PMID- 23618150
OWN - NLM
STAT- MEDLINE
DCOM- 20131112
LR  - 20130426
IS  - 1873-3573 (Electronic)
IS  - 0039-9140 (Linking)
VI  - 109
DP  - 2013 May 15
TI  - Fabrication of magnetic microsphere-confined graphene for the preconcentration of 
      some phthalate esters from environmental water and soybean milk samples followed 
      by their determination by HPLC.
PG  - 133-40
LID - S0039-9140(13)00081-7 [pii]
LID - 10.1016/j.talanta.2013.02.008 [doi]
AB  - In this study, a magnetic microsphere-confined graphene (Fe3O4@SiO2-G) was 
      prepared as a novel adsorbent for the preconcentration of some phthalate esters 
      in environmental water and soybean milk samples prior to high performance liquid 
      chromatography analysis. The properties and morphology of the Fe3O4@SiO2-G were 
      characterized by transmission electron microscopy and X-ray diffraction. This 
      novel graphene-based magnetic nanocomposite showed great adsorptive ability 
      toward the analytes. The method, which takes the advantages of both the high 
      adsorption capacity of G and easy phase separation of the magnetic adsorbent from 
      the sample solution, could avoid the time-consuming experimental procedures 
      related to the traditional solid phase extraction. Various experimental 
      parameters that could affect the extraction efficiencies, such as the amount of 
      Fe3O4@SiO2-G, the extraction time, the pH of sample solution and the desorption 
      conditions, were investigated. Under the optimum conditions, the limits of 
      detection (S/N=3) of the method for the compounds were between 0.07 and 0.10 ng 
      mL(-1) in water samples, and between 0.15 and 0.30 ng mL(-1) in soybean milk 
      samples. The relative standard deviations (RSDs) varied from 2.7% to 6.1% (n=5). 
      The recoveries of the method were in the range between 87.2% and 109.0% for 
      environmental water and soybean milk samples. The method is suitable to determine 
      the five phthalate esters (diallyl phthalate, di-n-propyl-phthalate, benzyl butyl 
      phthalate, dicyclohexyl-phthalate and diethyl-hexyl-phthalate) in environmental 
      water and soybean milk samples.
CI  - Copyright (c) 2013 Elsevier B.V. All rights reserved.
FAU - Wang, Weina
AU  - Wang W
AD  - Department of Chemistry, College of Basic Sciences, Agricultural University of 
      Hebei, Baoding, Hebei, China.
FAU - Ma, Ruiyang
AU  - Ma R
FAU - Wu, Qiuhua
AU  - Wu Q
FAU - Wang, Chun
AU  - Wang C
FAU - Wang, Zhi
AU  - Wang Z
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20130208
PL  - Netherlands
TA  - Talanta
JT  - Talanta
JID - 2984816R
RN  - 0 (Esters)
RN  - 0 (Magnetite Nanoparticles)
RN  - 0 (Phthalic Acids)
RN  - 7631-86-9 (Silicon Dioxide)
RN  - 7782-42-5 (Graphite)
SB  - IM
MH  - Chromatography, High Pressure Liquid/instrumentation/*methods
MH  - Esters/analysis
MH  - Fresh Water/*analysis
MH  - Graphite/*chemistry
MH  - Limit of Detection
MH  - Magnetite Nanoparticles/*chemistry
MH  - Microscopy, Electron, Transmission
MH  - Microspheres
MH  - Phthalic Acids/*analysis
MH  - Silicon Dioxide/chemistry
MH  - Soy Milk/*chemistry
MH  - Surface Properties
MH  - X-Ray Diffraction
EDAT- 2013/04/27 06:00
MHDA- 2013/11/13 06:00
CRDT- 2013/04/27 06:00
PHST- 2012/10/28 00:00 [received]
PHST- 2013/01/27 00:00 [revised]
PHST- 2013/02/01 00:00 [accepted]
PHST- 2013/04/27 06:00 [entrez]
PHST- 2013/04/27 06:00 [pubmed]
PHST- 2013/11/13 06:00 [medline]
AID - S0039-9140(13)00081-7 [pii]
AID - 10.1016/j.talanta.2013.02.008 [doi]
PST - ppublish
SO  - Talanta. 2013 May 15;109:133-40. doi: 10.1016/j.talanta.2013.02.008. Epub 2013 
      Feb 8.