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The data below are the 'raw' extracts from the documents and/or papers. Please refer to the last column for the reference and obtain the full text if required. Please also let me know if there are any mistakes here. |
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Russia
Strontium carbonate production - based on chemical separation of Sr from the mineral apatite. Fertilisers and chalk are also produced from apatite. Sr extraction results in the selective accumulation of radium, which is chemical analogue to Sr. Specific activities (Bq/g): Raw material Apatite: U-nat 0.05, Ra-226 0.03, Ra-228 0.05, Ra-224 0.05, Pa-231 0.02, Ac-227 0.02 Products SrCO3, 1985: U-nat 0.28, Ra-226 2.11, Ra-228 1.4, Ra-224 0.85, Pa-231 0.52, Ac-227 0.85 SrCO3, 1989: U-nat: 0.09, Ra-226 0.74, Ra-228 1.36, Ra-224 0.63, Pa-231 0.37, Ac-227 0.44 SrCO3, low Ba content: U-nat 1.07, Ra-226 0.21, Ra-228 0.48, Ra-224 0.05, Pa-231 n/d, Ac-227 0.11 Chalk: U-nat 0.18, Ra-226 0.04, Ra-228 0.04, Ra-224 0.04, Pa-231 0.02, Ac-227 0.03 Niroammophosphate: U-nat 0.10, Ra-226 0.02, Ra-228 0.01, Ra-224 0.01, Pa-231 0.02, Ac-227 0.02 Sections of packing and depository of SrCO3 - gamma up to 3 microSv/hr. |
S-13
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