Trace metal radionuclides, interaction

In our work we concentrate on the interactions between di- and tri-valent metal radionuclides which enter estuarine and seawater in ionic forms and humic and fulvic acids of different origins. However, as humic substances react with metals, not only in dissolved but also in undissolved states, we report some data on the adsorption of trace metal radionuclides on suspended humic acids. 

The interaction and sorption of metal ions with metal oxide and clay surfaces has occupied the attention of chemists, soil scientists, and geochemists for decades (1-4). Transition metal oxides receiving particular emphasis have included various oxides of manganese and iron (5). Interest in sorption phenomena is promoted by the desire to better understand incorporation of metals into minerals, especially marine deposits ( ), the removal of trace metal pollutants and radionuclides from rivers and streams, via sorption and/or precipitation phenomena (1,6), and the deposition of metals on solid substrates in the preparation of catalysts (7,8). 

There are many examples using these approaches for SPE of trace metals using atomic spectrometry detection (Miro and Hansen, 2013 Ruzicka, 2014), column separations of radionuclides and affinity chromatography (Ruzicka, 2014), the determination of organic molecules in food or clinical samples (Chen and Wang, 2007 Miro et al., 2011 Ruzicka, 2014) and for DNA assays, bioligand interaction assays and cellular studies (Ruzicka, 2014). Over the last few years, BIA has been combined with the LOV platform (Chen and Wang, 2007 Miro and Hansen, 2012 Ruzicka, 2014). 

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