PMID- 12580513
OWN - NLM
STAT- MEDLINE
DCOM- 20030728
LR  - 20190720
IS  - 0021-9673 (Print)
IS  - 0021-9673 (Linking)
VI  - 985
IP  - 1-2
DP  - 2003 Jan 24
TI  - 1,3-dialkylimidazolium-based room-temperature ionic liquids as background 
      electrolyte and coating material in aqueous capillary electrophoresis.
PG  - 447-54
AB  - The 1-ethyl-3-methylimidazolium (EMIM) cation was found to have constant mobility 
      of 4.5 x 10(-4) cm2 V(-1) s(-1) over the pH range of 3 to 11. The electroosmotic 
      flow of bare silica capillary was reversed by the covalently bonded 
      room-temperature ionic liquid (RTIL) coating. With run buffer of 5 mM EMIM (pH 
      8.5), NH4+ in human urine was separated from the K+ matrix and was detected to be 
      0.37 +/- 0.012%. K+, Na+, Li+, Ca2+, Mg2+ and Ba2+ were baseline separated in 
      RTIL-coated capillary with run buffer of 10 mM EMIMOH-acetic acid at pH 5, and 
      the concentration of the above ions in a red wine were detected to be 907, 27.9, 
      0, 71.0, 83.4 and 31.1 microg/ml, respectively. The RTIL-coated capillary showed 
      stable electroosmotic flow for at least 80 h in the run buffer.
FAU - Qin, Weidong
AU  - Qin W
AD  - Department of Chemistry, National University of Singapore, Singapore 119260, 
      Singapore.
FAU - Weih, Hongping
AU  - Weih H
FAU - Li, Sam Fong Yau
AU  - Li SF
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 (Electrolytes)
RN  - 0 (Imidazoles)
RN  - 0 (Ions)
RN  - 0 (Metals)
RN  - 0 (Quaternary Ammonium Compounds)
SB  - IM
MH  - Electrolytes/*chemistry
MH  - Electrophoresis, Capillary/*methods
MH  - Humans
MH  - Imidazoles/*chemistry
MH  - Ions
MH  - Metals/analysis
MH  - Quaternary Ammonium Compounds/urine
MH  - Wine/analysis
EDAT- 2003/02/13 04:00
MHDA- 2003/07/29 05:00
CRDT- 2003/02/13 04:00
PHST- 2003/02/13 04:00 [pubmed]
PHST- 2003/07/29 05:00 [medline]
PHST- 2003/02/13 04:00 [entrez]
AID - S0021-9673(02)01844-7 [pii]
AID - 10.1016/s0021-9673(02)01844-7 [doi]
PST - ppublish
SO  - J Chromatogr A. 2003 Jan 24;985(1-2):447-54. doi: 10.1016/s0021-9673(02)01844-7.