NDLI: Modified analcime loaded with zincon as a useful material for the separation and preconcentration of trace palladium and its determination by third-derivative spectrophotometry

Content Provider	Springer Nature Link
Author	Taher, M. A. Mostafavi, A. Mohammadi Mobarakeh, S. Z.
Copyright Year	2007
Abstract	This work assesses the potential of natural analcime zeolite as a sorbent for the preconcentration of palladium. Palladium is quantitatively retained on modified analcime zeolite loaded with zincon using the column method in the pH range from 2.5 to 3.5 at a flow rate of 1 mL/min. The palladium complex was removed from the column with 5.0 mL of dimethylsulfoxide (DMSO) and determined by third-derivative spectrophotometry. The detection limit is 0.03 μg/mL (signal-to-noise ratio = 3) in the final solution. Since it is possible to retain 0.15 μg of palladium from 600 mL of solution passing through the column, elution with 5.0 mL of DMSO gives a detection limit of 0.25 ng/mL for palladium in the initial aqueous solution. The calibration curve is linear over the range 0.1 to 5.0 μg/mL of palladium(II) in the final solution with a correlation coefficient of 0.9996. Seven replicated determinations of 5.0 μg of palladium in 5.0 mL dimethylsulfoxide gave a mean d $^{3}$ A/dλ$^{3}$ (peak-to-peak signal between λ$_{2}$ = 625 and λ$_{1}$ = 654 nm) of 0.64 with a relative standard deviation of 1.2%. The sensitivity of the method (d $^{3}$ A/dλ$^{3}$) is 0.5843 mL/μg of palladium(II) from the slope of the calibration curve. The interference of a large number of anions and cations has been studied and the optimized conditions developed were utilized for the determination of trace palladium in various synthetic and water samples.
Starting Page	1022
Ending Page	1027
Page Count	6
File Format	PDF
ISSN	10619348
Journal	Journal of Analytical Chemistry
Volume Number	62
Issue Number	11
e-ISSN	16083199
Language	English
Publisher	Nauka/Interperiodica
Publisher Date	2007-01-01
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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