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Erschienen in:
2015 | OriginalPaper | Buchkapitel
Determination of uranium in mineral phosphate fertilizers using a low cost gamma spectroscope
verfasst von : Frank Jacobs, Sascha Riedl, Steven Sesselmann, Ewald Schnug
Erschienen in: Uranium - Past and Future Challenges
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Uranium (U) is a natural but undesired heavy metal in rock phosphates and processed phosphorus fertilizers. Analytical methods employing the direct de-termination of U through α-spectroscopy or ICP mass spectrometry are tedious and expensive, require sophisticated laboratory equipment and skilled staff. This contribution describes an easy to perform test based on a low-cost gamma-ray spectroscopy system. The determination of U was carried out through its only gas-eous decay product Radon (
222
Rn). Seven straight and compound fertilizer samples with different U and K content were measured and the spectra compared to that of the U-containing mineral schrockingerite.