Environmental Geochemistry Group

We investigate the mobilization and transport of inorganic and organic contaminants in natural and anthropogenically polluted soil and aquatic environments. The goal is to develop the mechanistic geochemical understanding for the contaminant mobilization and transport for better tackling of current and future challenges of contamination of the soil and water resources and related ecosystems. Our research combines field and laboratory investigations to computer simulation (geochemical, litho-stratigraphic, and statistical modellings). Aqueous and solid phase speciation (redox and molecular) of trace elements by ion chromatography (IC) hyphenated with inductively coupled plasma mass spectrometer (ICP-MS) and synchrotron based X-ray absorption spectroscopy (XAS: XANES & EXAFS), respectively, are the key components in our research programme.

Group Leader: Dr. Ashis Biswas

Assistant Professor
Department of Earth and Environmental Sciences (EES)
Indian Institute of Science Education and Research (IISER) Bhopal
Academic Building - II, Room No. 30
Bhopal Bypass Road, Bhauri
Bhopal - 462 066, Madhya Pradesh, INDIA
Tel: +91-755-669-1389
Email: ashis@iiserb.ac.in

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Academic Career

Assistant Professor (Since July 2017): Indian Institute of Science Education and Research (IISER) Bhopal, India
Post Doctoral Fellow (2015-2017): University of Bayreuth, Germany
Post Doctoral Fellow (2014-2015): University of Saskatchewan, Canada
Research Fellow (2008-2010): University of Kalyani, India

Education

PhD (2013): KTH Royal Institute of Technology, Sweden
MSc (2007): University of Kalyani, India
BSc (2005): University of Kalyani, India

Award

1. Humboldt Postdoctoral Scholarship, awarded by Alexander von Humboldt (AvH) Foundation, Germany.
2. Erasmus Mundus Doctoral Scholarship, awarded by European Commission's Erasmus Mundus External Cooperation Window (EMECW- Lot 13) - EURINDIA.

Research Interest

(a) Applied Geochemical Research

i) Geochemistry of the groundwater contamination and development of mitigation measure

In India, groundwater is the major source of water for household (drinking, cooking and washing), agriculture, and industrial uses. The availability of groundwater of good quality is directly related to the wellbeing of the Indian society. However, the deterioration of groundwater quality by contamination with different inorganic and organic contaminants (e.g. arsenic, chromium, fluoride, nitrate, pesticides, selenium, uranium, etc.) possesses a serious threat to the availability of potable groundwater in different parts of India. A detail understanding of different hydrogeochemical processes that regulate the mobilization, transport and distribution of these contaminants in groundwater is often limited. Lack of such understanding limits the prioritization of mitigation measures. Our research focuses on developing a detailed understanding of the water-sediment interactions and hydrogeochemical processes that control mobilization, transport and distribution of contaminants in different aquifers in the affected areas, devising mitigation measure for safe drinking and irrigation water supply, and developing strategy for sustainable exploitation of the safe aquifer.

ii) Geochemistry of the mine waste rock

Mining of metal and metallic ores and fossil fuels produces large volume of mine waste. Depending on the mineralogy, weathering of mine waste can have negative impacts on the soil and surface water and groundwater quality in areas surrounding the mine operation site. Therefore, sustainable mining operation requires effective placement of mine waste and post-mining rehabilitation of the mine operation site. Proper placement of mine waste and designing of specific rehabilitation programme varies from site to site. Detailed mineralogical characterization of mine waste and understanding of the geochemical processes that regulate contaminant mobilization and transport in waste rock dump and tailings impoundment are pre-requisite for designing of mine waste placement facility and rehabilitation programme. With this outlook we investigate the geochemistry of mine waste rock in different active and abandoned mine operation sites in India, so that the impact of mining activities on soil and surface water and groundwater can be minimized.

