volatile...
متن کاملIdentification and Discrimination of Herbicide Residues Using a Conducting Polymer Electronic nose
The identification of herbicide residues on crop foliage is necessary to make crop-management decisions for weed pest control and to monitor pesticide residue levels on food crops. Electronic-nose (e-nose) methods were tested as a cheaper, alternative means of discriminating between herbicide residue types (compared with conventional chromatography methods), by detection of headspace volatiles ...
متن کاملDetection of Off-Flavor in Catfish Using a Conducting Polymer Electronic-Nose Technology
The Aromascan A32S conducting polymer electronic nose was evaluated for the capability of detecting the presence of off-flavor malodorous compounds in catfish meat fillets to assess meat quality for potential merchantability. Sensor array outputs indicated that the aroma profiles of good-flavor (on-flavor) and off-flavor fillets were strongly different as confirmed by a Principal Component Anal...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1995
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.92.7.2652