PMID- 18603256
OWN - NLM
STAT- MEDLINE
DCOM- 20081015
LR  - 20181201
IS  - 0021-9673 (Print)
IS  - 0021-9673 (Linking)
VI  - 1202
IP  - 1
DP  - 2008 Aug 15
TI  - Preparation of sol-gel polyethylene glycol-polydimethylsiloxane-poly(vinyl 
      alcohol)-coated sorptive bar for the determination of organic sulfur compounds in 
      water.
PG  - 102-6
LID - 10.1016/j.chroma.2008.06.012 [doi]
AB  - A novel headspace sorptive extraction (HSSE) using a glass bar coated with 
      carbowax (polyethylene glycol)-polydimethylsiloxane-poly(vinyl alcohol) 
      (CW/PDMS/PVA) prepared by sol-gel technology method was proposed for the 
      determination of volatile organic sulfur compounds (VOSs) in water. After the 
      extraction, the sorptive bar was desorbed with 60 microL of ethanol and 30 microL 
      of the extract was analysed by large volume injection (LVI) into a gas 
      chromatography-flame photometric detector (GC-FPD). The parameters affecting the 
      headspace sorptive extraction of VOSs such as extraction and desorption time, 
      extraction temperature, stirring speed, desorption solvent, headspace phase 
      ratio, salt and pH were carefully investigated and the optimized experimental 
      conditions were established. The limits of detection (LODs) for the studied VOSs 
      ranged from 0.04 to 4.8 microg/L with the relative standard deviations (RSDs) 
      ranging from 4.5 to 10.2% (n=6). The reproducibility for the preparation of 
      CW/PDMS/PVA-coated sorptive bar ranged from 3.2 to 9.2% in one batch, and from 
      2.8 to 18.5% in batch-to-batch, and more than 50 extractions can be achieved 
      without apparent loss. The proposed method was compared with 
      polydimethylsiloxane-HSSE and carboxen/PDMS-headspace-solid phase microextraction 
      (CAR/PDMS-HS-SPME) under their optimum conditions, CW/PDMS/PVA-HSSE shows the 
      highest adsorption capacity (larger surface area and more active sites), the 
      highest sensitivity (about 10 times) and the best polarity matching for VOSs.
FAU - Yu, Chunhe
AU  - Yu C
AD  - Department of Chemistry, Wuhan University, Wuhan 430072, Hubei Province, China.
FAU - Li, Xuan
AU  - Li X
FAU - Hu, Bin
AU  - Hu B
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20080617
PL  - Netherlands
TA  - J Chromatogr A
JT  - Journal of chromatography. A
JID - 9318488
RN  - 0 (Dimethylpolysiloxanes)
RN  - 0 (Gels)
RN  - 0 (Organic Chemicals)
RN  - 0 (Sulfur Compounds)
RN  - 059QF0KO0R (Water)
RN  - 3WJQ0SDW1A (Polyethylene Glycols)
RN  - 63148-62-9 (baysilon)
RN  - 9002-89-5 (Polyvinyl Alcohol)
RN  - 9011-14-7 (Polymethyl Methacrylate)
SB  - IM
MH  - Adsorption
MH  - Dimethylpolysiloxanes/*chemistry
MH  - Gels/chemistry
MH  - Microscopy, Electron, Scanning
MH  - Organic Chemicals/*analysis
MH  - Polyethylene Glycols/*chemistry
MH  - Polymethyl Methacrylate/chemistry
MH  - Polyvinyl Alcohol/*chemistry
MH  - Reproducibility of Results
MH  - Solid Phase Microextraction
MH  - Sulfur Compounds/*analysis
MH  - Water/analysis/chemistry
EDAT- 2008/07/08 09:00
MHDA- 2008/10/16 09:00
CRDT- 2008/07/08 09:00
PHST- 2008/03/27 00:00 [received]
PHST- 2008/05/20 00:00 [revised]
PHST- 2008/06/03 00:00 [accepted]
PHST- 2008/07/08 09:00 [pubmed]
PHST- 2008/10/16 09:00 [medline]
PHST- 2008/07/08 09:00 [entrez]
AID - S0021-9673(08)01009-1 [pii]
AID - 10.1016/j.chroma.2008.06.012 [doi]
PST - ppublish
SO  - J Chromatogr A. 2008 Aug 15;1202(1):102-6. doi: 10.1016/j.chroma.2008.06.012. 
      Epub 2008 Jun 17.