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Fayazi, M., Ghanei-Motlagh, M., Taher, M., Fayazi, R. (2016). Determination of Rhodium(III) Ions by Flame Atomic Absorption Spectrometry after Preconcentration with Modified Magnetic Activated Carbon. Analytical and Bioanalytical Chemistry Research, 3(1), 87-99. doi: 10.22036/abcr.2016.14570
Maryam Fayazi; Masoud Ghanei-Motlagh; Mohammad Ali Taher; Raziyeh Fayazi. "Determination of Rhodium(III) Ions by Flame Atomic Absorption Spectrometry after Preconcentration with Modified Magnetic Activated Carbon". Analytical and Bioanalytical Chemistry Research, 3, 1, 2016, 87-99. doi: 10.22036/abcr.2016.14570
Fayazi, M., Ghanei-Motlagh, M., Taher, M., Fayazi, R. (2016). 'Determination of Rhodium(III) Ions by Flame Atomic Absorption Spectrometry after Preconcentration with Modified Magnetic Activated Carbon', Analytical and Bioanalytical Chemistry Research, 3(1), pp. 87-99. doi: 10.22036/abcr.2016.14570
Fayazi, M., Ghanei-Motlagh, M., Taher, M., Fayazi, R. Determination of Rhodium(III) Ions by Flame Atomic Absorption Spectrometry after Preconcentration with Modified Magnetic Activated Carbon. Analytical and Bioanalytical Chemistry Research, 2016; 3(1): 87-99. doi: 10.22036/abcr.2016.14570

Determination of Rhodium(III) Ions by Flame Atomic Absorption Spectrometry after Preconcentration with Modified Magnetic Activated Carbon

Article 8, Volume 3, Issue 1, Winter and Spring 2016, Page 87-99  XML PDF (551 K)
Document Type: Research Paper
DOI: 10.22036/abcr.2016.14570
Authors
Maryam Fayazi1; Masoud Ghanei-Motlagh 1; Mohammad Ali Taher1; Raziyeh Fayazi2
1Shahid Bahonar University of Kerman
2Islamic Azad University
Abstract
A new method for analysis of trace amount of Rh(III) ions by magnetic activated carbon modified with 2,3,5,6-tetra(2-pyridyl)pyrazine (MAC/TPPZ) as the magnetic sorbent has been proposed. The proposed adsorbent was found to be advantageous over conventional solid phase extraction (SPE) in terms of operational simplicity and low time-consuming. The experimental parameters affecting the extraction/preconcentration and determination of the analyte were systematically examined. In order to investigate the selectivity of this magnetic sorbent, the effect of a variety of ions on preconcentration and recovery of Rh(III) ions were also investigated. Under optimum conditions, the calibration graph was linear for the concentration range of 0.8-650 µg l-1. The limit of detection (LOD, 3Sb/m) and the relative standard deviation (RSD, n = 8, c = 50 µg l-1) were 0.1 µg l-1 and 3.6%, respectively. The maximum sorption capacity of the adsorbent for rhodium was found to be 21.6 mg g-1. The presented procedure was applied to monitoring rhodium in water and synthetic samples.
Keywords
Spectrometry; Magnetic activated carbon; Rhodium; Nanocomposite
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