Uranium series disequilibrium and high thorium and radium enrichments in Karst formations
Article Abstract:
Continuous chemical weathering of limestone fragments within the soil column was observed to possibly cause significant radioactive disequilibria and high concentrations of 230Th, 226Ra and 222Rn in Karst soils of the Jura Mountains and of the mountains in central Switzerland. During weathering, uranium in calcite is released and travels as stable uranyl carbonate complexes through the soil column. Its decay products hydrolyze, on the other hand, are sorbed to soil particles, and/or form insoluble compounds that become increasingly enriched in the soil as the process continues.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
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Occurrence and behavior of x-ray contrast media in sewage facilities and the aquatic environment
Article Abstract:
Researchers from the Water Research and Water Technology in Germany detected the occurrence of iodinated x-ray contrast media such as diatrizoate, iopamidol, iopromide, and iopremol in sewage facilities and the aquatic environment in the range of 0.23-15 [micro sign]g/L using LC-electrospray.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 2000
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Hospital effluents as a source of gadolinium in the aquatic environment
Article Abstract:
Researchers measured the total annual gadolinium (Gd) emissions of German hospitals which results in an elevated concentration of Gd in German surface waters.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 2000
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