Fe3O4@nitrogen-doped carbon core-double shell nanotubes as a novel and efficient nanosorbent for ultrasonic assisted dispersive magnetic solid phase extraction of heterocyclic pesticides from environmental soil and water samples

Z. Aladaghlo, A. Sahragard, A. Fakhari, N. Salarinejad, S. K. Movahed, M. Dabiri (2024) Microchimica Acta, 191, 98

https://doi.org/10.1007/s00604-023-06153-8

Abstract 

Fe₃O₄@nitrogen-doped carbon core-double shell nanotubes (Fe₃O₄@N-C C-DSNTs) were successfully synthesized and applied as a novel nanosorbent in ultrasonic assisted dispersive magnetic solid phase extraction (UA-DMSPE) of tribenuron-methyl, fenpyroximate, and iprodione. Subsequently, corona discharge ion mobility spectrometry (CD-IMS) was employed for the detection of the extracted analytes. Effective parameters on the extraction recovery percentage (ER%) were systematically investigated and optimized. Under optimal conditions, UA-DMSPE-CD-IMS demonstrated remarkable linearity in different ranges within 1.0 – 700 ng mL⁻¹ with correlation coefficients exceeding 0.993, repeatability values below 6.9%, limits of detection ranging from 0.30 to 0.90 ng mL⁻¹, high preconcentration factors (418 - 435), and ER% values (83 – 87%). The potential of the proposed method was further demonstrated by effectively determining the targeted pesticides in various environmental soil and water samples, exhibiting relative recoveries in the range 92.1 – 102%.