Radiolabeling of Micro-/Nanoplastics via In-Diffusion.

Micro- and nanoplastics are emerging pollutants with a concerning persistence in the environment. Research into their environmental impact requires addressing challenges related to sensitively and selectively detecting them in complex ecological media. One solution with great potential for alleviating these issues is using radiolabeling strategies.

Elucidating the Role of Dissolution in CeO Nanoparticle Plant Uptake by Smart Radiolabeling.

The identification of major uptake pathways in plants is an important factor when evaluating the fate of manufactured nanoparticles in the environment and the associated risks. Using different radiolabeling techniques we were able to show a predominantly particulate uptake for CeO nanoparticles in contrast to a possible uptake in the form of ionic cerium.

Effect of glutamic acid on copper sorption onto kaolinite - Batch experiments and surface complexation modeling.

High carbonate content of the European Kupferschiefer ore deposits is a challenge for acid copper leaching (pH ≤ 2). Therefore investigating the mobility behavior of Cu(II) under conditions related to an alternative, neutrophil biohydrometallurgical Cu(II) leaching approach is of interest. As glutamic acid (Glu) might be present as a component in the growth media, we studied its effects on the adsorption of Cu(II) onto kaolinite.

Mobility and transport of copper(II) influenced by the microbial siderophore DFOB: Column experiment and modelling.

Acid Cu leaching from the European Kupferschiefer ore deposits is a challenge e.g. due to its high carbonate content.

Convenient recycling and reuse of bombarded [¹⁸O]H₂O for the production and the application of [¹⁸F]F⁻.

The limited availability and the increasing demands of [(18)O]H2O force the reuse of bombarded [(18)O]H2O for the production of [(18)F]F(-) at least for the purposes of research. Therefore, inorganic and organic contaminants have to be removed from the [(18)O]H2O after bombardment. We present a simple, effective, easy-handling and reliable method of [(18)O]H2O purification including oxidation and distillation.

Production of 85Sr at a 18MeV-cyclotron and purification for geochemical investigations.

The production of (85)Sr by irradiation of a Rb-target at a cyclotron was investigated. The purification of the radionuclide was performed by a Sr-selective resin. (85)Sr was separated in no-carrier-added aqueous solution with a recovery of 98% and a concentration up to 6.

Radioiodination of humic substances via azocoupling with 3-[125I] iodoaniline.

A new method is described for radiolabeling humic substances (HS) with iodine radioisotopes. The method radiolabels the electron-rich aromatic moieties of HS with the 3-[125I]iodobenzenediazonium ion via azocoupling. The method uses four steps: (i) 3-aminobenzenetrimethylstannane is synthesized and isolated by using a silica gel column, (ii) 3-[125I]iodoaniline is synthesized and isolated by HPLC, with radiochemical yields of up to 60%, (iii) 3-[125I]iodobenzenediazonium chloride is synthesized, and the reaction mixture from this step is used in step iv to radioiodinate HS with radiochemical yields of up to 95% (with reference to 3-[125I]iodoaniline).