Most research on selenium isotopes over the last decade has focused on either one of two avenues in biology and low-temperature geochemistry. Environmental and biological studies of modern systems are primarily concerned with monitoring and controlling the mobility of selenium in terrestrial settings. Selenium is an essential micro-nutrient for many organisms, including humans, but it becomes toxic at high concentrations (Zwolak and Zaporowska 2012). Significant efforts are therefore invested into evaluating the toxicity, mobility and bioavailability of selenium in soils, rivers and agricultural products. Geochemical studies of ancient sedimentary rocks, on the other hand, make use of the...

First Page Preview

First page PDF preview
You do not currently have access to this article.