Since industrial revolution ever increasing human activities are constantly modifying the natural metal cycles which are directly impacting our food, water quality and climate. My research includes studying natural biogeochemical cycles of toxic metals in the environment and the perturbation of the natural cycles by anthropogenic processes. Along with concentration study, I combine the isotopic signature of elements to study the sources, pathways and sinks of the contaminants in preindustrial and contemporary environments. The concentration measurements are used to quantify the magnitude of anthropogenic perturbations, and the isotopic composition are useful for source fingerprinting. I primarily use the multi-collector inductively coupled plasma mass spectrometry (MC-ICPMS) to measure the stable isotopic fractionation of metals.
My main research interests are:
- Mercury biogeochemical cycle
- Arsenic biogeochemistry
- Radiometric dating techniques
- Radiogenic and stable isotope geochemistry
- 2001-2006 PhD. in Geochemistry – Department of Geology, Florida State University, Tallahassee, Florida.
- 1998-2000 M.Sc. Geology – University of Calcutta, Calcutta, India.
- 1995-1998 B.Sc. Geology – University of Calcutta, Calcutta, India.
- 2013-present Senior Research Fellow, Earth Observatory of Singapore, Nanyang Technological University.
- 2012 Research Scientist, School of Environmental Sciences, Chemical Engineering, Jadavpur University, Calcutta, West Bengal, India.
- 2011 Research Associate, Department of Earth and Ocean Sciences, University of South Carolina, Columbia, South Carolina, USA.
- 2010 Scientist, Geosciences Division, Physical Research Laboratory, Department of Space, Govt. of India.
- 2007-2009 Post Doctoral Fellow, National High Magnetic Field Laboratory, Tallahassee, Florida, USA.
- 2001-present Member of GSA (Geological Society of America)
- 2003-present Member of AGU (American Geophysical Union)
- 2007-present Member of ACS (American Chemical Society)
- Dynamic Earth Lab – GLY1000L
- Igneous Metamorphic Petrology Lab – GLY3310L
- Summer Field Camp - Taos – New Mexico - GLY4790
- Dynamic Earth Lecture – GLY1000
- Physical Geology Lecture - GLY2010
- PIRA (Promising Investigator Research Award) along with Dr. Michael Bizimis from the University of South Carolina, 2010.
- Teaching and research assistantship at Florida State University from 2001-2006
- Dissertation writing grant from Florida State University 2006
- Nominated for “Outstanding Teaching Assistance Award” by Florida State University- 2005.
- Travel Grant from “Ridge 2000 Distinguished Lecturer Series” to host Prof. Ken Macdonald as colloquium speaker in 2005.
- Travel Grants from COGS (Congress of Graduate Studies) to present at conferences in 2002, 2004, 2005.
- Travel Grant from GSA (Geological Society of America) to attend GSA annual meeting in 2002 and 2005.
- State scholarship from West Bengal Govt., India, 1998-2000 (during MSc).
Estimation of Metal Emissions From Tropical Peatland Burning in Indonesia by Controlled Laboratory Experiments. Journal of Geophysical Research: Atmospheres. (2019).
Sources of atmospheric lead (Pb) in and around an Indian megacity. Atmospheric Environment. 193, 57-65. (2018).
Arsenic accumulation in paddy plants at different phases of pre-monsoon cultivation. Chemosphere. 210, 987-997. (2018).
Mercury isotopes of atmospheric particle bound mercury for source apportionment study in urban Kolkata, India. Elementa: Science of the Anthropocene. 4, (2016).
Anthropogenic platinum group element (Pt, Pd, Rh) concentrations in PM10 and PM2. 5 from Kolkata, India. SpringerPlus. 5, (2016).
Trace Element Composition of PM2.5 and PM10 from Kolkata - A Heavily Polluted Indian Metropolis. Atmospheric Pollution Research. 742-750. (2015).
Mass Independent Fractionation of Mercury Isotopes as Source Tracers in Sediments. Procedia Earth and Planetary Science. 13, 151-157. (2015).
Environmental arsenic contamination and its health effects in a historic gold mining area of the Mangalur greenstone belt of Northeastern Karnataka, India. Journal of Hazardous Materials. 262, 1048-1055. (2013).
Tracing mercury seawater vs. atmospheric inputs in a pristine SE USA salt marsh system: Mercury isotope evidence. Chemical Geology. 336, 50-61. (2013).
Bimodal volcanism as evidence for Paleozoic extensional accretionary tectonism in the southern Appalachians. Geological Society of America Bulletin. 122, 1220-1234. (2010).
A case for in vivo mass-independent fractionation of mercury isotopes in fish. Geochemistry, Geophysics, Geosystems. 10, Q11012. (2009).
Deccan plume, lithosphere rifting, and volcanism in Kutch, India. Earth and Planetary Science Letters. 277, 101-111. (2009).