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|Type:||Artigo de periódico|
|Title:||Use of ruthenium-(ethylenedinitrito)-tetraacetic acid monohydrate ion immobilized on zirconium(IV) oxide coated silica gel surface as an amperometric sensor for oxygen in water|
|Abstract:||[Ru(edta)H2O](-) adsorbed on zirconium(IV) oxide coated on the surface of silica gel was used for the construction of an amperometric sensor for O-2 in water, using a carbon paste electrode. The adsorbed complex electrocatalyses the oxygen reduction reaction at -250 mV versus SCE. The cathodic current was linear for an oxygen concentration between 0.55 and 8.0 ppm, with a correlation coefficient of 0.998 and a relative standard deviation of 2.7%. The sensor response is constant within the solution pH values 2.0 and 6.5. The concentration of O-2 in a natural sample was also determined.|
|Editor:||Royal Soc Chemistry|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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