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- W1491242712 abstract "A new technique for accurate and precise determination of uranium by alpha-spectrometry has been developed. The proposed methods are based on microwave digestion and electroplating of uranium in soil. The investigated samples were: surface soil and the soil collected at a depth of 40 cm in the residential area. Extraction column chromatography has been used to extract uranium from the interfering matrix and other elements. It has been found that the proposed microwave method significantly shortens analysis time, reduces the volume of acids used, and eliminates large acid vapour emission. Also the electroplating procedure was simple in operation and produced thin, uniform, and leakage-proof layers on a disc used for alpha-spectroscopic analysis. Recovery of uranium was higher after microwave digestion with HNO 3 + HF than with HNO 3 only, however it was lower than the value obtained after HNO 3 digestion on a hot plate. Reproducibility was acceptable and relative standard deviation ranged between 3 and 6%. Precision of both methods was consistent. Acid volume required for microwave procedures was 5 times smaller, as well as the analysis time was 6 times shorter compared to traditional digestion on a hot plate." @default.
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- W1491242712 date "2007-01-01" @default.
- W1491242712 modified "2023-09-28" @default.
- W1491242712 title "Accurate determination of uranium in soils using electroplating and closed-vessels microwave digestion methods" @default.
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