Abstract
Hydrothermal pretreatment of soils (Andosols) from Ibaraki prefecture (Japan) was used to improve methods for monitoring radioactive Sr and U. Calcined samples were pretreated with subcritical or supercritical water (SCW) followed by extraction with 0.5 M HNO3 solutions. With SCW pretreatment, recoveries of Sr and U were 70% and 40%, respectively. Experimental recoveries obtained can be described by a linear relationship in water density. The proposed method is robust and can lower environmental burden of routine analytical protocols.
Original language | English |
---|---|
Article number | 109465 |
Journal | Applied Radiation and Isotopes |
Volume | 168 |
DOIs | |
Publication status | Published - 2021 Feb |
Keywords
- Analytical methods
- Hydrothermal pretreatment
- Soil monitoring
- Strontium
- Uranium
ASJC Scopus subject areas
- Radiation