(b) Basic Geochemical Research

Our basic geochemical research programme follows the applied research programme. The theme is to conduct laboratory processes based experiment under controlled simulated field conditions, to improve the basic geochemical understanding for complementing the field observation, recorded in the two applied research programmes. One potential research area is the characterization of geochemical processes at the liquid-solid interface, e.g. surface complexation, adsorption, ion exchange, etc.

Opportunity

We welcome young and energetic people with high ambition for science, to pursue postdoc, PhD, and internship in our group. Motivated candidates with interest in any aspect of Environmental Geochemistry (not limited to only our current topics) are encouraged to contact Dr. Ashis Biswas (ashis@iiserb.ac.in) at any time over the year, with a cover letter, research interest, curriculum vitae, and details of two referees (in one pdf file).

Research Publications

I. Journal Article

2017

1. Essilfie - Dughan J., Hendry M. J., Dynes J. J., Hu Y., Biswas A., Barbour S. L. (2017) Distribution and evolution of sulfur and iron phases in coal waste rock, Elk Valley, British Columbia, Canada, Science of the Total Environment, 579, 396-408.

2. Biswas A., Hendry M. J., Essilfie - Dughan J. (2017) Geochemistry of arsenic in low sulfide - high carbonate coal waste rock, Elk Valley, British Columbia, Canada. Science of the Total Environment, 579, 396-408.

2015

3. Hendry M. J., Biswas A., Essilfie - Dughan J., Chen N., Day S. J., Barbour, S. L. (2015) Reservoirs of Selenium in Coal Waste Rock: Elk Valley, British Columbia, Canada. Environmental Science & Technology, 49, 8228-8236.

2014

4. Biswas A., Neidhardt H., Kundu A. K., Halder D., Chatterjee D., Berner Z., Jacks G., Bhattacharya P. (2014) Spatial, vertical and temporal variation of arsenic in shallow aquifers of the Bengal Basin: Controlling geochemical processes. Chemical Geology, 387, 157-169.

5. Halder D., Biswas A., Slejkovec Z., Chatterjee D., Nriagu J., Jacks G., Bhattacharya P. (2014) Arsenic Species in Raw and Cooked Rice: Implications for Human Health in Rural Bengal. Science of the Total Environment, 497-498, 200-208.

6. Biswas A., Bhattacharya P., Mukherjee A., Nath B., Alexanderson H., Kundu A. K., Chatterjee D., Jacks G. (2014) Shallow hydrostratigraphy in an arsenic affected region of Bengal Basin: Implication for targeting safe aquifers for drinking water supply. Science of the Total Environment, 485-486, 12-22.

7. Biswas A., Gustafsson J. P., Neidhardt H., Halder D., Kundu A. K., Chatterjee D., Berner Z., Bhattacharya P. (2014) Role of competing ions in the mobilization of arsenic in groundwater of Bengal Basin: Insight from surface complexation modeling. Water Research, 55, 30-39.

8. Neidhardt H., Berner Z. A., Freikowski D., Biswas A., Majumder S., Winter J., Gallert C., Chatterjee D., Norra S. (2014) Organic carbon induced mobilization of iron and manganese in a West Bengal aquifer and the muted response of groundwater arsenic concentrations. Chemical Geology, 367, 51-62.

2013

9. Neidhardt H., Biswas A., Freikowski D., Majumder S., Chatterjee D., Berner Z. (2013) Reconstructing the sedimentation history of the Bengal Delta Plain by means of geochemical and stable isotopic data. Applied Geochemistry, 36, 70-82.

10. Neidhardt H., Berner Z., Freikowski D., Biswas A., Winter J., Chatterjee D., Norra S. (2013) Influences of groundwater extraction on the distribution of dissolved arsenic in shallow aquifers of West Bengal, India. Journal of Hazardous Materials, 262, 941-950.

11. Halder D., Bhowmick S., Biswas A., Chatterjee D., Nriagu J., Guha Mazumdar D. N., Slejkovec Z., Jacks G., Bhattacharya P. (2013) Risk of arsenic exposure from drinking water and dietary components: Implications for risk management in rural Bengal. Environmental Science & Technology, 47, 1120-1127.

