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Molecules 2018, 23(8), 2076;

Using XRF and ICP-OES in Biosorption Studies

Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372 Wrocław, Poland
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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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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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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