PMID- 35483299
OWN - NLM
STAT- MEDLINE
DCOM- 20220524
LR  - 20220524
IS  - 1873-7072 (Electronic)
IS  - 0308-8146 (Linking)
VI  - 389
DP  - 2022 Sep 30
TI  - Sequential thin film-solid phase microextraction as a new strategy for addressing 
      displacement and saturation effects in food analysis.
PG  - 133038
LID - S0308-8146(22)01000-7 [pii]
LID - 10.1016/j.foodchem.2022.133038 [doi]
AB  - Solid-phase microextraction (SPME) is robust, selective, sensitive, and can be 
      automated. However, low extraction phase to sample volume ratio sometimes results 
      in saturation, competition, or swelling phenomena in complex samples. A 
      sequential extraction method using two thin-film SPME (TF-SPME) devices with 
      different selectivities was developed. The sequential application of the thin 
      films provided higher extraction capacities, while avoiding swelling, saturation, 
      and displacement effects, and enabled the quantitative determination of all 
      compounds in the analyzed samples, independent of their polarity and affinity to 
      extraction phases. In the first step, a TF-SPME device with a 
      poly(dimethylsiloxane) (PDMS) coating was used to deplete non-polar and other 
      compounds present at high concentrations in the sample, which are typically 
      associated with the undesirable phenomena. In the second step, a TF-SPME device 
      coated with a combination of hydrophobic/lipophilic balanced (HLB) particles and 
      PDMS (HLB/PDMS) was applied for the direct microextraction of the remaining 
      compounds, including polar compounds left over after the first step. The proposed 
      method resulted in decreased levels of interference and yielded encouraging 
      analytical data for beer samples.
CI  - Copyright (c) 2022 Elsevier Ltd. All rights reserved.
FAU - Wieczorek, Martyna N
AU  - Wieczorek MN
AD  - Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
FAU - Zhou, Wei
AU  - Zhou W
AD  - Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
FAU - Pawliszyn, Janusz
AU  - Pawliszyn J
AD  - Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada. 
      Electronic address: janusz@uwaterloo.ca.
LA  - eng
PT  - Journal Article
DEP - 20220421
PL  - England
TA  - Food Chem
JT  - Food chemistry
JID - 7702639
SB  - IM
MH  - *Food Analysis
MH  - Hydrophobic and Hydrophilic Interactions
MH  - *Solid Phase Microextraction/methods
OTO - NOTNLM
OT  - Beer
OT  - Food analysis
OT  - Sequential method
OT  - Solid phase microextraction
OT  - Thin film
EDAT- 2022/04/29 06:00
MHDA- 2022/05/25 06:00
CRDT- 2022/04/28 18:23
PHST- 2021/10/31 00:00 [received]
PHST- 2022/03/07 00:00 [revised]
PHST- 2022/04/19 00:00 [accepted]
PHST- 2022/04/29 06:00 [pubmed]
PHST- 2022/05/25 06:00 [medline]
PHST- 2022/04/28 18:23 [entrez]
AID - S0308-8146(22)01000-7 [pii]
AID - 10.1016/j.foodchem.2022.133038 [doi]
PST - ppublish
SO  - Food Chem. 2022 Sep 30;389:133038. doi: 10.1016/j.foodchem.2022.133038. Epub 2022 
      Apr 21.