Department of Environmental Sciences
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Seminar Abstracts
Environmental Sciences Seminar Abstract            

  FOLLOWING THE HISTORY OF MERCURY MOLECULES IN A SAMPLE - THE STABLE ISOTOPE WAY
Kritee
Rutgers University

All forms of mercury (Hg) are recognized to be toxic, especially the methylated forms of mercury. Mercury has widespread natural and anthropogenic sources and it ultimately finds its way into our bodies through our dental amalgam fillings, air we breathe, soils we grow our food in and most importantly the seafood that many of us love!

We have studied multiple production and degradation pathways of various mercury compounds for over 50 years and yet crucial questions about the relative importance of different sources and pathways remain. About ten years ago, to address these unanswered questions, we started studying stable isotopic composition of Hg (i.e., what percentage of a Hg in a given sample is 199-Hg vs. 204-Hg vs. 202-Hg). Please join the speaker to appreciate how Hg stable isotope analysis has come to be a powerful geo-chemical tool, and her latest results showing changes in isotopic composition of mercury during algal and light mediated reduction of Hg.


Last updated: 10/03/2011