PMID- 23261291
OWN - NLM
STAT- MEDLINE
DCOM- 20140121
LR  - 20130705
IS  - 1873-3778 (Electronic)
IS  - 0021-9673 (Linking)
VI  - 1300
DP  - 2013 Jul 26
TI  - Preparation of graphene-coated solid-phase microextraction fiber and its 
      application on organochlorine pesticides determination.
PG  - 187-92
LID - S0021-9673(12)01825-0 [pii]
LID - 10.1016/j.chroma.2012.11.072 [doi]
AB  - The coating material determines the sensitivity and selectivity of solid-phase 
      microextraction (SPME). Graphene is predicted to have remarkable properties, such 
      as high thermal conductivity, superior mechanical properties, excellent 
      electronic transport properties and good extraction ability. In this work we 
      immobilized the graphene onto a stainless steel wire to obtain a novel SPME 
      coating based on sol-gel technique. The new fiber possessed a homogeneous, porous 
      surface and showed excellent thermal and solvent stability. Under the optimized 
      conditions, its extraction efficiencies for seven organochlorine pesticides 
      (OCPs) were higher than those of two commercial fibers (PDMS, 85mum; PDMS/DVB, 
      65mum). Using the self-made sol-gel-graphene SPME fiber, the limits of detections 
      for seven OCPs were found to be ranged from 0.19ngL(-1) (o,p-DDT) to 18.3ngL(-1) 
      (heptachlor). The repeatabilities for each single fiber were evaluated and the 
      relative standard deviations (RSDs) ranged from 4.7% to 10.6%. The 
      reproducibilities of fiber-to-fiber were 2.3-13.6%. The developed method was 
      successfully applied to the determination of OCPs in rainwater. Hexachlorobenzene 
      (62.7ng/L), trans-chlordance (79.6ng/L) and p,p-DDT (9.30ng/L) were detected. The 
      relative recoveries ranged from 77.7% to 120%.
CI  - Copyright (c) 2012 Elsevier B.V. All rights reserved.
FAU - Ke, Yuanyuan
AU  - Ke Y
AD  - State Key Laboratory Breeding Base of Eco-Environments and Bio-Resources of the 
      Three Gorges Reservoir Region/MOE Key Laboratory of Aquatic Product Safety/KLGHEI 
      of Environment and Energy Chemistry, School of Chemistry and Chemical 
      Engineering, Sun Yat-sen University, Guangzhou 510275, China.
FAU - Zhu, Fang
AU  - Zhu F
FAU - Zeng, Feng
AU  - Zeng F
FAU - Luan, Tiangang
AU  - Luan T
FAU - Su, Chengyong
AU  - Su C
FAU - Ouyang, Gangfeng
AU  - Ouyang G
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20121203
PL  - Netherlands
TA  - J Chromatogr A
JT  - Journal of chromatography. A
JID - 9318488
RN  - 0 (Hydrocarbons, Chlorinated)
RN  - 0 (Pesticides)
RN  - 0 (Water Pollutants, Chemical)
RN  - 7782-42-5 (Graphite)
SB  - IM
MH  - Chromatography, Gas/methods
MH  - Graphite/*chemistry
MH  - Hydrocarbons, Chlorinated/*analysis/isolation & purification
MH  - Limit of Detection
MH  - Linear Models
MH  - Pesticides/*analysis/isolation & purification
MH  - Phase Transition
MH  - Reproducibility of Results
MH  - Solid Phase Microextraction/instrumentation/*methods
MH  - Water Pollutants, Chemical/analysis/isolation & purification
OTO - NOTNLM
OT  - Graphene
OT  - Organochlorine pesticides
OT  - Solid-phase microextraction
OT  - Sol-gel
EDAT- 2012/12/25 06:00
MHDA- 2014/01/22 06:00
CRDT- 2012/12/25 06:00
PHST- 2012/09/21 00:00 [received]
PHST- 2012/11/22 00:00 [revised]
PHST- 2012/11/23 00:00 [accepted]
PHST- 2012/12/25 06:00 [entrez]
PHST- 2012/12/25 06:00 [pubmed]
PHST- 2014/01/22 06:00 [medline]
AID - S0021-9673(12)01825-0 [pii]
AID - 10.1016/j.chroma.2012.11.072 [doi]
PST - ppublish
SO  - J Chromatogr A. 2013 Jul 26;1300:187-92. doi: 10.1016/j.chroma.2012.11.072. Epub 
      2012 Dec 3.