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MOD02 |
On the Production of Radioactive Labeled Nanoparticles using a Cyclotron for Oil Consumption Measurements | |
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Short-living radioisotopes synthesized in a cyclotron are predominantly used in nuclear medicine diagnostics and therapy. Although technical applications are less common, radioactively marked materials are of high relevance in wear and oil consumption measurements at engine test stands. The oil consumption was determined in the exhaust steam by labelling the oil with radioactive substances for several decades. This was carried out by a time consuming process via catalytic exchange or individual labelling of each oil fraction. In contrast, easily accessible nanoparticles conjugated with radioisotopes could highly improve the dispersibility in the oil. In this study, 123I-Iodide with a short half life of 13.5 h is generated by proton irradiation of a xenon target at a cyclotron, before halide exchange of benzyl chloride reveals the technical relevant 123I-benzyl iodide, which is conjugated to gold nanoparticles in the oil. These nanoparticles are successfully synthesized by simple and rapid pulsed laser ablation of a gold foil in different viscous olefins. Overall this approach represents a new method for radionuclide imaging of engine oil in combustion engines.
*Tilbury, Semin. Nucl. Med. 1974, 4 **Korres, Rev. Sci. Instrum. 2010, 81 ***Evans, Int. J Appl. Radiat. Is. 1973, 24 ****Zellbeck, Tribotest 2000, 6 *****Barcikowski, PCCP 2013, 15 |
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Slides MOD02 [3.221 MB] | |
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