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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Nabavi, Masoume Abbasi Tarighat, Maryam Mohammadizadeh, Mohammad Reza |
| Description | Author Affiliation: Abbasi Tarighat M ( Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iran. Electronic address: matarighat@pgu.ac.ir.); Nabavi M ( Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iran.); Mohammadizadeh MR ( Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iran.) |
| Abstract | A new multi-component analysis method based on zero-crossing point-continuous wavelet transformation (CWT) was developed for simultaneous spectrophotometric determination of Cu(2+) and Pb(2+) ions based on the complex formation with 2-benzyl espiro[isoindoline-1,5 oxasolidine]-2,3,4 trione (BSIIOT). The absorption spectra were evaluated with respect to synthetic ligand concentration, time of complexation and pH. Therefore according the absorbance values, 0.015 mmol L(-1) BSIIOT, 10 min after mixing and pH 8.0 were used as optimum values. The complex formation between BSIIOT ligand and the cations Cu(2+) and Pb(2+) by application of rank annihilation factor analysis (RAFA) were investigated. Daubechies-4 (db4), discrete Meyer (dmey), Morlet (morl) and Symlet-8 (sym8) continuous wavelet transforms for signal treatments were found to be suitable among the wavelet families. The applicability of new synthetic ligand and selected mother wavelets were used for the simultaneous determination of strongly overlapped spectra of species without using any pre-chemical treatment. Therefore, CWT signals together with zero crossing technique were directly applied to the overlapping absorption spectra of Cu(2+) and Pb(2+). The calibration graphs for estimation of Pb(2+) and Cu (2+)were obtained by measuring the CWT amplitudes at zero crossing points for Cu(2+) and Pb(2+) at the wavelet domain, respectively. The proposed method was validated by simultaneous determination of Cu(2+) and Pb(2+) ions in red beans, walnut, rice, tea and soil samples. The obtained results of samples with proposed method have been compared with those predicted by partial least squares (PLS) and flame atomic absorption spectrophotometry (FAAS). |
| ISSN | 13861425 |
| Volume Number | 145 |
| e-ISSN | 18733557 |
| Journal | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2015-06-15 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Copper Analysis Food Lead Oxazolidinones Chemistry Soil Spectrophotometry Methods Spiro Compounds Statistics As Topic Water Factor Analysis, Statistical Hydrogen-ion Concentration Indicators And Reagents Ions Least-squares Analysis Time Factors Water Pollutants, Chemical Wavelet Analysis Journal Article Discipline Spectroscopy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Atomic and Molecular Physics, and Optics Analytical Chemistry Instrumentation |
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