PMID- 20869503
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20110112
LR  - 20220409
IS  - 1873-4324 (Electronic)
IS  - 0003-2670 (Linking)
VI  - 678
IP  - 1
DP  - 2010 Sep 23
TI  - Preparation and evaluation of graphene-coated solid-phase microextraction fiber.
PG  - 44-9
LID - 10.1016/j.aca.2010.08.008 [doi]
AB  - In this paper, a novel graphene (G) based solid-phase microextraction (SPME) 
      fiber was firstly prepared by immobilizing the synthesized G on stainless steel 
      wire as coating. The new fiber possessed a homogeneous, porous and wrinkled 
      surface and showed excellent thermal (over 330 degrees C), chemical and mechanical 
      stability, and long lifespan (over 250 extractions). The SPME performance of the 
      G-coated fiber was evaluated in detail through extraction of six pyrethroid 
      pesticides. Although the thickness of G-coated fiber was only 6-8 mum, its 
      extraction efficiencies were higher than those of two commercial fibers (PDMS, 
      100 mum; PDMS/DVB, 65 mum). This high extraction efficiency may be mainly 
      attributed to huge delocalized pi-electron system of G, which shows strong 
      pi-stacking interaction with pyrethroid pesticide. The G-coated fiber was applied 
      in the gas chromatographic determination of six pyrethroids, and their limits of 
      detection were found to be ranged from 3.69 to 69.4 ng L(-1). The reproducibility 
      for each single fiber was evaluated and the relative standard deviations (RSDs) 
      were calculated to be in the range from 1.9% to 6.5%. The repeatability of 
      fiber-to-fiber and batch-to-batch was 4.3-9.2% and 4.1-9.9%. The method developed 
      was successfully applied to three pond water samples, and the recoveries were 
      83-110% at a spiking of 1 mug L(-1).
CI  - Copyright (c) 2010 Elsevier B.V. All rights reserved.
FAU - Chen, Jinmei
AU  - Chen J
AD  - Department of Chemistry and the Key Laboratory of Analytical Sciences of the 
      Ministry of Education, College of Chemistry and Chemical Engineering, Xiamen 
      University, Xiamen 361005, China.
FAU - Zou, Jing
AU  - Zou J
FAU - Zeng, Jingbin
AU  - Zeng J
FAU - Song, Xinhong
AU  - Song X
FAU - Ji, Jiaojiao
AU  - Ji J
FAU - Wang, Yiru
AU  - Wang Y
FAU - Ha, Jaeho
AU  - Ha J
FAU - Chen, Xi
AU  - Chen X
LA  - eng
PT  - Journal Article
DEP - 20100814
PL  - Netherlands
TA  - Anal Chim Acta
JT  - Analytica chimica acta
JID - 0370534
EDAT- 2010/09/28 06:00
MHDA- 2010/09/28 06:01
CRDT- 2010/09/28 06:00
PHST- 2010/05/31 00:00 [received]
PHST- 2010/07/30 00:00 [revised]
PHST- 2010/08/09 00:00 [accepted]
PHST- 2010/09/28 06:00 [entrez]
PHST- 2010/09/28 06:00 [pubmed]
PHST- 2010/09/28 06:01 [medline]
AID - S0003-2670(10)00982-7 [pii]
AID - 10.1016/j.aca.2010.08.008 [doi]
PST - ppublish
SO  - Anal Chim Acta. 2010 Sep 23;678(1):44-9. doi: 10.1016/j.aca.2010.08.008. Epub 
      2010 Aug 14.