1. Bangladesh University of Engineering and Technology, Dhaka-1000, Bangladesh.
2. Ahuja Consulting, Calabash, NC 28467, USA.
3. Department of Chemistry, Wagner College, Staten Island, NY 10301, USA.
4. Department of Water Resources and Drinking Water, Swiss Federal Institute of Aquatic Science and Technology (Eawag), CH-8600 Duebendorf, Switzerland.
5. School of Earth, Atmospheric and Environmental Sciences, University of Manchester, Manchester M13 9PL, UK.
6. Earth Institute, Columbia University, New York, NY 10027, USA.
7. Department of Geology, University of South Florida, Tampa, FL 33620, USA.
8. Environmental Toxicology, University of California, Santa Cruz, Santa Cruz, CA 95064, USA.
9. Department of Environmental Sciences, Barnard College, Columbia University, New York, NY 10027, USA.
10. Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA.