Reza Siavashi; Hadi Beitollahi
Abstract
The molecularly imprinted polymer (MIP) sensor for the rapid and immediate detection of carbidopa (CD) has been investigated. Additionally, a voltammetric sensor based on MIP with a glassy carbon electrode (MIP/GCE) has been developed for CD detection. Under optimal conditions, we observed a strong linear ...
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The molecularly imprinted polymer (MIP) sensor for the rapid and immediate detection of carbidopa (CD) has been investigated. Additionally, a voltammetric sensor based on MIP with a glassy carbon electrode (MIP/GCE) has been developed for CD detection. Under optimal conditions, we observed a strong linear correlation between the sensor's peak current and CD concentrations ranging from 1.0 to 1000.0 μM, with a low limit of detection (LOD) of 0.3 μM (S/N = 3). The modified electrode demonstrated satisfactory electrocatalytic properties for CD oxidation, allowing the sensor to selectively detect CD even in the presence of high concentrations of similar compounds. Furthermore, it was confirmed that MIP/GCE effectively detected CD in urine samples.
Sayed Zia Mohammadi; Somayeh Tajik; Hadi Beitollahi; Zohreh Barani
Abstract
In the present study, the cysteamine electrochemical features were explored by La2O3/Co3O4 nanocomposite-modified screen printed electrode (La2O3/Co3O4/SPE) using voltammetry, chronoamperometry, and differential pulse voltammetry (DPV) techniques. The synthesized La2O3/Co3O4 nanocomposite qualities were ...
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In the present study, the cysteamine electrochemical features were explored by La2O3/Co3O4 nanocomposite-modified screen printed electrode (La2O3/Co3O4/SPE) using voltammetry, chronoamperometry, and differential pulse voltammetry (DPV) techniques. The synthesized La2O3/Co3O4 nanocomposite qualities were considered by SEM, FT-IR, and XRD analyses. Exploiting the modified SPE electrode with La2O3/Co3O4 nanocomposite, the cysteamine electrooxidation kinetics was significantly enhanced by reducing the anodic over-potential. The constructed La2O3/Co3O4/SPE revealed voltammetric reactions of high sensitivity for cysteamine, resulting in a highly appropriate means of trace levels cysteamine measurement. The electrooxidation peak currents for cysteamine were found to change linearly in relation to its concentrations (1.0–700.0 μM) in detection limit of 0.3 μM. La2O3/Co3O4/SPE was utilized for the cysteamine quantification in real specimens.
