Now showing items 1-4 of 4
An atom counter for measuring Kr-81 and Kr-85 in environmental samples
Due to its simple production and transport processes in the terrestrial environment, the long-lived noble-gas isotope Kr-81 is the ideal tracer for old water and ice in the age range of 10(5)-10(6) years, a range beyond ...
Seasonal Variations in Nitrate Flux, Transport, and Sources in the Upper Illinois River Basin
Excess N contributes to numerous environmental issues such as eutrophication, hypoxia, and loss of habitat and biodiversity. This study was conducted to study the sources, inventory, and transport of nitrate in the Upper ...
Global Geochemical Cycle of Perchlorate
The Great Lakes hydrologic system is one of the world’s most valuable natural resources, and over time its value will only rise with increasing fresh water demand of the fast-growing human population. Millions of people ...
Hydrological and Geochemical Characterization of a Restored Wetland in Central Illinois
This research employed multiple isotopic and geochemical tracers to build on previous studies of a restored wetland at Hennepin and Hopper Lake in central Illinois. This study provides new hydrogen and oxygen isotopic ...