{"title":"一种用于CrVI的聚吡咯涂层压电传感器。初步结果","authors":"E. Desimoni, I. Bassani","doi":"10.1039/A809667H","DOIUrl":null,"url":null,"abstract":"The piezoresonators of a quartz-crystal microbalance were surface-coated with electropolymerised polypyrrole films. After potentiostatic reduction at –0.9 V, the reduced PPy-coated resonators were allowed to react with solutions containing different concentrations of CrVI. Mass changes of the polymer film, originated by ionic transfer during the oxidation reaction of PPy by hexavalent chromium, produced frequency shifts proportional to the concentration of CrVI. Also, frequency shifts were obtained by reaction of some antioxidants at oxidised PPy-coated resonators. The observed responses depend on several experimental parameters.","PeriodicalId":7814,"journal":{"name":"Analytical Communications","volume":"69 1","pages":"45-46"},"PeriodicalIF":0.0000,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":"{\"title\":\"A polypyrrole-coated, piezoelectric sensor for CrVI. Preliminary results\",\"authors\":\"E. Desimoni, I. Bassani\",\"doi\":\"10.1039/A809667H\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The piezoresonators of a quartz-crystal microbalance were surface-coated with electropolymerised polypyrrole films. After potentiostatic reduction at –0.9 V, the reduced PPy-coated resonators were allowed to react with solutions containing different concentrations of CrVI. Mass changes of the polymer film, originated by ionic transfer during the oxidation reaction of PPy by hexavalent chromium, produced frequency shifts proportional to the concentration of CrVI. Also, frequency shifts were obtained by reaction of some antioxidants at oxidised PPy-coated resonators. The observed responses depend on several experimental parameters.\",\"PeriodicalId\":7814,\"journal\":{\"name\":\"Analytical Communications\",\"volume\":\"69 1\",\"pages\":\"45-46\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1999-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"8\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Analytical Communications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1039/A809667H\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Analytical Communications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1039/A809667H","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A polypyrrole-coated, piezoelectric sensor for CrVI. Preliminary results
The piezoresonators of a quartz-crystal microbalance were surface-coated with electropolymerised polypyrrole films. After potentiostatic reduction at –0.9 V, the reduced PPy-coated resonators were allowed to react with solutions containing different concentrations of CrVI. Mass changes of the polymer film, originated by ionic transfer during the oxidation reaction of PPy by hexavalent chromium, produced frequency shifts proportional to the concentration of CrVI. Also, frequency shifts were obtained by reaction of some antioxidants at oxidised PPy-coated resonators. The observed responses depend on several experimental parameters.