PMID- 18358859
OWN - NLM
STAT- MEDLINE
DCOM- 20080415
LR  - 20131121
IS  - 1873-4324 (Electronic)
IS  - 0003-2670 (Linking)
VI  - 612
IP  - 2
DP  - 2008 Apr 7
TI  - On-line metals preconcentration and simultaneous determination using cloud point 
      extraction and inductively coupled plasma optical emission spectrometry in water 
      samples.
PG  - 144-51
LID - 10.1016/j.aca.2008.02.034 [doi]
AB  - A new on-line cloud point extraction (CPE) system coupled to ICP-OES was designed 
      for simultaneous extraction, preconcentration and determination of Cd2+, Co2+, 
      Cr3+, Cu2+, Fe3+ and Mn2+ ions in water samples. This is based on the 
      complexation of the metal ions with 1-(2-thenoyl)-3,3,3-trifluoraceton reagent 
      (TTA) at pH 6.0 in the presence of non-ionic surfactant of Triton X-114. The 
      micellar solution was heated above 60 degrees C and loaded through a column 
      packed with cotton, which acts as a filter for retaining the analyte-entrapped 
      surfactant-rich phase. Then the surfactant-rich phase was eluted using 
      propanol:0.5 mol L(-1) nitric acid solution (75:25, v/v) at a flow rate of 3.0 mL 
      min(-1) and directly introduced into the nebulizer of the ICP-OES. Several 
      factors influencing the instrumental conditions and extraction were evaluated and 
      optimized. Under the optimum conditions, the enhancement factors of the proposed 
      method for target ions were between 42 and 97, the detection limits (DLs) were in 
      the range of 0.1-2.2 microgL(-1). The relative standard deviations (R.S.D.s) at 
      100 microgL(-1) concentration levels of each ion were found to be less than 4.6%. 
      Also, the calibration graphs were linear in the range of 0.5-100 microgL(-1) with 
      the correlation coefficients within the range of 0.9948-0.9994. Finally, the 
      developed method was successfully applied to the extraction and determination of 
      the mentioned metal ions in the tap, well, sea and mineral water samples and 
      satisfactory results were obtained.
FAU - Yamini, Yadollah
AU  - Yamini Y
AD  - Department of Chemistry, Tarbiat Modares University, PO Box 14115-175, Tehran, 
      Iran. yyamini@modares.ac.ir
FAU - Faraji, Mohammad
AU  - Faraji M
FAU - Shariati, Shahab
AU  - Shariati S
FAU - Hassani, Rahim
AU  - Hassani R
FAU - Ghambarian, Mahnaz
AU  - Ghambarian M
LA  - eng
PT  - Journal Article
DEP - 20080223
PL  - Netherlands
TA  - Anal Chim Acta
JT  - Analytica chimica acta
JID - 0370534
RN  - 0 (Metals)
RN  - 059QF0KO0R (Water)
SB  - IM
MH  - Hydrogen-Ion Concentration
MH  - Metals/*analysis
MH  - Online Systems/*instrumentation
MH  - Spectrum Analysis/*instrumentation/*methods
MH  - Temperature
MH  - Time Factors
MH  - Water/*chemistry
EDAT- 2008/03/25 09:00
MHDA- 2008/04/16 09:00
CRDT- 2008/03/25 09:00
PHST- 2007/10/17 00:00 [received]
PHST- 2008/02/14 00:00 [revised]
PHST- 2008/02/14 00:00 [accepted]
PHST- 2008/03/25 09:00 [pubmed]
PHST- 2008/04/16 09:00 [medline]
PHST- 2008/03/25 09:00 [entrez]
AID - S0003-2670(08)00348-6 [pii]
AID - 10.1016/j.aca.2008.02.034 [doi]
PST - ppublish
SO  - Anal Chim Acta. 2008 Apr 7;612(2):144-51. doi: 10.1016/j.aca.2008.02.034. Epub 
      2008 Feb 23.