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 alternatives to develop water quality sensors with higher selectivity to obtain the desired performance during real-time deployment. Quantification technologies involving interface materials of distinguishing capacity at elevated matrix complexity are desirable. However, there remains a challenge in designing suitable techniques, methodologies, and appropriate validations to support the grounds for the selection of interface materials of enhanced selectivity. The ability to monitor chlorpyrifos in analytical and commercial grade compounds and in the water matrix using an interface material of suitable states is the focus of this work. Herein, N-(2-hydroxyethyl) ethylenediamine triacetic acid trisodium (N-(2-C₂H₅O) ED­(CH₃COONa)₃) incorporated with functionalized multiwalled carbon nanotube (f-MWCNT) is reported to provide thermodynamically favorable charge transfer for the quantification of chlorpyrifos residues under varying internal and external conditions with appropriate validations using density functional theory (DFT) and high-performance liquid chromatography (HPLC). The sensor exhibited excellent figures of merit such as limit of detection (LOD) and limit of quantitation (LOQ) of 9.7 pM and 29.4 pM, respectively.