PMID- 33074405
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20210817
LR  - 20210817
IS  - 1436-5073 (Electronic)
IS  - 0026-3672 (Linking)
VI  - 187
IP  - 11
DP  - 2020 Oct 19
TI  - Magnetic hollow bimetallic zinc/cobalt zeolitic imidazolate framework as sorbent 
      for efficiently enriching aflatoxins combined with UHPLC-IT-MS(n) determination.
PG  - 617
LID - 10.1007/s00604-020-04533-y [doi]
AB  - A novel magnetic hollow bimetallic zinc/cobalt-based zeolitic imidazolate 
      framework (MHB-Zn/Co-ZIF-8) was prepared via a microwave-assisted chemical 
      etching in methanol. The structure, morphology, and specific surface area were 
      characterized by X-ray diffraction and FTIR spectroscopy, scanning and 
      transmission electron microscopy, and N(2) adsorption. The hollow nanostructures 
      with high internal specific surface area, abundant active sites, and reduced 
      aggregation of nanoparticles endow the hollow zeolitic imidazolate framework 
      (ZIF) nanoparticle with high chemical stability, desirable durability, and 
      excellent adsorption abilities. The MHB-Zn/Co-ZIF-8 nanoparticle was used as an 
      effective sorbent for magnetic solid-phase extraction (MSPE) of trace aflatoxins 
      B(1), B(2), G(1), and G(2) from fruit juice and fruit samples. The main 
      parameters affecting the efficiency of MSPE procedures were investigated and 
      optimized. The results show that, under optimized conditions, enrichment factors 
      ranging from 67- to 355-fold are obtained for the target analytes. The method is 
      linear in the range 1.0 to 100.0 ng mL(-1) with correlation coefficients (R(2)) 
      from 0.9960 to 0.9992. The limits of detection of four aflatoxins are in the 
      range 0.18 to 1.50 ng mL(-1) and the average recoveries range from 75.1 to 
      102.4%, with relative standard deviations (RSDs) less than 13.6%. This work 
      presents the excellent extraction performance of aflatoxins B(1), B(2), G(1), and 
      G(2) on MHB-Zn/Co-ZIF-8. In addition, the applicability of the MSPE coupling with 
      ultrahigh-performance liquid chromatography-ion trap tandem mass spectrometry 
      (UHPLC-IT-MS(n)) for trace analysis in complex matrices is shown. Graphical 
      abstract Schematic presentation of magnetic hollow bimetallic zinc/cobalt 
      zeolitic imidazolate framework as sorbent for efficiently enriching aflatoxins 
      B(1), B(2), G(1), and G(2) from fruit juice samples prior to 
      ultrahigh-performance liquid chromatography-ion trap tandem mass spectrometry 
      (UHPLC-IT-MS(n)) determination.
FAU - Wang, Zelan
AU  - Wang Z
AD  - State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical 
      Engineering, College of Chemistry and Chemical Engineering, Ningxia University, 
      Yinchuan, 750021, China.
FAU - Meng, Zhe
AU  - Meng Z
AUID- ORCID: 0000-0003-1080-0928
AD  - State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical 
      Engineering, College of Chemistry and Chemical Engineering, Ningxia University, 
      Yinchuan, 750021, China. meng_z@nxu.edu.cn.
FAU - Zhao, Mengxin
AU  - Zhao M
AD  - State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical 
      Engineering, College of Chemistry and Chemical Engineering, Ningxia University, 
      Yinchuan, 750021, China.
FAU - Men, Xiuqin
AU  - Men X
AD  - State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical 
      Engineering, College of Chemistry and Chemical Engineering, Ningxia University, 
      Yinchuan, 750021, China.
FAU - Yang, Jinhui
AU  - Yang J
AD  - State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical 
      Engineering, College of Chemistry and Chemical Engineering, Ningxia University, 
      Yinchuan, 750021, China. yang_jh@nxu.edu.cn.
FAU - Li, Jiguang
AU  - Li J
AD  - State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical 
      Engineering, College of Chemistry and Chemical Engineering, Ningxia University, 
      Yinchuan, 750021, China.
LA  - eng
GR  - No. 21768003/National Natural Science Foundation of China/
GR  - No. 21966024/National Natural Science Foundation of China/
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20201019
PL  - Austria
TA  - Mikrochim Acta
JT  - Mikrochimica acta
JID - 7808782
SB  - IM
OTO - NOTNLM
OT  - Aflatoxins
OT  - Fruit juice
OT  - Hollow cavity structures
OT  - Magnetic solid-phase extraction (MSPE)
OT  - Zeolitic imidazolate framework
EDAT- 2020/10/20 06:00
MHDA- 2020/10/20 06:01
CRDT- 2020/10/19 12:24
PHST- 2020/04/30 00:00 [received]
PHST- 2020/08/27 00:00 [accepted]
PHST- 2020/10/19 12:24 [entrez]
PHST- 2020/10/20 06:00 [pubmed]
PHST- 2020/10/20 06:01 [medline]
AID - 10.1007/s00604-020-04533-y [pii]
AID - 10.1007/s00604-020-04533-y [doi]
PST - epublish
SO  - Mikrochim Acta. 2020 Oct 19;187(11):617. doi: 10.1007/s00604-020-04533-y.