Quantification of Chlorpyrifos Residues in Water under Thermodynamically Favorable Electrodics Using the f-MWCNT/N-(2-C₂H₅O) ED(CH₃COONa)₃ Composite of Superior Selectivity

Researchers are continually seeking potential alternativesto developwater quality sensors with higher selectivity to obtain the desiredperformance during real-time deployment. Quantification technologiesinvolving interface materials of distinguishing capacity at elevatedmatrix complexity are desirable. However, there remains a challengein designing suitable techniques, methodologies, and appropriate validationsto support the grounds for the selection of interface materials ofenhanced selectivity. The ability to monitor chlorpyrifos in analyticaland commercial grade compounds and in the water matrix using an interfacematerial of suitable states is the focus of this work. Herein, N-(2-hydroxyethyl)ethylenediamine triacetic acid trisodium (N-(2-C2H5O) ED-(CH3COONa)(3)) incorporated withfunctionalized multiwalled carbon nanotube (f-MWCNT) is reported toprovide thermodynamically favorable charge transfer for the quantificationof chlorpyrifos residues under varying internal and external conditionswith appropriate validations using density functional theory (DFT)and high-performance liquid chromatography (HPLC). The sensor exhibitedexcellent figures of merit such as limit of detection (LOD) and limitof quantitation (LOQ) of 9.7 pM and 29.4 pM, respectively.