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Molecules 2018, 23(8), 2076; https://doi.org/10.3390/molecules23082076

Using XRF and ICP-OES in Biosorption Studies

1
Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372 Wrocław, Poland
2
Department of Dentofacial Orthopeadics and Orthodontics, Division of Facial Abnormalities, Medical University of Wrocław, ul. Krakowska 25, 50-425Wrocław, Poland
*
Author to whom correspondence should be addressed.
Received: 16 July 2018 / Revised: 13 August 2018 / Accepted: 13 August 2018 / Published: 19 August 2018
(This article belongs to the Section Analytical Chemistry)
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Abstract

In this work, a method of recalculation of results of X-ray fluorescence (XRF) technique to Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES) method was elaborated for biosorption studies. Equations that calibrate XRF to ICP-OES were determined, as a biosorbent strawberry, blackcurrant and raspberry seeds after supercritical CO2 extraction were used. ICP-OES showed a better precision and lower detection limits than XRF. The latter technique is cheaper, requires minimal sample preparation and gives faster results. Linear regression of the data gave almost 1:1 correlations without additional correction (for Cu r2 = 0.9998, Mn r2 = 0.807, Zn r2 = 0.979). Calibration and quantification of intensities of XRF was obtained using ICP-OES measurements after samples digestion with HNO3 in a microwave system. High positive correlations were estimated for Cu, Mn, Zn. It was demonstrated that XRF technique can be used together with other well established techniques (ICP-OES) to produce quantitative data from biosorption studies. Elaboration of cheap and quick analytical methodology is an important aspect in development of new processes and products based on biosorption process. View Full-Text
Keywords: multielemental analysis; ICP-OES; XRF; biomass; biosorption; surface concentration multielemental analysis; ICP-OES; XRF; biomass; biosorption; surface concentration
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Chojnacka, K.; Samoraj, M.; Tuhy, Ł.; Michalak, I.; Mironiuk, M.; Mikulewicz, M. Using XRF and ICP-OES in Biosorption Studies. Molecules 2018, 23, 2076.

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