12. Bhowmick S., Nath B., Halder D., Biswas A., Majumder S., Mondal P., Chakraborty S., Nriagu J., Bhattacharya P., Iglwsias M., Roman-Ross G., Guha Mazumder D., Bundschuh J., Chatterjee, D. (2013) Arsenic mobilization in the aquifers of three physiographic settings of West Bengal, India: understanding geogenic and anthropogenic influences. Journal of Hazardous Materials, 262, 915-923.

2012

13. Biswas A., Nath B., Bhattacharya P., Halder D., Kundu A. K., Mandal U., Mukherjee A., Chatterjee D., Morth C. M., Jacks G. (2012) Hydrogeochemical contrast between brown and grey sand aquifers in shallow depth of Bengal Basin: Consequences for Sustainable drinking water supply. Science of the Total Environment, 431, 402-412.

14. Halder D., Bhowmick S., Biswas A., Mandal U., Nriagu J., Guha Mazumdar D.N., Chatterjee D.; Bhattacharya, P. (2012) Consumption of brown rice: A potential pathway for arsenic exposure in rural Bengal. Environmental Science & Technology, 46, 4142-4148. (Highlighted in a science magazine in India: http://www.downtoearth.org.in/content/big-size-bigger-benefits)

15. Biswas A., Nath B., Bhattacharya P., Halder D., Kundu A. K., Mandal U., Mukherjee A., Chatterjee D., Jacks G. (2012) Testing tubewell platform color as a rapid screening tool for arsenic and manganese in drinking water wells. Environmental Science & Technology, 46, 434-440. (Highlighted in a science magazine in India: http://www.downtoearth.org.in/content/see-it-s-easy)

2011

16. Biswas A., Majumder S., Neidhardt H., Halder D., Bhowmick S., Mukherjee - Goswami A., Kundu A. K., Saha D., Berner, Z., Chatterjee, D. (2011) Groundwater chemistry and redox processes: depth dependent arsenic release mechanism. Applied Geochemistry, 26, 516-525.

2010

17. Chatterjee D., Halder D., Majumder S., Biswas A., Nath B., Bhattacharya P., Bhowmick S., Mukherjee-Goswami A., Saha D., Hazra, R., Maity P. B., Chatterjee D., Mukherjee A., Bundschuh J. (2010) Assessment of arsenic exposure from groundwater and rice in Bengal Delta region, West Bengal, India. Water Research, 44, 5803-5812.

2008

18. Lawson M., Ballentine C. J., Polya D. A., Boyce A. J., Mondal D., Chatterjee D., Majumder S., Biswas A. (2008) The geochemical and isotopic composition of ground waters in West Bengal: tracing ground-surface water interaction and its role in arsenic release. Mineralogical Magazine, 72, 441-444.

II. Book Chapter

1. Majumder S., Biswas A., Neidhardt H., Sarkar S., Berner Z., Bhowmick S., Mukherjee A., Chatterjee D., Chakraborty S., Nath B., Chatterjee D. (2015) An Insight into the Spatio-vertical Heterogeneity of Dissolved Arsenic in part of the Bengal Delta Plain Aquifer in West Bengal (India). In: Safe and Sustainable Use of Arsenic-Contaminated Aquifers in the Gangetic Plain: A Multidisciplinary Approach; A. L. Ramanathan, S. Johnston, A. Mukherjee, B. Nath (Eds.); Springer International Publishing, Cham, Switzerland and Capital Publishing Company, New Delhi, India; p. 175-192 (ISBN 978-3-319-16123-5).

2. Chatterjee D., Majumder S., Biswas A., Halder D., Bhowmick S., Chatterjee D., Mukherjee- Goswami A., Jana J., Saha D., Kundu A. K., Sarkar S. (2012) Arsenic in Grondwater of Young Bengal Delta Plain of India: It's Distribution and Geochemistry. In: Memoir 1 - Applied geochemistry: Groundwater Quality Evaluation and Control; S. Das, and D. Saha (Eds.); Indian Society of Applied Geochemists; Hyderabad; p. 170-185 (ISBN 81264019013).

