Welcome to the Chappaz research group website! Our main investigation topic is the biogeochemistry of trace elements in the environment. More specifically, we explore the trace metal and metalloid behaviors in lakes and oceans through experimental approach, analysis of diverse natural materials, and transport-reaction modeling. Our aims are to identify the reactions involving trace elements and to determine their speciation in modern and ancient aquatic systems. The implications of our research are extensive and contribute, for example, to a better understanding of how the chemistry of Earth’s oceans has changed through geologic time (paleo-environmental implications), and of how the human activities have drastically impacted the biogeochemical cycling of trace elements in the Great Lakes (modern-environmental implications). We are lucky to work in new research facilities (GEM lab: Geochemistry – Environment – Metal) that were entirely remodeled in 2013 to incorporate a trace metal clean room (ISO 6) allowing us to measure extremely low metal concentrations.
Dr. Meghan Wagner and Dr. Anthony Chappaz were awarded a grant from the Institute for Great Lakes Research to study trace metal geochemistry at the sediment-water interface of Lakes Ontario, Erie and Michigan.
Dr. Chappaz latest article published February 1st in Geochimica Cosmochima Acta entitled “Does pyrite act as an important host for molybdenum in modern and ancient euxinic sediments?” has been downloaded more than 1000 times over the last six weeks. It is currently rank in 11th position among the most downloaded articles.
Congratulations to Jasmine Stefansky for being awarded the 2014 Michigan Environmental Laboratory Association Scholarship. She was selected from among many students from MSU, GVSU and CMU through a very competitive process. In March, she will present her future research project, during the MELA annual award ceremony in Lansing, that will consist in assisting Dr. Meghan Wagner, a postdoctoral researcher, in analyzing sediment cores from Lake Michigan.