PMID- 20034630
OWN - NLM
STAT- MEDLINE
DCOM- 20100413
LR  - 20191210
IS  - 1873-3778 (Electronic)
IS  - 0021-9673 (Linking)
VI  - 1217
IP  - 8
DP  - 2010 Feb 19
TI  - Determination of the carboxylic acids in acidic and basic process samples by 
      capillary zone electrophoresis.
PG  - 1407-13
LID - 10.1016/j.chroma.2009.12.032 [doi]
AB  - Capillary zone electrophoresis (CZE) with indirect UV detection was used in 
      developing a method for the simultaneous determination of inorganic anions, 
      aliphatic and heterocyclic organic acids in various processed samples. The 
      analytes were determined simultaneously in 10 min using an electrolyte containing 
      20mM 2,3-pyrazine dicarboxylic acid, 65mM tricine, 2mM BaCl(2), 0.5mM 
      cetyltrimethylammonium bromide, and 2M urea at pH 8.06. Linear plots for the 
      analytes were obtained in the concentration range of 2-150 mg L(-1). Relative 
      standard deviations (RSDs) of peak areas during a 3-day analysis period varied 
      from 5.5% for glycolate to 9.5% for oxalate. RSDs of migration times varied 
      between 0.4% and 1.1%. The detection limit (at S/N 3) was 1 mg L(-1) for all the 
      analytes studied. The proposed method was successfully demonstrated for the 
      determination of carboxylic acids in eight oxygen treated samples of commercial 
      softwood and hardwood kraft lignin and two red wine samples of Pinot Noir grapes. 
      In the kraft lignin samples the concentrations of carboxylic acids correspond to 
      the oxidation time. The acid concentrations of wine varied considerable.
CI  - Copyright 2009 Elsevier B.V. All rights reserved.
FAU - Rovio, Stella
AU  - Rovio S
AD  - Technical Research Centre of Finland, VTT, FI-02044 VTT, Finland.
FAU - Kalliola, Anna
AU  - Kalliola A
FAU - Siren, Heli
AU  - Siren H
FAU - Tamminen, Tarja
AU  - Tamminen T
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Validation Study
DEP - 20091216
PL  - Netherlands
TA  - J Chromatogr A
JT  - Journal of chromatography. A
JID - 9318488
RN  - 0 (Carboxylic Acids)
RN  - 9005-53-2 (Lignin)
SB  - IM
MH  - Carboxylic Acids/*analysis
MH  - Electrophoresis, Capillary/instrumentation/*methods
MH  - Lignin/*chemistry
MH  - Limit of Detection
MH  - Spectrophotometry, Ultraviolet/instrumentation
MH  - Wine/*analysis
EDAT- 2009/12/26 06:00
MHDA- 2010/04/14 06:00
CRDT- 2009/12/26 06:00
PHST- 2009/10/27 00:00 [received]
PHST- 2009/12/04 00:00 [revised]
PHST- 2009/12/09 00:00 [accepted]
PHST- 2009/12/26 06:00 [entrez]
PHST- 2009/12/26 06:00 [pubmed]
PHST- 2010/04/14 06:00 [medline]
AID - S0021-9673(09)01819-6 [pii]
AID - 10.1016/j.chroma.2009.12.032 [doi]
PST - ppublish
SO  - J Chromatogr A. 2010 Feb 19;1217(8):1407-13. doi: 10.1016/j.chroma.2009.12.032. 
      Epub 2009 Dec 16.