3. Bhattacharya P., Jacks G., Nath B., Debashis Chatterjee D., Biswas A., Halder D., Majumder S., Bhowmick S., Ramanathan A.L. (2010) Natural arsenic in coastal groundwaters in the Bengal Delta region in West Bengal, India. In: Management and Sustainable Development of Coastal Zone Environment; A. L. Ramanathan, P. Bhattacharya, T. Dittmar, M. B. K. Prasad, B. R. Neupane (Eds.); Spinger and Capital Publishing Company: New Delhi; p. 146-160 (ISBN 978-90-481-3068-9).

III. Article in Conference Proceedings

1. Kundu A. K., Biswas A., Bhowmick S., Chatterjee D., Mukherjee A., Neidhardt H., Berner Z., Bhattacharya P. (2016) Variation of arsenic in shallow aquifers of the Bengal Basin: Controlling geochemical processes. In: P. Bhattacharya, M. Vahter, J. Jarsjo, J. Kumpiene, A. Ahmad, C. Sparrenbom, G. Jacks, M.E. Donselaar, J. Bundschuh, R. Naidu (eds.) "Arsenic Research and Global Sustainability, As 2016". Interdisciplinary Book Series: "Arsenic in the Environment-Proceedings". Series Editors: J. Bundschuh and P. Bhattacharya, Publisher: CRC Press/Balkema, Taylor and Francis (ISBN: 978-1-138-02941-5), p. 52-53.

2. Annaduzzaman M., Biswas A., Hossain M., Bhattacharya P., Alauddin M., Cekovic R., Alauddin S., Shaha S. (2016) Tubewell platform color as a screening tool for arsenic in shallow drinking water wells in Bangladesh. In: P. Bhattacharya, M. Vahter, J. Jarsjo, J. Kumpiene, A. Ahmad, C. Sparrenbom, G. Jacks, M.E. Donselaar, J. Bundschuh, R. Naidu (eds.) "Arsenic Research and Global Sustainability, As 2016". Interdisciplinary Book Series: "Arsenic in the Environment-Proceedings". Series Editors: J. Bundschuh and P. Bhattacharya, Publisher: CRC Press/Balkema, Taylor and Francis (ISBN: 978-1-138-02941-5), p. 632-633.

3. Chatterjee D., Nath B., Chakraborty S., Majumder S., Biswas A., Bhowmick S., Halder D., Mondal P., Kundu A., Saha D., Barman S., Biswas U., Saha I., Das A., Sarkar S., Chatterjee D. (2013). Groundwater arsenic in the fluvial Bengal plains: geochemistry and mitigation. Procedia Earth and Planetary Science, 7, p. 143-146.

4. Biswas A., Bhattacharya P., Halder D., Jacks G., Nath B., Mukherjee A., Kundu A. K., Mandal U., Chatterjee D. (2012). Potentiality of shallow brown sand aquifers as an alternative drinking water source in Bengal Basin. In: J.C. Ng, B. N. Noller, R. Naidu, J. Bundschuh & P. Bhattacharya (eds.) "Understanding the Geological and Medical Interface of Arsenic, As 2012". Interdisciplinary Book Series: "Arsenic in the Environment-Proceedings". Series Editors: J. Bundschuh and P. Bhattacharya, CRC Press/Balkema, Taylor and Francis (ISBN-13: 978-0-415-63763-3), p. 67-68.

5. Halder D., Biswas A., Bhattacharya P., Bhowmick S., Mandal U., Chatterjee D., Nriagu J. (2012). Arsenic exposure and non-cancer health risk from consumption of brown rice in rural Bengal, India. In: J.C. Ng, B. N. Noller, R. Naidu, J. Bundschuh & P. Bhattacharya (eds.) "Understanding the Geological and Medical Interface of Arsenic, As 2012". Interdisciplinary Book Series: "Arsenic in the Environment-Proceedings". Series Editors: J. Bundschuh and P. Bhattacharya, CRC Press/Balkema, Taylor and Francis (ISBN-13: 978-0-415-63763-3), p. 505-507.

