Fabrication of Nanocomposite Containing Naphthoquinone and Nanogold Supported on Poly(2,6-pyridinedicarboxylic acid) Film for Voltammetric Determination of N-Acetyl-L-Cysteine
✍ Scribed by Jahan Bakhsh Raoof; Reza Ojani; Fereshteh Chekin; Mohsen Jahanshahi; Sahar Rashid-Nadimi
- Book ID
- 102180609
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 256 KB
- Volume
- 21
- Category
- Article
- ISSN
- 1040-0397
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✦ Synopsis
A modified electrode was fabricated by grafting of poly (2,6-pyridinedicarboxylic acid) film (PDC) by electropolymerization of 2,6-pyridinedicarboxylic acid on the glassy carbon electrode (GCE). Then, gold nanoparticles (NG) and 1,2-naphthoquinone-4-sulfonic acid sodium (Nq) were immobilized on the PDC/GCE to prepare Nq/NG/PDC/ GCE by immersing electrode into NG and Nq solution, respectively. The Nq species on NG/PDC/GCE could catalyze electrooxidation of N-acetyl-l-cysteine (NAC) with lowering the over potential by about 600 mV. This method used for detection of NAC in dynamic range from 4.0 Â 10 À6 M to 1.30 Â 10 À4 M with a detection of limit (2s) 8.0 Â 10 À7 M.