INTRODUCTION
3
2
-1
-1
2
-1
3
3-
4
3-
GEOLOGY AND PHYSIOGRAPHY OF THE BENGAL DELTA PLAIN
STUDY AREA
o
o
o
METHODS
Sampling (both aqueous and solid phase)
3
®
o
Analysis (both aqueous and solid phase)
3
4
3-
tot
-1
3
RESULTS AND DISCUSSION
Groundwater chemistry and behavior of arsenic
3
3-
-1
-1
tot
-1
-1
3-
-1
4
3-
-1
-1
4
2-
3-
-1
3-
4
2-
4
3-
4
3-
4
3-
2+
-1
2+
-1
-1
-1
tot
-1
-1
tot
-1
-1
tot
tot
tot
-1
tot
4
3-
3-
tot
3-
o
2
2
tot
tot
3-
3-
4
2-
3-
tot
3-
4+
2
4+
Distribution of arsenic species
Sediment chemistry
tot
-1
tot
-1
tot
-1
2
2
ox
ox
ox
ox
ox
ox
ox
ox
ox
ox
-1
-1
-1
-1
-1
ox
ox
ox
ox
ox
ox
ox
ox
4
acet
-1
acet
-1
acet
-1
ox
ox
ox
acet
acet
acet
acet
4
3-
ox
-1
ox
-1
ox
-1
ox
-1
ox
-1
ox
ox
acet
-1
ox
acet
-1
ox
acet
-1
ox
4
3-
ox
ox
2
4
3-
acet
4
3-
acet
4
3-
4
3-
ox
ox
2
ox
4
3-
acet
acet
acet
ox
4
4
ox
acet
ox
acet
ox
ox
acet
acet
Geochemistry and Arsenic affinity
3-
4+
2+
CONCLUSION
ox
ACKNOWLEDGEMENTS
REFERENCES
-Department of Chemistry, University of Kalyani, Kalyani, Nadia – 741235, West Bengal, India
- Department of Geological Sciences, Jadavpur University, Calcutta – 700 032, India
-Department of Land and Water Resources Engineering, Royal Institute of Technology, SE-100 44 STOCKHOLM, Sweden
- Department of Geology, University of Dhaka, Dhaka 1000, Bangladesh