6. Bhattacharya P., Biswas A., Halder D., Jacks J., Nath B., Chatterjee D., Mukherjee A. (2012). Tubewell platform color: Assessment of a tool for rapid screening of arsenic and manganese in well water. In: J.C. Ng, B. N. Noller, R. Naidu, J. Bundschuh & P. Bhattacharya (eds.) "Understanding the Geological and Medical Interface of Arsenic, As 2012". Interdisciplinary Book Series: "Arsenic in the Environment-Proceedings". Series Editors: J. Bundschuh and P. Bhattacharya, CRC Press/Balkema, Taylor and Francis (ISBN-13: 978-0-415-63763-3), p. 515-518.

7. Chatterjee D., Majumder S., Biswas A., Sarkar S., Kundu A. K., Mukherjee A., Bhowmick S., Roman-Ross G., Chatterjee D., Neidhardt H., Berner Z. (2012). Spatial heterogeneity of arsenic in a deltaic groundwater environment of West Bengal, India. In: J.C. Ng, B. N. Noller, R. Naidu, J. Bundschuh & P. Bhattacharya (eds.) "Understanding the Geological and Medical Interface of Arsenic, As 2012". Interdisciplinary Book Series: "Arsenic in the Environment-Proceedings". Series Editors: J. Bundschuh and P. Bhattacharya, CRC Press/Balkema, Taylor and Francis (ISBN-13: 978-0-415-63763-3), p. 65-66.

8. Biswas A., Hossain M., Mozumder M. R. H., Von Bromssen M., Nath B., Bhattacharya P., Islam M. M., Rahman M. M., Ahmed K. M., Hasan M. A., Jacks G., Rahman M., Rashid S. M. I. (2011) Hydrogeochemical variations with varying aquifer depths in Matlab Upazila, SE Bangladesh: Implications for aquifer sustainability. Proc. 11th International Conference on the Biogeochemistry of Trace Elements (ICOBTE), July 3-7, 2011, Florence, Italy, Part I, p. 117-118.

9. Chatterjee D., Biswas A., Halder D., Majumder S., Bhattacharya P. (2011) Arsenic geochemistry in Bengal Delta Plain: shallow and deep aquifer levels (West Bengal, India). Proc. 11th International Conference on the Biogeochemistry of Trace Elements (ICOBTE), July 3-7, 2011, Florence, Italy, Part I, p. 119-120.

10. Majumder S., Chatterjee D., Biswas A., Neidhardt H., Berner Z. (2011) Multivariate analysis to explain arsenic mobilization in rural West Bengal, India. Proc. 11th International Conference on the Biogeochemistry of Trace Elements (ICOBTE), July 3-7, 2011, Florence, Italy, Part I.

11. Neidhardt H., Freikowski D., Berner Z., Biswas A., Winter J., Chatterjee D. (2010) Arsenic mobilization into groundwater in West Bengal, India by sucrose injection. Schriftenreihe Der Deutschen Gesellschaft For Geowissenschaften, Heft 68, p. 415-416.

12. Chatterjee D., Biswas A., Majumder S., Berner Z., Neidhardt H. (2010) Geochemistry of As in Deltaic environment: shallow and deep aquifer. In: P. Birkle & I.S. Torres-Alvarado (eds.) Proceedings of the 13th Water-Rock Interaction Symposium, WRI-13, Guanajuato, Mexico, 16-20 August, 2010. Balkema, CRC Press/Taylor & Francis, p. 437-440.

13. Majumder S., Chatterjee D., Biswas A., Berner Z., Neidhardt H. (2010) Characterization of factors affecting arsenic distribution in groundwater. In: P. Birkle & I.S. Torres-Alvarado (eds.) Proceedings of the 13th Water-Rock Interaction Symposium, WRI-13, Guanajuato, Mexico, 16-20 August, 2010. Balkema, CRC Press/Taylor & Francis, p. 403-406.

