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M3 Research Laboratory

Welcome to the USGS M3 Research Laboratory. We specialize in analyses for mercury, other trace metals/elements, and microplastics. We have a multi-disciplinary team of researchers that is dedicated to developing field and analytical methods for the reliable detection of metals and microplastics. For metals, we have expanded capabilities to examine concentrations using optical spectroscopy and mass spectrometry techniques as well as a high-resolution multicollector inductively coupled plasma mass spectrometer to examine isotope ratios. The lab also specializes in low-level concentration and speciation methods for mercury. New capabilities include the enumeration and identification of microplastics using Raman and IR spectroscopy techniques. Check out our capabilities page for more information!

Media
M3 Research Laboratory Mercury Metals Microplastics logo

News

Exploring how gold mining impacts mercury releases in Western Ghana

Exploring how gold mining impacts mercury releases in Western Ghana

Dragonflies Reveal Surprising Insights into Mercury Pollution

Dragonflies Reveal Surprising Insights into Mercury Pollution

New publications from the Mercury Research Laboratory and a feature on student trainee Grace Armstrong

New publications from the Mercury Research Laboratory and a feature on student trainee Grace Armstrong

Publications

Preparation and analysis methods for fish tissue collected from Lake Koocanusa, Montana Preparation and analysis methods for fish tissue collected from Lake Koocanusa, Montana

Lake Koocanusa, a reservoir, receives mine wastes from metallurgical coal mines in the Elk River Valley of British Columbia, Canada. Selenium and other elements discharged by the mines into the waters of the United States can pose unknown risks to aquatic life. The U.S. Geological Survey Wyoming-Montana Water Science Center can collaborate with Montana Fish, Wildlife and Parks and other...
Authors
Travis S. Schmidt, Ashley Bussell, Molly A. Moloney, James L. Dunnigan, Trevor M. Selch, Jessica Brandt, Craig Stricker, A. Stewart, Veronika A. Kocen, Danielle Cleveland, Vicki S. Blazer, Sarah E. Janssen, Jacob Ogorek, Meghan Dunn, Theresa L. McBride, Katie B. Adams, Benjamin P. Colman, Matt Young, Jennie Christensen

Application of mercury stable isotopes to examine sources and hydrologic factors impacting mercury bioaccumulation and cycling in invertebrates of a model saline lake Application of mercury stable isotopes to examine sources and hydrologic factors impacting mercury bioaccumulation and cycling in invertebrates of a model saline lake

Invertebrates, such as brine shrimp and brine flies, are key prey items for millions of resident and migratory birds that utilize saline lakes such as Great Salt Lake (GSL). Elevated methylmercury (MeHg) in invertebrate and waterfowl species of GSL has been assumed to be linked to elevated MeHg in GSL’s anoxic Deep Brine Layer (DBL) where aqueous concentrations can exceed 30 ng/L. Here...
Authors
Samuel Lopez, Sarah E. Janssen, Michael T. Tate, Frank J. Black, Hannah Mcilwain, Laura Flucke, Jacob Ogorek, William Johnson

Ecological factors decouple Great Lakes fish mercury concentrations trends decadal declines in mercury emissions Ecological factors decouple Great Lakes fish mercury concentrations trends decadal declines in mercury emissions

Atmospheric mercury (Hg) deposition has been declining in North America but remains the dominant delivery mechanism to the Great Lakes. The Lakes are highly efficient at bioaccumulating methylmercury, making the fish excellent sentinels for tracking shifts in atmospheric Hg deposition. Invasive mussels have altered biogeochemical processes, prey populations and fish dietary strategies...
Authors
Ryan F. Lepak, Joel Hoffman, Sarah E. Janssen, Michael T. Tate, Morgann B Gordon, Michael Mahon, Samantha Rumschlag, Christopher Yarnes, Brian A. Lennel, David Krabbenhoft, Jacob Ogorek, James P. Hurley
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