PMID- 20873575
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20120105
LR  - 20190923
IS  - 1000-8713 (Print)
IS  - 1000-8713 (Linking)
VI  - 28
IP  - 6
DP  - 2010 Jun
TI  - [Determination of imidazolium ionic liquid cations by ion-pair chromatography 
      using gradient elution].
PG  - 556-60
AB  - Determination of five imidazolium ionic liquid cations by ion-pair chromatography 
      was carried out using ultraviolet-visible spectrophotometry (UV/VIS) detection. 
      Chromatographic separations were performed on a ZORBAX Eclipse XDB-C18 column 
      with 1-heptanesulfonic acid sodium (adjusted by citric acid to pH 4.0) + 
      acetonitrile as eluent. The effects of ion-pair reagents, acetonitrile 
      concentration and column temperature on retention of the cations were 
      investigated. The retention factor of imidazolium cation on column was increased 
      with the increase of the concentration of 1-heptanesulfonic acid sodium. With the 
      increase of the concentration of acetonitrile, the retention time of imidazolium 
      cation was obviously shortened and the peak shape was improved. Under the optimum 
      conditions, detection limits (S/N = 3) for the cations were 0.05-0.30 mg/L. 
      Relative standard deviations (RSDs) for peak areas were less than 0.1%. The 
      method has been successfully applied to the determination of two ionic liquids by 
      chemically synthesized in laboratory with the recoveries of the cations of 
      98.6%-102.1% after spiking.
FAU - Gao, Wei
AU  - Gao W
AD  - College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 
      150025, China.
FAU - Yu, Hong
AU  - Yu H
FAU - Ma, Yajie
AU  - Ma Y
LA  - chi
PT  - English Abstract
PT  - Journal Article
PL  - China
TA  - Se Pu
JT  - Se pu = Chinese journal of chromatography
JID - 9424804
EDAT- 2010/09/30 06:00
MHDA- 2010/09/30 06:01
CRDT- 2010/09/30 06:00
PHST- 2010/09/30 06:00 [entrez]
PHST- 2010/09/30 06:00 [pubmed]
PHST- 2010/09/30 06:01 [medline]
AID - 10.3724/sp.j.1123.2010.00556 [doi]
PST - ppublish
SO  - Se Pu. 2010 Jun;28(6):556-60. doi: 10.3724/sp.j.1123.2010.00556.