PMID- 18374702
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20080430
LR  - 20080331
IS  - 1873-4324 (Electronic)
IS  - 0003-2670 (Linking)
VI  - 613
IP  - 1
DP  - 2008 Apr 14
TI  - Cold-induced aggregation microextraction: a novel sample preparation technique 
      based on ionic liquids.
PG  - 56-63
LID - 10.1016/j.aca.2008.02.057 [doi]
AB  - In this research, a novel microextraction technique based on ionic liquids (ILs) 
      termed cold-induced aggregation microextraction (CIAME) is developed. In this 
      method, very small amounts of 1-hexyl-3-methylimidazolium hexafluorophosphate 
      [Hmim][PF(6)] and 1-hexyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide 
      [Hmim][Tf(2)N] (as extractant solvents) were dissolved in a sample solution 
      containing Triton X-114 (as an anti-sticking agent). Afterwards, the solution was 
      cooled in the ice bath and a cloudy solution was formed. After centrifuging, the 
      fine droplets of extractant phase were settled to the bottom of the 
      conical-bottom glass centrifuge tube. CIAME is a simple and rapid method for 
      extraction and preconcentration of metal ions from water samples and can be 
      applied for the sample solutions containing high concentration of salt and water 
      miscible organic solvents. Furthermore, this technique is much safer in 
      comparison with the organic solvent extraction. Performance of the technique was 
      evaluated by determination of the trace amounts of mercury as a test analyte in 
      several real water samples. Michler thioketone (TMK) was chosen as a complexing 
      agent. Analysis was carried out using spectrophotometric detection method. Type 
      and amount of IL and the surfactant, temperature and the other parameters were 
      optimized. Under the optimum conditions, the limit of detection (LOD) of the 
      method was 0.3 ng mL(-1) and the relative standard deviation (R.S.D.) was 1.32% 
      for 30 ng mL(-1) mercury.
FAU - Baghdadi, Majid
AU  - Baghdadi M
AD  - Department of Analytical Chemistry, Faculty of Chemistry, University College of 
      Science, The University of Tehran, P.O. Box 14155-6455, Tehran, Iran.
FAU - Shemirani, Farzaneh
AU  - Shemirani F
LA  - eng
PT  - Journal Article
DEP - 20080305
PL  - Netherlands
TA  - Anal Chim Acta
JT  - Analytica chimica acta
JID - 0370534
EDAT- 2008/04/01 09:00
MHDA- 2008/04/01 09:01
CRDT- 2008/04/01 09:00
PHST- 2007/11/18 00:00 [received]
PHST- 2008/02/17 00:00 [revised]
PHST- 2008/02/22 00:00 [accepted]
PHST- 2008/04/01 09:00 [pubmed]
PHST- 2008/04/01 09:01 [medline]
PHST- 2008/04/01 09:00 [entrez]
AID - S0003-2670(08)00384-X [pii]
AID - 10.1016/j.aca.2008.02.057 [doi]
PST - ppublish
SO  - Anal Chim Acta. 2008 Apr 14;613(1):56-63. doi: 10.1016/j.aca.2008.02.057. Epub 
      2008 Mar 5.