title: Magnetic mixed hemimicelles dispersive solid-phase extraction based on ionic liquid-coated attapulgite/polyaniline-polypyrrole/Fe3O4nanocomposites for determination of acaricides in fruit juice prior to high-performance liquid chromatography-diode array detection.
abstract: In this research, a novel method using magnetic mixed hemimicelles dispersive solid-phase extraction (MMHDSPE) based on C16mimBr-coated attapulgite/polyaniline-polypyrrole/Fe3O4(ATP/PANI-PPY/Fe3O4) nanocomposites were investigated for enrichment and separation of three acaricides in fruit juice. In this method, we combined the simplicity and speed of dispersive solid-phase extraction, the advantages of mixed hemimicelles and the facility of the phase separation of the magnetic nanoparticles to develop a simple, rapid, sensitive, and effective method for detecting target analytes from the juice samples. ATP/PANI-PPY/Fe3O4nanocomposites were successfully synthesized using a one-pot method. The as-prepared nanocomposite sorbents were characterized by Fourier transform infrared spectra (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The experimental factors affecting the extraction efficiency including the sorbent type, amount of ATP/PANI-PPY/Fe3O4nanocomposites, volume of ILs, sonication time, pH, and desorption conditions were optimized. Under the optimal conditions, good linearity was observed for all target analytes, with correlation coefficients (r2) ranging from 0.9994 to 0.9999; the limits of detection (LOD) were in the range of 0.16-0.57μgL-1, and the recoveries of analytes using the proposed method ranged between 88.67% and 95.10%. The sorbents exhibited excellent repeatability in the range of 1.83-4.24% in extracting the three target analytes. In addition, the intra-day and inter-day precision values were found to be in the range of 0.19-6.24% and 2.23-8.36%, respectively. The method was successfully applied to analyze fruit juice samples by rapid preconcentration of acaricides.
authors.affiliation: Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
authors.forename: Xiaoling
authors.initials: X
authors.lastname: Yang
authors.affiliation: Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
authors.forename: Kexin
authors.initials: K
authors.lastname: Qiao
authors.affiliation: Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Liu
authors.affiliation: Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
authors.forename: Xiaoling
authors.initials: X
authors.lastname: Wu
authors.affiliation: Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
authors.forename: Miyi
authors.initials: M
authors.lastname: Yang
authors.affiliation: Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.affiliation: Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
authors.forename: Haixiang
authors.initials: H
authors.lastname: Gao
authors.affiliation: Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
authors.forename: Sanbing
authors.initials: S
authors.lastname: Zhang
authors.affiliation: Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
authors.forename: Wenfeng
authors.initials: W
authors.lastname: Zhou
authors.affiliation: Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China. Electronic address: rhlu@cau.edu.cn.
authors.forename: Runhua
authors.initials: R
authors.lastname: Lu
mesh_terms: D056810:Acaricides / Q000032:analysis* / Q000302:isolation & purification*; D000814:Aniline Compounds / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation*; D005506:Food Contamination / Q000032:analysis; D000067030:Fruit and Vegetable Juices / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D052578:Ionic Liquids / Q000737:chemistry*; D017616:Magnesium Compounds / Q000737:chemistry; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D008823:Micelles; D053761:Nanocomposites / Q000737:chemistry*; D009994:Osmolar Concentration; D011108:Polymers / Q000737:chemistry; D011758:Pyrroles / Q000737:chemistry; D017655:Silicon Compounds / Q000737:chemistry; D013997:Time Factors
chemical_list: D056810:Acaricides; D000814:Aniline Compounds; D052578:Ionic Liquids; D017616:Magnesium Compounds; D058185:Magnetite Nanoparticles; D008823:Micelles; D011108:Polymers; D011758:Pyrroles; D017655:Silicon Compounds; C416807:polyaniline; C067635:polypyrrole; C026325:attapulgite
keywords: Acaricides; Attapulgite/polyaniline-polypyrrole/Fe(3)O(4); Fruit juice; Ionic liquid; Magnetic mixed hemimicelles dispersive solid-phase extraction