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Magnetic solid‐phase extraction of pyrethroid pesticides in environmental water samples with CoFe 2 O 4 ‐embedded porous graphitic carbon nanocomposites
Author(s) -
Ma Kaixuan,
Zhang Meixing,
Miao Shengchao,
Gu Xinyue,
Li Nan,
Cui Shihai,
Yang Jing
Publication year - 2018
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201800217
Subject(s) - solid phase extraction , extraction (chemistry) , nanocomposite , nanomaterials , materials science , chemistry , chromatography , chemical engineering , nanotechnology , engineering
Magnetic CoFe 2 O 4 ‐embedded porous graphitic carbon nanocomposites were prepared through a facile solid‐phase thermal reaction with NaCl as a template. The material was applied in the magnetic solid‐phase extraction process coupled with high performance liquid chromatography with a diode array detector to detect the trace fenpropathrin, cyhalothrin, S‐fenvalerate, and bifenthrin in different water samples. The synthesis conditions of nanomaterial including glucose concentration and calcination time on extraction performance for pyrethroid pesticides have been investigated. Different magnetic solid‐phase extraction parameters have been studied, such as the nanomaterial amount, solution pH, eluent types, adsorption time, and the reusability. Under the optimum conditions, good recoveries (80.2–110.9%) were achieved with relative standard deviations of 0.2–5.8%. There are probably hydrophobic interactions and dipole–dipole attractions between nanocomposites and the analytes.