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.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Thorium, Enriched Uranium, Isotopes, Radioactivity, Radium, Uranium enrichment, Karst, Karsts, Chemical weathering

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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.

In-Vitro Diagnostic Substance Manufacturing, Diagnostic substances, X-Ray Contrast Media, Contrast media (Chemicals), Diagnostic reagents industry, Water Research and Water Technology

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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.

Hospitals, Gadolinium, Health care industry, Pollution

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