PMID- 24984465
OWN - NLM
STAT- MEDLINE
DCOM- 20150901
LR  - 20190923
IS  - 1000-8713 (Print)
IS  - 1000-8713 (Linking)
VI  - 32
IP  - 3
DP  - 2014 Mar
TI  - [Determination of three chlorophenols in red wine by sweeping-micellar 
      electrokinetic chromatography coupled with dispersive liquid-liquid 
      microextraction and reversed phase liquid-liquid microextraction].
PG  - 256-62
AB  - A method of dispersive liquid-liquid microextraction (DLLME) and reversed phase 
      liquid-liquid microextraction (RP-LLME) procedures coupled with sweeping-micellar 
      electrokinetic chromatography (sweeping-MEKC) was established to extract and 
      determine the three chlorophenols (CPs) including pentachlorophenol (PCP), 2, 4, 
      6-trichlorophenol (TCP) and 2,4-dichlorophenol (DCP) in red wine. The influences 
      of the parameters of two extraction steps and the electrophoresis conditions were 
      investigated. The optimum extraction conditions were as follows: for DLLME, 3.5 
      mL red wine sample (pH 3.0, 120 g/L NaCl), 300 microL hexane (extraction 
      solvent), extraction for 3 min, centrifugation for 3 min at 5 000 r/min; for 
      RP-LLME, 25 microL 0.16 mol/L NaOH solution, extraction for 2 min, centrifugation 
      for 2 min at 5 000 r/min. The optimum running buffer (pH 2.3) was an aqueous 
      solution containing 25 mmol/L NaH3PO4, 100 mmol/L sodium dodecyl sulfate (SDS) 
      and 30% (v/v) acetonitrile. The optimum on-line concentration conditions were as 
      follows: sample matrix, 80 mmol/L NaH2PO4; hydrodynamic injection of 20 s at 
      20.67 kPa (3 psi). Under the optimum conditions, the excellent linearity was 
      obtained over the range of 0.5-100 microg/L (r > or = 0.991 0) for PCP and TCP, 
      and 1.5-80 microg/L (r > or = 0.985 1) for DCP. The limits of detection (S/N = 3) 
      were in the range of 0.035-0. 114 microg/L. The average recoveries were in the 
      range of 75.2%-104.7% with the relative standard deviations (RSDs) not more than 
      6.17%. The results indicated that the proposed method may find wide applications 
      for the determination of trace CPs in various sample matrixes and other weak 
      acidic organic contaminants.
FAU - Sun, Jianzhi
AU  - Sun J
FAU - He, Hui
AU  - He H
FAU - Liu, Shuhui
AU  - Liu S
LA  - chi
PT  - Journal Article
PL  - China
TA  - Se Pu
JT  - Se pu = Chinese journal of chromatography
JID - 9424804
RN  - 0 (Chlorophenols)
RN  - 0 (Micelles)
RN  - D9BSU0SE4T (Pentachlorophenol)
RN  - MHS8C5BAUZ (2,4,6-trichlorophenol)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - Chlorophenols/*analysis
MH  - *Chromatography
MH  - *Liquid Phase Microextraction
MH  - Micelles
MH  - Pentachlorophenol/*analysis
MH  - Wine/*analysis
EDAT- 2014/07/06 06:00
MHDA- 2015/09/02 06:00
CRDT- 2014/07/03 06:00
PHST- 2014/07/03 06:00 [entrez]
PHST- 2014/07/06 06:00 [pubmed]
PHST- 2015/09/02 06:00 [medline]
AID - 10.3724/sp.j.1123.2013.11004 [doi]
PST - ppublish
SO  - Se Pu. 2014 Mar;32(3):256-62. doi: 10.3724/sp.j.1123.2013.11004.