Alternating Layers of Iron(III) Tetra(N-methyl-4-pyridyl)-porphyrin and Copper Tetrasulfonated Phthalocyanine for Amperometric Detection of 4-Nitrophenol in Nanomolar Levels

✍ Scribed by Phabyanno Rodrigues Lima; Wilney de Jesus Rodrigues Santos; Marília Oliveira Fonseca Goulart; Auro Atsushi Tanaka; Sônia Maria Carvalho Neiva Tanaka; Lauro Tatsuo Kubota

• Book ID: 102831010
• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 653 KB
• Volume: 20
• Category: Article
• ISSN: 1040-0397
• DOI: 10.1002/elan.200804330

✦ Synopsis

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.