Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1567, Issue -, Pages 73-80Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2018.07.001
Keywords
M-D mu SPE; Organochlorine pesticide; ZnFe2O4/carbon
Funding
- Natural Science Foundation of Fujian Province [2015J01058]
- NFFTBS [J1310024]
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In this study, porous ZnFe2O4/carbon, derived from Zn-Fe zeolitic imidazolate framework (Zn-Fe-ZIF), was employed as a novel sorbent for magnetic-assisted dispersive miniaturized solid phase extraction (M-D mu SPE). The Zn-Fe-ZIF derived magnetic porous ZnFe2O4/carbon was easily prepared using a one pot solvothermal method, and its morphology, structure and magnetic characteristics were evaluated via scanning electron microscopy, powder X-ray diffraction, Raman spectroscopy and vibrating sample magnetometry. The extraction ability of ZnFe2O4/carbon is evaluated by different kinds of compounds including organochlorine pesticides, pyrethroid insecticides, aldehydes, nerolidol, benzoic acid and sorbic acid. AM-D mu SPE method was developed for the analysis of organochlorine pesticides. Several parameters affecting the extraction efficiency were systematically investigated. The calibration curves ranged from 0.05 to 100 ng g(-1) and the limits of detection were 0.005-0.3 ng g(-1). The intra-day and inter-day relative standard deviations were lower than 2.3 and 5.2%. The recoveries of spiked organochlorine pesticides were in the range of 86.1-109.4%. (C) 2018 Elsevier B.V. All rights reserved.
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