Simultaneous kinetic spectrophotometric determination of Cu(II), Co(II) and Ni(II) using partial least squares (PLS) regression

• Authors: Morteza Bahram , Khalil Farhadi , Abbas Afkhami , Donya Shokatynia , Farzin Arjmand
• Languages of publication: EN

Abstracts

EN

A partial least squares (PLS-1) calibration model based on kinetic-spectrophotometric measurement, for the simultaneous determination of Cu(II), Ni(II) and Co(II) ions is described. The method was based on the difference in the rate of the reaction between Co(II), Ni(II) and Cu(II) ions with 1-(2-pyridylazo)2-naphthol in a pH 5.8 buffer solution and in micellar media at 25°C. The absorption kinetic profiles of the solutions were monitored by measuring the absorbance at 570 nm at 2 s intervals during the time range of 0–10 min after initiation of the reaction. The experimental calibration matrix for the partial least squares (PLS-1) model was designed with 30 samples. The cross-validation method was used for selecting the number of factors. The results showed that simultaneous determination could be performed in the range 0.1-2 μg mL−1 for each cation. The proposed method was successfully applied to the simultaneous determination of Cu(II), Ni(II) and Co(II) ions in water and in synthetic alloy samples. [...]

Keywords

EN

Partial least squares; Simultaneous kinetic determination; Cu(II); Co(II); Ni(II)

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2009
• Volume: 7
• Issue: 3
• Pages: 375-381

Dates

published

1 - 9 - 2009

online

21 - 6 - 2009

Contributors

author

Morteza Bahram

• Department of Chemistry, Faculty of Science, Urmia University, Urmia, 57153-165, Iran

author

Khalil Farhadi

• Department of Chemistry, Faculty of Science, Urmia University, Urmia, 57153-165, Iran

author

Abbas Afkhami

• Faculty of Chemistry, Bu-Ali Sina University, Hamadan, 651740, Iran

author

Donya Shokatynia

• Department of Chemistry, Faculty of Science, Urmia University, Urmia, 57153-165, Iran

author

Farzin Arjmand

• Department of Chemistry, Faculty of Science, Urmia University, Urmia, 57153-165, Iran

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Identifiers

DOI

10.2478/s11532-009-0030-2