A bio-inspired sensor based on surfactant film and Pd nanoparticles.
Analyst
; 138(2): 509-17, 2013 Jan 21.
Article
em En
| MEDLINE
| ID: mdl-23166910
ABSTRACT
A bio-inspired complex, [(bpbpmp)Fe(III)(m-OAc)(2)Cu(II)](ClO(4)), was combined with a zwitterionic surfactant (ImS3-14) stabilizing pre-formed palladium nanoparticles and coated on a glassy carbon electrode (GCE). This bio-inspired surfactant film was capable of catalyzing redox reactions of dihydroxybenzenes, thus allowing the simultaneous electrochemical quantification of CC and HQ in cigarette residue samples by square-wave voltammetry (SWV). The best experimental conditions were obtained using phosphate buffer solution (0.1 mol L(-1), pH 7.0), with 1.3 nmol of the bio-inspired complex, 0.15 µmol of the surfactant and 1.08 nmol of Pd. The best voltammetric parameters were frequency 100 Hz, pulse amplitude 40 mV and step potential 8 mV. The limits of detection calculated from simultaneous curves were found to be 2.2 × 10(-7) and 2.1 × 10(-7) mol L(-1) for HQ and CC respectively.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Técnicas Biossensoriais
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Catecóis
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Fenol
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Poluentes Ambientais
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Hidroquinonas
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article