Groundwater arsenic in the Red River delta, Vietnam ... - Fiva

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Postma et al., submitted to Geochim. Cosmochim. Acta on the floodplain in ponds and channels and at sites where infiltration into the aquifer is high it will introduce arsenic into the groundwater. Acknowledgements This work has been supported by DANIDA as part of a research capacity building project "Water Resources Research in Vietnam". REFERENCES Ahmed, M.F., Ahuja, S., Alauddin, M., Hug, S.J., Lloyd, J.R., Pfaff, A., Pichler, T., Saltikov, C.,Stute, M., van Geen, A., 2006. Epidemiology – ensuring safe drinking water in Bangladesh. Science 314, 1687–1688. Akai, J., Izumi, K., Fukuhara, H., Masuda, H., Nakano, S., Yoshimura,T., et al., 2004. Mineralogical and geomicrobiological investigations on groundwater arsenic enrichment in Bangladesh. Appl. Geochem. 19, 215–230. Alexandratos V.G., Elzinga E.J. and Reeder R.J. (2007) Arsenate uptake by calcite: Macroscopic and spectroscopic characterization of adsorption and incorporation mechanisms. Geochim. Cosmochim. Acta 71, 4172-4187. Anawar, H.M., Akai, J., Yoshioka, T., Konohira, E., Lee, J.Y. Fukuhara, H., Tari Kul Alam, M., Garcia-Sanchez, A. 2006. Mobilization of arsenic in groundwater of Bangladesh: evidence from an incubation study. Environ. Geochem. Health 28, 553-565. Appelo, C.A.J., Postma, D., 2005. Geochemistry Groundwater and Pollution, 2nd ed. Balkema Publ. 649 pp. 27
Postma et al., submitted to Geochim. Cosmochim. Acta Berg, M., Stengel, C., Trang, P.T.K., Viet, P.H., Sampson, M.L., Leng, M., Samreth, S., Fredericks, D., 2007. Magnitude of arsenic pollution in the Mekong and Red River Deltas — