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A New Sensor for Ammonia Determination Based on Polypyrrole Films Doped with Dodecylbenzenesulfonate (DBSA) Ions

2002; Wiley; Volume: 14; Issue: 22 Linguagem: Inglês

10.1002/1521-4109(200211)14

1521-4109

Luiz Henrique Dall’Antônia, Márcio Vidotti, Susana I. Córdoba de Torresi, Roberto M. Torresi,

Electrochemical sensors and biosensors

ElectroanalysisVolume 14, Issue 22 p. 1577-1586 Feature Article A New Sensor for Ammonia Determination Based on Polypyrrole Films Doped with Dodecylbenzenesulfonate (DBSA) Ions Luiz H. Dall'Antonia, Luiz H. Dall'Antonia Instituto de Química, Universidade de São Paulo, C. P. 26077,05513-970-São Paulo (SP), BrazilSearch for more papers by this authorMarcio E. Vidotti, Marcio E. Vidotti Instituto de Química, Universidade de São Paulo, C. P. 26077,05513-970-São Paulo (SP), BrazilSearch for more papers by this authorSusana I. Córdoba de Torresi, Susana I. Córdoba de Torresi [email protected] Instituto de Química, Universidade de São Paulo, C. P. 26077,05513-970-São Paulo (SP), BrazilSearch for more papers by this authorRoberto M. Torresi, Roberto M. Torresi Instituto de Química de São Carlos, Universidade de São Paulo, C. P. 780,13560-970 – São Carlos (SP), BrazilSearch for more papers by this author Luiz H. Dall'Antonia, Luiz H. Dall'Antonia Instituto de Química, Universidade de São Paulo, C. P. 26077,05513-970-São Paulo (SP), BrazilSearch for more papers by this authorMarcio E. Vidotti, Marcio E. Vidotti Instituto de Química, Universidade de São Paulo, C. P. 26077,05513-970-São Paulo (SP), BrazilSearch for more papers by this authorSusana I. Córdoba de Torresi, Susana I. Córdoba de Torresi [email protected] Instituto de Química, Universidade de São Paulo, C. P. 26077,05513-970-São Paulo (SP), BrazilSearch for more papers by this authorRoberto M. Torresi, Roberto M. Torresi Instituto de Química de São Carlos, Universidade de São Paulo, C. P. 780,13560-970 – São Carlos (SP), BrazilSearch for more papers by this author First published: 28 November 2002 https://doi.org/10.1002/1521-4109(200211)14:22 3.0.CO;2-YCitations: 37AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Polypyrrole is the most widely used conducting polymer for sensors and biosensors construction once their conductivity and electroactivity do not strongly depend on the pH of the electrolyte. The aim of the present article is the improvement of amperometric ammonia determination, using dodecylbenzenesulfonate (DBSA) doped polypyrrole film. This large amphiphilic dopant promotes changes on the polymeric film leading to a more accentuated current and extending the linear response over a wide concentration range, when compared with films doped with small inorganic anions, such as chloride. The sensor's response was followed by EQCM and Raman spectroscopy experiments with the aim of elucidating the mechanism of ammonia detection. References 1 G. P. Wyers, R. P. Otjes, J. Slamina, Atmospherisc Environ. 1993, 27A, 2085. 2 C. Nylander, M. Armgarth, I. Lundström. Anal. Chem. Symp. Ser. 1983, 17, 203. 3 J. Miasik, A. Hooper, B. Tofield. J. Chem. Soc., Faraday Trans. I. 1986, 82, 1117. 4 M. Trojanowicz, W. Matuszewski, B. Szczpanzyk, A. Lewenstam. Uses of Immobilized Biologial Compounds ( ), Kluwer Academic, Dordrecht 1993, p. 141. 5 I. Lähdesmäki, A. Lewenstam, A. 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