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Type: Artigo de periódico
Title: Alternating Layers Of Iron(iii) Tetra(n-methyl-4-pyridyl) -porphyrin And Copper Tetrasulfonated Phthalocyanine For Amperometric Detection Of 4-nitrophenol In Nanomolar Levels
Author: Lima P.R.
Santos W.D.J.R.
Goulart M.O.F.
Tanaka A.A.
Tanaka S.M.C.N.
Kubota L.T.
Abstract: The present work describes the development of a highly sensitive amperometric sensor for 4-NP in nanomolar levels using a glassy carbon electrode modified with alternating layers of CuTSPc and FeT4MPyP. After optimizing the operational conditions, the sensor provided a linear response range for 4-NP from 5 up to 100 nmol L-1 with sensitivity, detection, and quantification limits of 14 nA L nmol-1, 1.9 nmol L-1, and 5.4 nmol L-1, respectively. The proposed sensor showed a stable response for at least 200 successive determinations. This modified electrode can be used to the determination of 4-NP in water samples. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
Rights: fechado
Identifier DOI: 10.1002/elan.200804330
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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