14. Biswas A., Chatterjee D., Majumder S., Berner Z., Neidhardt H. (2010) Redox zoning in arsenic-rich groundwater, West Bengal, India. In: J.-S. Jean, J. Bundschuh & P. Bhattacharya (eds.) "Arsenic in Geosphere and Human Diseases, As 2010". Interdisciplinary Book Series: "Arsenic in the Environment-Proceedings". Series Editors: J. Bundschuh and P. Bhattacharya, CRC Press/Balkema, Taylor and Francis (ISBN-13: 978-0-415-57898-1), p. 59-60.

15. Neidhardt H., Berner Z., Biswas A., Chatterjee D., Majumder S. (2010) Temporal and spatial variations of geogenic arsenic in an aquifer in West Bengal, India. In: J.-S. Jean, J. Bundschuh & P. Bhattacharya (eds.) "Arsenic in Geosphere and Human Diseases, As 2010". Interdisciplinary Book Series: "Arsenic in the Environment-Proceedings". Series Editors: J. Bundschuh and P. Bhattacharya, CRC Press/Balkema, Taylor and Francis (ISBN-13: 978-0-415-57898-1), p. 85-86.

16. Chatterjee D., Biswas A., Bhowmick S., Halder D., Hazra R., Majumder S., Mukherjee-Goswami A., Saha D., Nath B. (2010) Geochemistry of arsenic in Bengal Delta Plain (West Bengal, India). In: J.-S. Jean, J. Bundschuh & P. Bhattacharya (eds.) "Arsenic in Geosphere and Human Diseases, As 2010". Interdisciplinary Book Series: "Arsenic in the Environment-Proceedings". Series Editors: J. Bundschuh and P. Bhattacharya, CRC Press/Balkema, Taylor and Francis (ISBN-13: 978-0-415-57898-1), p. 125-126.

IV. Abstract in Conference Proceedings

1. Bhattacharya P., Mukherjee A., Biswas A., Hossain M., von Bromssen M. (2016) Potential of using arsenic-safe aquifers as sustainable drinking water sources in arsenic-affected areas of Bengal basin, India and Bangladesh. EGU General Assembly Conference Abstracts 18, 16907.

2. Biswas A., Neidhardt H., Kundu A. K., Halder D., Chatterjee D., Berner Z., Jacks G., Bhattacharya P. (2014) Characterizing the controlling geochemical processes for spatial, vertical and temporal variation of arsenic in shallow groundwater of the Bengal Basin. Geol. Soc. Amer., Abstracts with Programs, 46(6): p. 689.

3. Essilfie - Dughan J., Hendry M. J., Biswas A., Chen N. (2014) Distribution of Selenium in Coal Waste Rock, Elk Valley, British Columbia, Canada. Geol. Soc. Amer., Abstracts with Programs, 46(6): p. 677.

4. Biswas A., Gustafsson J. P., Neidhardt H., Halder D., Kundu A. K., Chatterjee D., Berner Z., Bhattacharya P. (2013) Estimating the role of competing ions on the arsenic mobilization processes in the aquifers of Bengal basin by surface complexation modeling. Goldschmidt Abstracts 2013: Mineralogical Magazine, 77, p. 710.

5. Biswas A., Gustafsson J. P., Neidhardt H., Halder D., Kundu A. K., Chatterjee D., Berner Z., Bhattacharya P. (2013) Surface complexation modeling of temporal variability of arsenic in groundwater: estimating the role of competing ions in the mobilization processes. 12th International Conference on the Biogeochemistry of Trace Elements (ICOBTE); Athens, USA, 16-20 June, 2013.

6. Biswas A., Bhattacharya P., Nath B., Mukherjee A., Halder D., Chatterjee D., Morth C.M., Jacks G. (2012). Potentiality of shallow brown sand aquifers as safe source of drinking water in arsenic affected regions of Bengal Basin. Geol. Soc. Amer., Abstracts with Programs, 44(7): p. 156.

