PMID- 36610188
OWN - NLM
STAT- MEDLINE
DCOM- 20230124
LR  - 20230201
IS  - 1873-3778 (Electronic)
IS  - 0021-9673 (Linking)
VI  - 1689
DP  - 2023 Jan 25
TI  - Multi-magnetic center ionic liquids for dispersive liquid-liquid microextraction 
      coupled with in-situ decomposition based back-extraction for the enrichment of 
      parabens in beverage samples.
PG  - 463771
LID - S0021-9673(22)00962-1 [pii]
LID - 10.1016/j.chroma.2022.463771 [doi]
AB  - In this paper, several new multi-magnetic center magnetic ionic liquids (MMILs) 
      were prepared with paramagnetic component simultaneously contained in both the 
      cation and anion and used as extractants to establish a dispersive liquid-liquid 
      microextraction (DLLME) approach followed by in-situ MMIL decomposition based 
      back-extraction for the enrichment and determination of four parabens in 
      beverages. The appropriate MMIL was selected by investigating the extraction 
      performances of the obtained MMILs combined with high performance liquid 
      chromatography-ultraviolet detection (HPLC-UV), and some other experimental 
      factors were explored. Under the optimized DLLME conditions, the four parabens 
      exhibited coefficients of determination (R(2)) above 0.9987 in the linear range 
      of 0.1-500 ng.mL(-1) for ethylparaben, propylparaben and butylparaben and 
      0.2-500 ng.mL(-1) for methylparaben. The limits of detection (LODs) and limits of 
      quantification (LOQs) were respectively within 0.03-0.06 ng.mL(-1) and 
      0.1-0.2 ng.mL(-1), and the relative standard deviations (RSDs) for intra-day and 
      inter-day precision were below 10.8%. Moreover, the application of the developed 
      MMIL-based DLLME method in beverage samples exhibited recoveries within 
      81.3%-112.1% with RSDs of 0.3%-13.1% at three different spiked levels.
CI  - Copyright (c) 2022 Elsevier B.V. All rights reserved.
FAU - Qiao, Lizhen
AU  - Qiao L
AD  - State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 
      116023, China; School of Chemical Engineering, Dalian University of Technology, 
      Panjin 124221, China. Electronic address: qiaolz@dlut.edu.cn.
FAU - Tao, Yuan
AU  - Tao Y
AD  - State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 
      116023, China; School of Chemical Engineering, Dalian University of Technology, 
      Panjin 124221, China.
FAU - Qin, Honglin
AU  - Qin H
AD  - State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 
      116023, China; School of Chemical Engineering, Dalian University of Technology, 
      Panjin 124221, China.
FAU - Niu, Ruiting
AU  - Niu R
AD  - State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 
      116023, China; School of Chemical Engineering, Dalian University of Technology, 
      Panjin 124221, China.
LA  - eng
PT  - Journal Article
DEP - 20221230
PL  - Netherlands
TA  - J Chromatogr A
JT  - Journal of chromatography. A
JID - 9318488
RN  - 0 (Ionic Liquids)
RN  - 0 (Parabens)
SB  - IM
MH  - *Ionic Liquids
MH  - Parabens/analysis
MH  - *Liquid Phase Microextraction/methods
MH  - Chromatography, High Pressure Liquid/methods
MH  - Limit of Detection
MH  - Magnetic Phenomena
MH  - Beverages/analysis
OTO - NOTNLM
OT  - Back-extraction
OT  - Dispersive liquid-liquid extraction
OT  - Multi-magnetic center magnetic ionic liquids
OT  - Parabens
COIS- Declaration of Competing Interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2023/01/08 06:00
MHDA- 2023/01/25 06:00
CRDT- 2023/01/07 18:06
PHST- 2022/08/04 00:00 [received]
PHST- 2022/12/28 00:00 [revised]
PHST- 2022/12/29 00:00 [accepted]
PHST- 2023/01/08 06:00 [pubmed]
PHST- 2023/01/25 06:00 [medline]
PHST- 2023/01/07 18:06 [entrez]
AID - S0021-9673(22)00962-1 [pii]
AID - 10.1016/j.chroma.2022.463771 [doi]
PST - ppublish
SO  - J Chromatogr A. 2023 Jan 25;1689:463771. doi: 10.1016/j.chroma.2022.463771. Epub 
      2022 Dec 30.