One-step preparation of porous copper nanowires electrode for highly sensitive and stable amperometric detection of glyphosate
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Abstract
A simple and sensitive amperometric method for the detection of glyphosate based on a porous copper nanowire electrode is presented. The porous nanowires were fabricated simply by a one-step electrodeposition using hydrogen bubbles generated during the deposition to produce pores. These porous nanowires provided a 1.4 times larger surface area than a porous copper film. After the fabrication process the porous copper nanowires can be applied directly as a working electrode with the same custom-built flow cell. The detection was carried out by measuring the oxidation signal of copper; this increased with the concentration of glyphosate due to dissolution of the copper from the electrode. Under optimal conditions, the responses of the sensor were linear between 0.010-5.0 μmol L−1, with a limit of detection of 10.0 nmol L−1 (S/N = 3). The large surface area of the electrode minimised the corrosion effect, as observed by the remarkably stable response (95 injections of 0.20 μmol L−1 of glyphosate were possible). When applied in order to detect glyphosate in fresh fruit and vegetable samples, the concentrations were found in the range of non-detectable to (0.104 ± 0.005) μmol L−1. These results indicated that the fabrication process can be used to produce a new form of working electrode for glyphosate detection.
References
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© 2015 Institute of Chemistry, Slovak Academy of Sciences
Articles in the same Issue
- One-step preparation of porous copper nanowires electrode for highly sensitive and stable amperometric detection of glyphosate
- Classification of wine distillates using multivariate statistical methods based on their direct GC-MS analysis
- Determination of cigarette papers moisture content by gas chromatography
- Flavonoids inhibiting glycation of bovine serum albumin: affinity–activity relationship
- Treatment of natural rubber latex serum waste by co-digestion with macroalgae, Chaetomorpha sp. and Ulva intestinalis, for sustainable production of biogas
- Physicochemical aspects of Trichosporon cutaneum CCY 30-5-10 adhesion and biofilm formation potential on cellophane
- Immobilisation of Aspergillus oryzae α-amylase and Aspergillus niger glucoamylase enzymes as cross-linked enzyme aggregates
- Dissolution kinetics of cerussite in an alternative leaching reagent for lead
- Preparation of quaternary pyridinium salts as possible proton conductors
- Stable UV absorption material synthesized by intercalation of squaric acid anion into layered double hydroxides
- Electrolytic preparation of nanosized Cu/Ni–Cu multilayered coatings
- Efficient solvent-free synthesis of bis(indolyl)methanes on SiO2 solid support under microwave irradiation
- Facile and direct synthesis of symmetrical acid anhydrides using a newly prepared powerful and efficient mixed reagent
- Practical synthesis of 2,3-dimethoxy-5-hydroxymethyl-6-methyl-1,4-benzoquinone
- Conversion of phenylacetonitrile in supercritical alcohols within a system containing small volume of water
Articles in the same Issue
- One-step preparation of porous copper nanowires electrode for highly sensitive and stable amperometric detection of glyphosate
- Classification of wine distillates using multivariate statistical methods based on their direct GC-MS analysis
- Determination of cigarette papers moisture content by gas chromatography
- Flavonoids inhibiting glycation of bovine serum albumin: affinity–activity relationship
- Treatment of natural rubber latex serum waste by co-digestion with macroalgae, Chaetomorpha sp. and Ulva intestinalis, for sustainable production of biogas
- Physicochemical aspects of Trichosporon cutaneum CCY 30-5-10 adhesion and biofilm formation potential on cellophane
- Immobilisation of Aspergillus oryzae α-amylase and Aspergillus niger glucoamylase enzymes as cross-linked enzyme aggregates
- Dissolution kinetics of cerussite in an alternative leaching reagent for lead
- Preparation of quaternary pyridinium salts as possible proton conductors
- Stable UV absorption material synthesized by intercalation of squaric acid anion into layered double hydroxides
- Electrolytic preparation of nanosized Cu/Ni–Cu multilayered coatings
- Efficient solvent-free synthesis of bis(indolyl)methanes on SiO2 solid support under microwave irradiation
- Facile and direct synthesis of symmetrical acid anhydrides using a newly prepared powerful and efficient mixed reagent
- Practical synthesis of 2,3-dimethoxy-5-hydroxymethyl-6-methyl-1,4-benzoquinone
- Conversion of phenylacetonitrile in supercritical alcohols within a system containing small volume of water
