NiFe-LDH/nylon 6 composite electrospun on polypropylene membrane: A new extractive device development for porous membrane protected micro-solid-phase extraction of organophosphate pesticides from fresh fruit juice samples coupled with liquid chromatography tandem mass analysis

Abstract

A unique strategy for developing porous membrane protected micro-solid phase extraction has been provided. An electrospun composite was fabricated on the sheet of membrane. To this end, NiFe-layered double hydroxide/Nylon 6 composite nanofibers were coated on a polypropylene membrane sheet followed by folding into a pocket shape, which were then utilized as a novel extractive device to extract of organophosphorus pesticides from fresh fruit juice samples prior to liquid chromatography–tandem mass spectrometry (LC–MS/MS) analysis. The fabricated hybrid composites were successfully characterized. The effective parameters on extraction performance were investigated. LODs were 0.020–0.065 ng mL−1. Excellent linearity (R2≥0.996) was observed between 0.05 and 100.0 ng mL−1. RSDs% were in the range of 3.1–5.8% (intra-day, n = 3) and 2.6–5.5% (inter-day, n = 3×3). Satisfactory related recovery values within the acceptable range of 90.7–111.2% with RSDs% below 6.7% were achieved for the analysis of real samples.