PMID- 22265535
OWN - NLM
STAT- MEDLINE
DCOM- 20120604
LR  - 20201209
IS  - 1873-3573 (Electronic)
IS  - 0039-9140 (Linking)
VI  - 88
DP  - 2012 Jan 15
TI  - Cloud point extraction and spectrophotometric determination of mercury species at 
      trace levels in environmental samples.
PG  - 516-23
LID - 10.1016/j.talanta.2011.11.026 [doi]
AB  - A new micelle-mediated separation and preconcentration method was developed for 
      ultra-trace quantities of mercury ions prior to spectrophotometric determination. 
      The method is based on cloud point extraction (CPE) of Hg(II) ions with 
      polyethylene glycol tert-octylphenyl ether (Triton X-114) in the presence of 
      chelating agents such as 1-(2-pyridylazo)-2-naphthol (PAN) and 4-(2-thiazolylazo) 
      resorcinol (TAR). Hg(II) ions react with both PAN and TAR in a surfactant 
      solution yielding a hydrophobic complex at pH 9.0 and 8.0, respectively. The 
      phase separation was accomplished by centrifugation for 5 min at 3500 rpm. The 
      calibration graphs obtained from Hg(II)-PAN and Hg(II)-TAR complexes were linear 
      in the concentration ranges of 10-1000 mug L(-1) and 50-2500 mug L(-1) with 
      detection limits of 1.65 and 14.5 mug L(-1), respectively. The relative standard 
      deviations (RSDs) were 1.85% and 2.35% in determinations of 25 and 250 mug L(-1) 
      Hg(II), respectively. The interference effect of several ions were studied and 
      seen commonly present ions in water samples had no significantly effect on 
      determination of Hg(II). The developed methods were successfully applied to 
      determine mercury concentrations in environmental water samples. The accuracy and 
      validity of the proposed methods were tested by means of five replicate analyses 
      of the certified standard materials such as QC Metal LL3 (VWR, drinking water) 
      and IAEA W-4 (NIST, simulated fresh water).
CI  - Copyright (c) 2011 Elsevier B.V. All rights reserved.
FAU - Ulusoy, Halil Ibrahim
AU  - Ulusoy HI
AD  - University of Cumhuriyet, Faculty of Sciences, Department of Chemistry, TR-58140, 
      Sivas, Turkey. hiulusoy@yahoo.com
FAU - Gurkan, Ramazan
AU  - Gurkan R
FAU - Ulusoy, Songul
AU  - Ulusoy S
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20111112
PL  - Netherlands
TA  - Talanta
JT  - Talanta
JID - 2984816R
RN  - 0 (Azo Compounds)
RN  - 0 (Cations, Divalent)
RN  - 0 (Chelating Agents)
RN  - 0 (Drinking Water)
RN  - 0 (Micelles)
RN  - 0 (Naphthols)
RN  - 0 (Resorcinols)
RN  - 0 (Surface-Active Agents)
RN  - 0 (Water Pollutants, Chemical)
RN  - 095B53Y3XV (1-(2-pyridylazo)-2-naphthol)
RN  - 2246-46-0 (4-(2-thiazolylazo)resorcinol)
RN  - 3WJQ0SDW1A (Polyethylene Glycols)
RN  - 9002-93-1 (Octoxynol)
RN  - 9036-19-5 (Nonidet P-40)
RN  - FXS1BY2PGL (Mercury)
SB  - IM
MH  - Azo Compounds/chemistry
MH  - Calibration
MH  - Cations, Divalent
MH  - Chelating Agents/chemistry
MH  - Chemical Fractionation/*methods
MH  - Drinking Water/*chemistry
MH  - Environmental Monitoring
MH  - Fresh Water/*chemistry
MH  - Limit of Detection
MH  - Mercury/*analysis
MH  - Micelles
MH  - Naphthols/chemistry
MH  - Octoxynol
MH  - Polyethylene Glycols/chemistry
MH  - Reproducibility of Results
MH  - Resorcinols/chemistry
MH  - Spectrophotometry
MH  - Surface-Active Agents/chemistry
MH  - Water Pollutants, Chemical/*analysis
EDAT- 2012/01/24 06:00
MHDA- 2012/06/05 06:00
CRDT- 2012/01/24 06:00
PHST- 2011/08/16 00:00 [received]
PHST- 2011/10/16 00:00 [revised]
PHST- 2011/11/07 00:00 [accepted]
PHST- 2012/01/24 06:00 [entrez]
PHST- 2012/01/24 06:00 [pubmed]
PHST- 2012/06/05 06:00 [medline]
AID - S0039-9140(11)01004-6 [pii]
AID - 10.1016/j.talanta.2011.11.026 [doi]
PST - ppublish
SO  - Talanta. 2012 Jan 15;88:516-23. doi: 10.1016/j.talanta.2011.11.026. Epub 2011 Nov 
      12.