Determination of technetium-99, thorium-230 and uranium-234 in soils by inductively coupled plasma mass spectrometry using flow injection preconcentration

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机构：
[1] Hollenbach, Mark
[2] Grohs, James
[3] Mamich, Stephen
[4] Kroft, Marilyn
来源：
Hollenbach, Mark | 1600年 / Royal Soc of Chemistry, Letchworth, United Kingdom卷 / 09期
关键词：
Mass spectrometers - Plasmas - Radioisotopes - Sodium compounds - Soils - Specimen preparation - Technetium - Thorium - Trace analysis - Uranium;
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摘要：
In this study, a flow injection (FI) system is used to separate and concentrate radionuclides by solid-phase extraction. Methods are presented for measuring 99Tc, 230Th and 234U in soils. Samples were fused with sodium peroxide for 99Tc or digested with a mixture of hydrofluoric, nitric and perchloric acids for 230Th and 234U. The FI-ICP-MS methods have LODs comparable to radiochemical methods but are faster, less labour intensive and less laboratory waste.
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