PMID- 12685591
OWN - NLM
STAT- MEDLINE
DCOM- 20031120
LR  - 20190720
IS  - 0021-9673 (Print)
IS  - 0021-9673 (Linking)
VI  - 990
IP  - 1-2
DP  - 2003 Mar 21
TI  - Capillary electrophoretic separation of dicarboxylic acids in atmospheric aerosol 
      particles.
PG  - 133-41
AB  - 2,3-Pyrazinedicarboxylic acid (PZDA), 2,6-pyridinedicarboxylic acid (PDA) and 
      2,3-pyridinedicarboxylic acid (QUIN) solutions were studied as background 
      electrolytes (BGEs) in the capillary electrophoretic analysis of dicarboxylic 
      acids in aerosol particles with indirect UV detection. The BGEs were selected on 
      the basis of similarity in structure with the analytes so that mobilities would 
      be compatible. Optimised pH values for PZDA, PDA and QUIN solutions were 10.6, 
      11.0 and 10.2, respectively. Myristyltrimethylammonium hydroxide and 
      myristyltrimethylammonium bromide were added to reverse the electroosmotic flow 
      in the solutions in the direction of anode to enable fast anion detection. 
      Separation was obtained for nine dicarboxylic acids (C2-C10) differing in the 
      number of CH2 groups in their skeleton. The electrophoretic mobilities were 
      determined to lie in the range 3.0 x 10(-4)-7.0 x 10(-4) cm2 V(-1) s(-1). The 
      relative standard deviations (RSDs) for the absolute migration times of the 
      analytes were mostly less than 0.5% (n=6) in PZDA solution. In PDA solution the 
      within-day and day-to-day RSD values for migration were less than 1% and between 
      2 and 4%, respectively. Peak heights and areas mostly deviated between 1 and 15% 
      in both PZDA and PDA solutions. Detection limits ranged between 1 and 5 mg/l. 
      Methods were applied to the analysis of dicarboxylic acids isolated from aerosol 
      particles.
FAU - Adler, Heidi
AU  - Adler H
AD  - Laboratory of Analytical Chemistry, Department of Chemistry, PO Box 55, FIN-00014 
      University of Helsinki, Helsinki, Finland.
FAU - Siren, Heli
AU  - Siren H
FAU - Kulmala, Markku
AU  - Kulmala M
FAU - Riekkola, Marja-Liisa
AU  - Riekkola ML
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - Netherlands
TA  - J Chromatogr A
JT  - Journal of chromatography. A
JID - 9318488
RN  - 0 (Aerosols)
RN  - 0 (Dicarboxylic Acids)
SB  - IM
MH  - Aerosols/*chemistry
MH  - Atmosphere
MH  - Dicarboxylic Acids/*isolation & purification
MH  - Electrophoresis, Capillary/*methods
MH  - Reproducibility of Results
MH  - Sensitivity and Specificity
EDAT- 2003/04/11 05:00
MHDA- 2003/12/03 05:00
CRDT- 2003/04/11 05:00
PHST- 2003/04/11 05:00 [pubmed]
PHST- 2003/12/03 05:00 [medline]
PHST- 2003/04/11 05:00 [entrez]
AID - S0021-9673(03)00051-7 [pii]
AID - 10.1016/s0021-9673(03)00051-7 [doi]
PST - ppublish
SO  - J Chromatogr A. 2003 Mar 21;990(1-2):133-41. doi: 10.1016/s0021-9673(03)00051-7.