Determination of trace chromium(VI) in drinking water using X-ray fluorescence spectrometry after solid-phase extraction

Analytical and Bioanalytical Chemistry
Pedro R ArandaI E De Vito

Abstract

A new, simple, and selective method for preconcentration and determination of Cr(VI) in aqueous samples. After adsorption in "batch mode" on Aliquat 336-AC, determinations were made directly on the solid by X-ray fluorescence spectrometry, which had the advantage of not requiring the step of elution of the chromium retained. The enrichment factor was calculated considering that the tablets obtained from 10 mL solution of Cr(VI) (1000 μg L(-1)) had a final thickness of 0.64 mm and a diameter of 16.7 mm; the volume deposited on the pellet was 0.14 cm(3). The preconcentration factor obtained was 71-fold, which was highly satisfactory for chromium trace analysis by XRF. Finally, the method was successfully applied to the determination of Cr(VI) in drinking water samples.

References

Jan 1, 1996·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·M TurgutO E Ozcan
Jan 5, 2005·Journal of Hazardous Materials·H H SomedaR R Sheha
May 9, 2008·Journal of Hazardous Materials·Lotfi Monser, Nafaâ Adhoum

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Citations

Feb 7, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Saad S M HassanMohamed A Al-Omar
May 1, 2021·International Journal of Environmental Research and Public Health·Katherine von StackelbergErnesto Sánchez-Triana

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