NDLI: Voltammetric determination of sulfonamides using paste electrodes based on various carbon nanomaterials

Content Provider	Springer Nature Link
Author	Ait Lahcen, Abdellatif Ait Errayess, Sophia Amine, Aziz
Copyright Year	2016
Abstract	The authors have performed a comparative study of the performance of various carbonaceous material-based electrochemical sensors in order to identify the most appropriate sensor for determination of sulfonamides. The electro-oxidative power of carbon paste electrodes prepared using carbon black, graphite, carbon nanopowder, acetylene black, multiwalled carbon nanotubes and glassy carbon powder was investigated by square-wave voltammetry at pH 6.0 using sulfamethoxazole (SMX) as the model analyte. It is found that carbon paste electrodes prepared with graphite or carbon nanopowder and operated at a voltage of 0.93 (vs. Ag/AgCl) display the highest sensitivity and lowest detection limit. Next, the sulfonamides sulfadiazine, sulfacetamide, sulfadimethoxine, sulfathiazole, sulfamethiazole and sulfamerazine were also tested. The voltammetric response is linear in the 1 to 75 μM concentrations range, with detection limits range from 0.4 to 1.2 μM, and sensitivities were between 10 and 38 nA⋅μM−1. The carbon nanopowder paste electrode (CNPE) showed the lowest detection limit (0.12 μM) for SMX and was successfully applied to its determination in (spiked) water samples and in pharmaceutical formulation. Graphical abstract Schematic illustration of the preparation of paste electrodes based on nanoparticles for use in voltammetric determination of sulfonamides
Starting Page	2169
Ending Page	2176
Page Count	8
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	183
Issue Number	7
e-ISSN	14365073
Language	English
Publisher	Springer Vienna
Publisher Date	2016-04-28
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Electroanalysis Carbon black Graphite Carbon nanopowder Acetylene black Multiwalled carbon nanotubes Glassy carbon powder Linear sweep voltammetry Square-wave voltammetry Drug analysis Nanochemistry Nanotechnology Characterization and Evaluation of Materials Analytical Chemistry Microengineering
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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