PMID- 25127575
OWN - NLM
STAT- MEDLINE
DCOM- 20150616
LR  - 20220409
IS  - 1873-3573 (Electronic)
IS  - 0039-9140 (Linking)
VI  - 129
DP  - 2014 Nov
TI  - Selective mixed-bed solid phase extraction of atrazine herbicide from 
      environmental water samples using molecularly imprinted polymer.
PG  - 132-8
LID - S0039-9140(14)00418-4 [pii]
LID - 10.1016/j.talanta.2014.05.034 [doi]
AB  - A novel approach for the selective extraction of organic target compounds from 
      water samples has been developed using a mixed-bed solid phase extraction 
      (mixed-bed SPE) technique. The molecularly imprinted polymer (MIP) particles are 
      embedded in a network of silica gel to form a stable uniform porous bed. The 
      capabilities of this method are demonstrated using atrazine as a model compound. 
      In comparison to conventional molecularly imprinted-solid phase extraction 
      (MISPE), the proposed mixed-bed MISPE method in combination with gas 
      chromatography-mass spectrometry (GC-MS) analysis enables more reproducible and 
      efficient extraction performance. After optimization of operational parameters 
      (polymerization conditions, bed matrix ingredients, polymer to silica gel ratio, 
      pH of the sample solution, breakthrough volume plus washing and elution 
      conditions), improved LODs (1.34 microg L(-1) in comparison to 2.25 microg L(-1) obtained 
      using MISPE) and limits of quantification (4.5 microg L(-1) for mixed-bed MISPE and 
      7.5 microg L(-1) for MISPE) were observed for the analysis of atrazine. Furthermore, 
      the relative standard deviations (RSDs) for atrazine at concentrations between 5 
      and 200 microg L(-1) ranged between 1.8% and 6.3% compared to MISPE (3.5-12.1%). 
      Additionally, the column-to-column reproducibility for the mixed-bed MISPE was 
      significantly improved to 16.1%, compared with 53% that was observed for MISPE. 
      Due to the reduced bed-mass sorbent and at optimized conditions, the total amount 
      of organic solvents required for conditioning, washing and elution steps reduced 
      from more than 25 mL for conventional MISPE to less than 2 mL for mixed-bed 
      MISPE. Besides reduced organic solvent consumption, total sample preparation time 
      of the mixed-bed MISPE method relative to the conventional MISPE was reduced from 
      more than 20 min to less than 10 min. The amount of organic solvent required for 
      complete elution diminished from 3 mL (conventional MISPE) to less than 0.4 mL 
      with the mixed-bed technique shows its inherent potential for online operation 
      with an analytical instrument. In order to evaluate the selectivity and matrix 
      effects of the developed mixed-bed MISPE method, it was applied as an extraction 
      technique for atrazine from environmental wastewater and river water samples.
CI  - Copyright (c) 2014 Elsevier B.V. All rights reserved.
FAU - Zarejousheghani, Mashaalah
AU  - Zarejousheghani M
AD  - UFZ-Helmholtz Centre for Environmental Research, Department Monitoring and 
      Exploration Technologies, Permoserstrasse 15, D-04318 Leipzig, Germany. Electronic 
      address: mashaalah.zare@ufz.de.
FAU - Fiedler, Petra
AU  - Fiedler P
AD  - UFZ-Helmholtz Centre for Environmental Research, Department Monitoring and 
      Exploration Technologies, Permoserstrasse 15, D-04318 Leipzig, Germany.
FAU - Moder, Monika
AU  - Moder M
AD  - UFZ-Helmholtz Centre for Environmental Research, Department of Analytical 
      Chemistry, Permoserstrasse 15, D-04318 Leipzig, Germany.
FAU - Borsdorf, Helko
AU  - Borsdorf H
AD  - UFZ-Helmholtz Centre for Environmental Research, Department Monitoring and 
      Exploration Technologies, Permoserstrasse 15, D-04318 Leipzig, Germany.
LA  - eng
PT  - Journal Article
DEP - 20140524
PL  - Netherlands
TA  - Talanta
JT  - Talanta
JID - 2984816R
RN  - 0 (Gels)
RN  - 0 (Herbicides)
RN  - 0 (Organic Chemicals)
RN  - 0 (Polymers)
RN  - 0 (Solvents)
RN  - 0 (Water Pollutants, Chemical)
RN  - 059QF0KO0R (Water)
RN  - 44LJ2U959V (Styrene)
RN  - 7631-86-9 (Silicon Dioxide)
RN  - QJA9M5H4IM (Atrazine)
SB  - IM
MH  - Atrazine/*analysis
MH  - Gas Chromatography-Mass Spectrometry
MH  - Gels/chemistry
MH  - Herbicides/*analysis
MH  - Hydrogen-Ion Concentration
MH  - Molecular Imprinting
MH  - Organic Chemicals/chemistry
MH  - Polymers/*chemistry
MH  - Reproducibility of Results
MH  - Silicon Dioxide/chemistry
MH  - Solid Phase Extraction/*methods
MH  - Solvents/chemistry
MH  - Styrene/chemistry
MH  - Temperature
MH  - Water/chemistry
MH  - Water Pollutants, Chemical/*analysis
OTO - NOTNLM
OT  - Atrazine
OT  - Herbicides
OT  - Mixed-bed
OT  - Molecularly imprinted polymer
OT  - Solid phase extraction
EDAT- 2014/08/17 06:00
MHDA- 2015/06/17 06:00
CRDT- 2014/08/17 06:00
PHST- 2014/03/06 00:00 [received]
PHST- 2014/05/12 00:00 [revised]
PHST- 2014/05/18 00:00 [accepted]
PHST- 2014/08/17 06:00 [entrez]
PHST- 2014/08/17 06:00 [pubmed]
PHST- 2015/06/17 06:00 [medline]
AID - S0039-9140(14)00418-4 [pii]
AID - 10.1016/j.talanta.2014.05.034 [doi]
PST - ppublish
SO  - Talanta. 2014 Nov;129:132-8. doi: 10.1016/j.talanta.2014.05.034. Epub 2014 May 
      24.