Facile synthesis of β-cyclodextrin decorated Super P Li carbon black for the electrochemical determination of methyl parathion

ABSTRACTHerein, a novel electrochemical sensor was designed for the sensitive determination of methyl parathion (MP) using the Super P Li carbon black@β-cyclodextrin (SPLCB@β-CD) decorated glassy carbon electrode (GCE). SPLCB with high electroactive area exhibited exceptional conductivity and good dispersive property, which is beneficial for forming the interlinked conductive network structure. β-CD could not only promote the uniform dispersion of SPLCB but also effectively realise the enrichment of MP molecules. Moreover, the existence of SPLCB could make up for the defect of poor conductivity of β-CD. Under the optimal experimental condition (pH = 7.0, enrichment time: 60 s). The collaborative cooperation of SPLCB and β-CD achieved the excellent MP detection property (LOD: 8.6 nM; concentration range: 0.01–10 μM). The SPLCB@β-CD/GCE sensor exhibited acceptable repeatability and reproducibility. In addition, the proposed sensor was successfully employed to detect MP in apple juice (Recoveries: 98.0–98.6%, RSD values: 3.68–4.63%).KEYWORDS: Electrochemical sensing analysisMethyl parathionConductive carbonCompositeSynergistic effect AcknowledgmentsThis work was financially supported by the Research Project of Science and Technology of Henan Province (No. 232102110267), Postdoctoral Research Project of Henan Province (No. 202102098), High-Level Talents Introduction Project of Henan Institute of Science and Technology (No. 203010617011).Disclosure statementNo potential conflict of interest was reported by the authors.Additional informationFundingThis work was financially supported by the Research Project of Science and Technology of Henan Province (No. 232102110267), Postdoctoral Research Project of Henan Province (No. 202102098), High-Level Talents Introduction Project of Henan Institute of Science and Technology (No. 203010617011).