7. Halder D., Biswas A., Bhowmick S., Chatterjee D., Nriagu J., Guha Mazumder D.N., Zdenda S., Jacks G., Bhattacharya P. (2012). Assessment of arsenic exposure risk from drinking water and dietary components in rural Bengal. Geol. Soc. Amer., Abstracts with Programs, 44(7): p. 155.

8. Annaduzzaman M., Biswas A., Hossain M., Ahmed K.M., Hasan M.A., Jacks G., Sandhi A., Bhattacharya P. (2012). Tubewell platform color as a tool for screening arsenic and manganese in shallow drinking water wells: A study from Matlab, Bangladesh. Geol. Soc. Amer., Abstracts with Programs, 44(7): p. 264.

9. Bhattacharya P., Biswas A., Nath B., Chatterjee D., Halder, D., Mukherjee A. (2011) Tubewell platform color-a tool for screening arsenic, iron and manganese in tubewell Water. . Geol. Soc. Amer., Abstracts with Programs, 43(5): p. 221.

10. Halder D., Bhowmick S., Biswas A., Mondal U., Bhattacharya P., Chatterjee D. (2011) Arsenic accumulation in brown (unpolished) rice grain: a field scale study in rural West Bengal, India. Geol. Soc. Amer., Abstracts with Programs, 43(5): p. 340.

11. Chatterjee D., Kundu A. K., Biswas, A., Halder, D., Bhattacharya, P., Bhowmick, S., Majumder, S. (2011) Arsenic in groundwater of young Bengal Delta sediment: its distribution and geochemistry in shallow aquifer. Geol. Soc. Amer., Abstracts with Programs, 43(5): p. 339.

12. Berner Z., Neidhardt H., Biswas A., Majumder S., Freikowski D., Chatterjee D., Winter J., Gallert C. (2011) Role of microbiogeochemical processes in mobilization of arsenic in aquifer sediment of Bengal Delta Plain: an experimental approach. Int. Conf. Recent Advances in Earth Resource Research-The Road to the Future, Salem, India. 7-9 September, 2011.

13. Neidhardt H., Freikowski D., Berner Z., Biswas A., Norra S., Winter J., Chatterjee D. (2011): Biogeochemical mobilization of arsenic from aquifer sediments in West Bengal, India. Biospektrum. Tagungsband Zur Vaam-Jahrestagung, Karlsruhe, 91, 2011.

14. Biswas A., Halder D., Neidhardt H., Bhowmick S., Majumder S., Saha D., Bhattacharya P., Berner Z., Chatterjee D. (2010) Depth dependent geochemical processes and occurrence of high dissolve arsenic in groundwater, West Bengal India. Geol. Soc. Amer., Abstracts with Programs, 42(5): p. 550.

15. Halder D., Biswas A., Bhowmick S., Majumder S., Saha D., Bhattacharya P., Chatterjee D. (2010) Exposure of arsenic from groundwater and rice: a case study from West Bengal, India. Geol. Soc. Amer., Abstracts with Programs, 42(5): p. 436.

16. Biswas A., Majumder S., Neidhardt H., Halder D., Chatterjee D., Berner Z. (2010) Variability of arsenic in multilevel water wells of Chakdaha, West Bengal, India: A field scale study. National Seminar on Current Trends in Chemistry-IV, 26 February 2010, organized by Department of Chemistry, University of Kalyani, Kalyani, West Bengal, India.

17. Lawson M., Ballentine C.J., Polya D.A., Zhou Z., Smith K., Boyce A.J., Chatterjee D., Majumder S., Biswas A. (2009) Isotopic investigation into the role of surface waters in promoting arsenic release in Bengali groundwaters. Geochimica et Cosmochimica Acta Supplement, 73, p 730.

Teaching

1. Environmental Chemistry
2. Environmental Chemistry Lab