PMID- 19382583
OWN - NLM
STAT- MEDLINE
DCOM- 20090623
LR  - 20190729
IS  - 1060-3271 (Print)
IS  - 1060-3271 (Linking)
VI  - 92
IP  - 1
DP  - 2009 Jan-Feb
TI  - Utilization of picolinaldehyde-4-phenyl-3-thiosemicarbazone in sodium 
      dodecylsulfate micelles for the spectrophotometric determination of iron, 
      vanadium, and cobalt following partial least-squares regression analysis.
PG  - 248-56
AB  - Partial least-squares regression was applied for the simultaneous determination 
      of iron, vanadium, and cobalt after complexation with 
      picolinaldehyde-4-phenyl-3-thiosemicarbazone (PAPT) in the presence of anionic 
      sodium dodecylsulfate (SDS) micelles. These 3 complexed metal ions exhibited 
      overlapping spectra in the 390-510 nm region with a maximum absorbance at 415 nm 
      at pH 3.0 and enhanced absorbance in the presence of SDS. The data for the 
      simultaneous determination of these metal ions were analyzed using a simple 
      partial least-squares (SIMPLS) algorithm. Formation constants (log Kf) were found 
      to be 4.65, 3.29, and 4.85 for PAPT complexes of Fe, V, and Co, respectively, and 
      the detection limits for Fe, V, and Co were 0.013, 0.002, and 0.010 microg/mL, 
      respectively. Common anions and cations did not interfere with the proposed 
      method. The method was validated by calculating root mean square error of 
      cross-validation, root mean square error of calibration, and root mean square 
      error of prediction and was applied to determine these 3 metal ions in real crude 
      oil samples.
FAU - Balouch, Aamna
AU  - Balouch A
AD  - University of Sindh, Centre of Excellence in Analytical Chemistry, Jamshoro, 
      Pakistan. aamna_balouch@yahoo.com
FAU - Memon, Najma
AU  - Memon N
FAU - Bhanger, Muhammad I
AU  - Bhanger MI
FAU - Khuhawar, Muhammad Y
AU  - Khuhawar MY
LA  - eng
PT  - Journal Article
PL  - England
TA  - J AOAC Int
JT  - Journal of AOAC International
JID - 9215446
RN  - 0 (Anions)
RN  - 0 (Cations)
RN  - 0 (Indicators and Reagents)
RN  - 0 (Micelles)
RN  - 0 (Phenols)
RN  - 0 (Pyridines)
RN  - 0 (Semicarbazides)
RN  - 0 (picolinaldehyde)
RN  - 00J9J9XKDE (Vanadium)
RN  - 3G0H8C9362 (Cobalt)
RN  - 6056O8W6ET (thiosemicarbazide)
RN  - E1UOL152H7 (Iron)
SB  - IM
MH  - Anions
MH  - Cations
MH  - Cobalt/*analysis
MH  - Indicators and Reagents
MH  - Iron/*analysis
MH  - Least-Squares Analysis
MH  - Micelles
MH  - Phenols
MH  - Pyridines
MH  - Regression Analysis
MH  - Reproducibility of Results
MH  - Semicarbazides
MH  - Sensitivity and Specificity
MH  - Spectrophotometry/methods
MH  - Vanadium/*analysis
EDAT- 2009/04/23 09:00
MHDA- 2009/06/24 09:00
CRDT- 2009/04/23 09:00
PHST- 2009/04/23 09:00 [entrez]
PHST- 2009/04/23 09:00 [pubmed]
PHST- 2009/06/24 09:00 [medline]
PST - ppublish
SO  - J AOAC Int. 2009 Jan-Feb;92(1):248-56.