Alessandra Leri teaches courses in organic chemistry, general chemistry, and environmental science. She also leads a freshman seminar on the urban ecosystem and coordinates the program in Urban and Environmental Sustainability. Her research group, composed entirely of MMC undergraduates, conducts experiments in environmental chemistry.
Prof. Leri’s research interests lie in organic geochemistry, particularly the biogeochemical cycles of halogens in terrestrial and marine environments. Her papers have helped overturn the long-established paradigm of halogens as unreactive inorganic elements in the environment. Recently, her research has shown that natural organochlorine production is associated with fungal degradation of plant litter on the forest floor. Her subsequent work has shed light on the seasonal chlorination and dechlorination of soil organic matter. She has also revealed that naturally produced organobromine is ubiquitous in both marine and terrestrial systems, definitively changing the view of bromine in the environment. Prof. Leri has recently turned her attention to organochlorine pollutants, specifically the by-products of disinfection in manufacturing and household processes. With undergraduates at MMC, she investigates the production of organochlorine in fabrics during laundry bleaching and organochlorine in vaginal tampons. She also studies natural bromination mechanisms in seawater and soil using a newly developed synchrotron-based technique. She regularly brings students to the synchrotron facility at Brookhaven National Laboratory on Long Island for experimental “beamtimes.” Her students have presented their results at various undergraduate research symposia in the region, winning presentation awards on many occasions.
Ph.D., Chemistry, Princeton University (NSF Graduate Research Fellow)
B.S., Chemistry, magna cum laude, College of William and Mary
- E. Kamen* and A. Leri (2019). Promoting STEM persistence through an innovative field trip-based first-year experience course. Journal of College Science Teaching, in press.
- A. Leri, M. Dunigan*, R. Wenrich*, and B. Ravel (2019). Particulate organohalogens in edible brown seaweeds. Food Chemistry 272, 126.
- A. Barber, J. Brandes, A. Leri, K. Lalonde, K. Balind, S. Wirick, J. Wang, Y. Gélinas (2017). Preservation of organic matter in marine sediments by inner-sphere interactions with reactive iron. Scientific Reports 7, 366.
- P. Northrup, A. Leri, and R. Tappero (2016). Applications of “tender” energy (1-5 keV) X-ray absorption spectroscopy in life sciences. Protein and Peptide Letters 23, 300.
- A. Leri and B. Ravel (2015). Abiotic bromination of soil organic matter. Environmental Science and Technology 49, 13350.
- A. Leri, L. Mayer, K. Thornton, P. Northrup, M. Dunigan*, K. Ness*, and A. Gellis* (2015). A marine sink for chlorine in natural organic matter. Nature Geoscience 8, 620.
- A. Leri, L. Mayer, K. Thornton, and B. Ravel (2014). Bromination of marine particulate organic matter through oxidative mechanisms. Geochimica et Cosmochimica Acta 142, 53.
- A. Leri and B. Ravel (2014). Sample thickness and quantitative concentration measurements in Br K-edge XANES spectroscopy of organic materials. Journal of Synchrotron Radiation 21, 623.
- A. Leri and L. Anthony* (2013). Formation of organochlorine by-products in bleached laundry. Chemosphere 90, 2041.
* denotes MMC undergraduate co-author
General Chemistry I-II and associated labs
Organic Chemistry I-II and associated labs
Chemistry and the Environment
Energy and Climate Change
Environmental Science (conventional and online)
Environmental Science with an Ethical Perspective
New York City: The Urban Ecosystem (freshman seminar)
Journals: Biogeosciences, Chemosphere, Environmental Science and Technology, Geochimica et Cosmochimica Acta, Science of the Total Environment
Funding Agencies: Czech Science Foundation, Department of Energy-Biological and Environmental Research, National Science Foundation
Synchrotron Facilities: Canadian Light Source, Stanford Synchrotron Radiation Light Source
Recent Service to MMC
- Coordinator, Urban and Environmental Sustainability Program, 2018-present
- Departmental Website Coordinator, 2013-present
- Faculty Representative, Barry M. Goldwater Fellowship, 2012-present
- Member, Academic Standing Committee, 2010-present
- Member, Barry Commoner Lecture Series Committee, 2010-present
- Liaison to the Environmental Consortium of Colleges and Universities, 2015-present
- Committee on Promotion and Tenure, 2016-2018
- Honors Day Committee, 2016-2018
- Coordinator, Environmental Studies Program, 2014-2018
- Faculty Advisor, Science Society, 2008-2011, 2014-2015
- Faculty Advisor, GoGreen Coalition, 2008-2009, 2014-2018