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  • Determination of trace amounts of zirconium in real samples after microwave digestion and ternary complex dispersive liquid-liquid microextraction.

Determination of trace amounts of zirconium in real samples after microwave digestion and ternary complex dispersive liquid-liquid microextraction.

Environmental monitoring and assessment (2014-02-04)
Daryoush Afzali, Fariba Fathirad, Sima Ghaseminezhad, Zahra Afzali
ABSTRACT

In this study, a ternary Zr(IV) system with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) and fluoride was chosen on the basis of dispersive liquid-liquid microextraction method. Zirconium was extracted into the fine droplets of dichlorobenzene as extracting solvent. These drops dispersed as a cloud in the aqueous sample with the help of ultrasonic waves, and the procedure was done. Finally, atomic absorption spectrometry was applied for the determination of zirconium. The effects of different factors that influence complex formation and extraction, such as pH, amounts of complexing agents, type and volume of the extracting solvent, as well as sonication and centrifuging time, were optimized. Under optimum conditions, the calibration curve was linear in the range of 150.0-800.0 ng mL(-1) with a limit of detection of 44.0 ng mL(-1). Relative standard deviation was calculated to be 4.1 % (n = 7, c = 400.0 ng mL(-1)). The enrichment factor was 80. The proposed method was successfully used to determine the zirconium in several water, wastewater, and soil samples.

MATERIALS
Product Number
Brand
Product Description

Zirconium, foil, light tested, 100x100mm, thickness 0.05mm, annealed, 99.2%
Zirconium, foil, not light tested, 25x25mm, thickness 0.001mm, 99.2%
Zirconium, foil, 6mm disks, thickness 0.01mm, 99.2%
Zirconium, foil, light tested, 50x50mm, thickness 0.008mm, 99.2%
Zirconium, foil, 50mm disks, thickness 0.016mm, 99.2%
Zirconium, foil, light tested, 25x25mm, thickness 0.005mm, 99.2%
Zirconium, foil, 2m coil, thickness 0.05mm, annealed, 99.2%
Zirconium, foil, light tested, 100x100mm, thickness 0.008mm, 99.2%
Zirconium, foil, not light tested, 50x50mm, thickness 0.003mm, 99.2%
Zirconium, foil, light tested, 50x50mm, thickness 0.075mm, annealed, 99.2%
Zirconium, foil, light tested, 25x25mm, thickness 0.025mm, annealed, 99.2%
Zirconium, foil, not light tested, 25x25mm, thickness 0.0025mm, 99.2%
Zirconium, foil, light tested, 100x100mm, thickness 0.007mm, 99.2%
Zirconium, foil, 6mm disks, thickness 0.25mm, annealed, 99.2%
Zirconium, foil, light tested, 50x50mm, thickness 0.009mm, 99.2%
Zirconium, foil, light tested, 25x25mm, thickness 0.006mm, 99.2%
Zirconium, foil, 2m coil, thickness 0.075mm, annealed, 99.2%
Zirconium, foil, 50mm disks, thickness 0.25mm, annealed, 99.2%
Zirconium, foil, light tested, 25x25mm, thickness 0.01mm, 99.2%
Zirconium, foil, 8mm disks, thickness 0.01mm, 99.2%
Zirconium, foil, light tested, 100x100mm, thickness 0.016mm, 99.2%
Sigma-Aldrich
Zirconium, rod, diam. 6.35 mm, ≥99% trace metals basis
Sigma-Aldrich
Zirconium, foil, thickness 0.1 mm, 99.98% trace metals basis
Sigma-Aldrich
Zirconium, powder, −100 mesh
Sigma-Aldrich
Zirconium, sponge, ≥99% trace metals basis
Zirconium, foil, 25mm disks, thickness 0.5mm, annealed, 99.2%
Zirconium, foil, 25mm disks, thickness 0.125mm, annealed, 99.2%
Zirconium, foil, 4mm disks, thickness 0.0125mm, 99.2%
Zirconium, foil, 4mm disks, thickness 0.125mm, annealed, 99.2%
Zirconium, foil, 6mm disks, thickness 0.009mm, 99.2%