کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7585581 1492038 2018 29 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A magnetic controllable tool for the selective enrichment of dimethoate from olive oil samples: A responsive molecular imprinting-based approach
ترجمه فارسی عنوان
یک ابزار کنترل مغناطیسی برای غنی سازی انتخابی از دی متیوات از نمونه های روغن زیتون: یک رویکرد مبتنی بر شناسایی مولکولی پاسخگو
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Aiming to develop a straightforward magnetic-based sample preparation methodology for the selective extraction of dimethoate from olive oil, the synthesis of dimethoate-imprinted polymer on the surface of modified magnetic nanoparticles has been attempted. Molecular recognition assays have proven their suitability for the selective pre-concentration of dimethoate. Mechanistic basis for template selective recognition has been explored using a quantum chemical approach, providing new insights about the mechanisms underlying template recognition. Thus, a magnetic molecularly imprinted solid-phase extraction method was developed allowing the extraction of dimethoate from spiked olive oil samples, at levels similar to the maximum residue limits imposed by legislation, followed by the quantification of their levels by high-performance liquid chromatography with diode-array detection. Recoveries of 94.55% were obtained, with relative standard deviations lower than 0.53% (n = 3). The developed sample preparation technique enables a selective pre-concentration/enrichment of dimethoate from olive oil matrix with minimum handling and less solvent consumption.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 254, 15 July 2018, Pages 309-316
نویسندگان
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