PMID- 28477810
OWN - NLM
STAT- MEDLINE
DCOM- 20170605
LR  - 20170605
IS  - 1001-0742 (Print)
IS  - 1001-0742 (Linking)
VI  - 55
DP  - 2017 May
TI  - A nanocomposite consisting of silica-coated magnetite and phenyl-functionalized 
      graphene oxide for extraction of polycyclic aromatic hydrocarbon from aqueous 
      matrices.
PG  - 164-173
LID - S1001-0742(16)30292-3 [pii]
LID - 10.1016/j.jes.2016.02.023 [doi]
AB  - In this study, graphene oxide was covalently immobilized on silica-coated 
      magnetite and then modified with 2-phenylethylamine to give a nanocomposite of 
      type Fe(3)O(4)@SiO(2)@GO-PEA that can be applied to the magnetic solid-phase 
      extraction of polycyclic aromatic hydrocarbons (PAHs) from water samples. The 
      resulting microspheres (Fe(3)O(4)@SiO(2)@GO-PEA) were characterized by Fourier 
      transform-infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), CHNS 
      elemental analysis, and vibrating sample magnetometry (VSM) techniques. The 
      adsorbent possesses the magnetic properties of Fe(3)O(4) nanoparticles that allow 
      them easily to be separated by an external magnetic field. They also have the 
      high specific surface area of graphene oxide which improves adsorption capacity. 
      Desorption conditions, extraction time, amount of adsorbent, salt concentration, 
      and pH were investigated and optimized. Following desorption, the PAHs were 
      quantified by gas chromatography with flame ionization detection (GC-FID). The 
      limits of detection (at an S/N ratio of 3) were achieved from 0.005 to 0.1mug/L 
      with regression coefficients (R(2)) higher than 0.9954. The relative standard 
      deviations (RSDs) were below 5.8% (intraday) and 6.2% (inter-day), respectively. 
      The method was successfully applied to the analysis of PAHs in environmental 
      water samples where it showed recoveries in the range between 71.7% and 106.7% 
      (with RSDs of 1.6% to 8.4%, for n=3). The results indicated that the 
      Fe(3)O(4)@SiO(2)@GO-PEA microspheres had a great promise to extraction of PAHs 
      from different water samples.
CI  - Copyright (c) 2016. Published by Elsevier B.V.
FAU - Mahpishanian, Shokouh
AU  - Mahpishanian S
AD  - Department of Chemistry, Faculty of Science, University of Tehran, Tehran, Iran.
FAU - Sereshti, Hassan
AU  - Sereshti H
AD  - Department of Chemistry, Faculty of Science, University of Tehran, Tehran, Iran. 
      Electronic address: sereshti@khayam.ut.ac.ir.
FAU - Ahmadvand, Mohammad
AU  - Ahmadvand M
AD  - Department of Chemistry, Faculty of Science, University of Tehran, Tehran, Iran.
LA  - eng
PT  - Journal Article
DEP - 20160830
PL  - Netherlands
TA  - J Environ Sci (China)
JT  - Journal of environmental sciences (China)
JID - 100967627
RN  - 0 (Polycyclic Aromatic Hydrocarbons)
RN  - 0 (Water Pollutants, Chemical)
RN  - 7631-86-9 (Silicon Dioxide)
RN  - 7782-42-5 (Graphite)
SB  - IM
MH  - Adsorption
MH  - Chemical Fractionation/*methods
MH  - Environmental Monitoring
MH  - Graphite/*chemistry
MH  - Nanocomposites/*chemistry
MH  - Polycyclic Aromatic Hydrocarbons/analysis/*chemistry
MH  - Silicon Dioxide/chemistry
MH  - Water Pollutants, Chemical/analysis
OTO - NOTNLM
OT  - Gas chromatography
OT  - Graphene oxide
OT  - Magnetic separation
OT  - Nanoadsorbent
OT  - Polycyclic aromatic hydrocarbons
OT  - Water samples analysis
EDAT- 2017/05/10 06:00
MHDA- 2017/06/06 06:00
CRDT- 2017/05/08 06:00
PHST- 2015/12/18 00:00 [received]
PHST- 2016/02/14 00:00 [revised]
PHST- 2016/02/25 00:00 [accepted]
PHST- 2017/05/08 06:00 [entrez]
PHST- 2017/05/10 06:00 [pubmed]
PHST- 2017/06/06 06:00 [medline]
AID - S1001-0742(16)30292-3 [pii]
AID - 10.1016/j.jes.2016.02.023 [doi]
PST - ppublish
SO  - J Environ Sci (China). 2017 May;55:164-173. doi: 10.1016/j.jes.2016.02.023. Epub 
      2016 Aug 30.