MIPs of Diuron Analysis Based on Screen-Printed Carbon Electrode Modification

Porntip Khownarumit; Kanmanee Choosang; Rungtiva P. Poo-Arporn

doi:10.4028/p-ZP57jw

Paper Titles

Preface

MIPs of Diuron Analysis Based on Screen-Printed Carbon Electrode Modification
p.3

Nanoindentation Study of AlN Thin Films Deposited on Sapphire and ITO/GLASS Substrates
p.9

The Fabrication of Free-Standing Anodic Aluminum Oxide on 5N and 6061 Aluminum Tube
p.15

Eggshell-Derived Magnetic CaAl Layered Double Hydroxides: Synthesis and Application as Methyl Orange Adsorbent
p.23

Effect of Citric Acid Treatment on Doxycycline Sorption of Chitosan Hydrogel
p.31

Synthesis and Performance Evaluation of an Amphiphilic Polymer Thickener for Enhanced Imbibition Fracturing Fluids
p.39

Synthesis of Environmentally Friendly Proline Mannich Quaternary Ammonium Salt and Its Acidification Corrosion Inhibition Performance
p.45

Effect of ZnCl₂ on the Performance of Antiscaling Nanoparticles for Long-Lasting Extrusion Injection
p.53

HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 180MIPs of Diuron Analysis Based on Screen-Printed...

MIPs of Diuron Analysis Based on Screen-Printed Carbon Electrode Modification

Abstract:

Pineapple and sugarcane monocultures are prevalent in Thailand, where growers often misuse pesticides and fertilizers during post-harvest soil preparation. The presence of herbicide residues poses a threat to the natural ecosystem and local communities. Diuron, a common herbicide, is frequently detected on pineapple farms. Although qualitative and quantitative tests are conducted to identify diuron, extracting it from contaminated soil remains a challenging and time-consuming process. This study employs electrochemistry to explore molecularly imprinted polymers (MIPs). Polypyrrole films are synthesized on a screen-printed carbon electrode (SPCE), using diuron as a template for creating MIPs. The findings identified optimal conditions for the synthesis of polypyrrole coatings o the working electrode, with adjustments made to the supply voltage and synthesis time for enhanced results. Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS) was utilized to characterize the physical surface of the electrode, while voltammetry was used to assess the dynamic behavior and performance of the electrochemical sensors. The sensor exhibited a linear sweep voltammetric current response ranging from 0.05 to 0.4 mM (R²=0.9746), with a detection limit of 0.05 mM and a sensitivity of 2.0441×10⁻⁶ A/mM for diuron. In comparison to other insecticides and inorganic salts, the MIPs demonstrated superior selectivity and electrochemical characteristics. The developed sensor effectively detected diuron in groundwater samples.