Feige, S. and Wiegand, J. (1999) The influence of coal mining on radon potential. Il nuovo cimento C, 22 C (3-4). pp. 345-352. ISSN 1826-9885
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Abstract
Pit waters from hard-coal and brown-coal mining as well as sediments and soils along sewers and rivers in the vicinity of collieries are investigated in the scope of radiation protection. The greatest amount of 226Ra is discharged by hard-coal collieries in the order of several ten Bq l21 at simultaneous occurrence of high mineralised brines. In contact with sulphate-bearing surface water, 226Ra co-precipitates with Ba and is deposited as radiobarite. The contamination with 226Ra leads to high activity concentrations and increased gamma dose rates. The special situation of diadochic incorporation of 226Ra into the dense crystal lattice prevents 222Rn from emanating. However in sediments influenced by brown-coal mining 226Ra is adsorbed at the surfaces of ferric hydroxides and, therefore, 222Rn can easily emanate.
| Item Type: | Article |
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| Additional Information: | Paper presented at the “Fourth International Conference on Rare Gas Geochemistry”, Rome, October 8-10, 1997. |
| Uncontrolled Keywords: | Hydrology and glaciology; radiation detectors; conference proceedings |
| Subjects: | 500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia > 551.9 Geochimica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 10 Oct 2019 07:13 |
| Last Modified: | 10 Oct 2019 07:13 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/13299 |
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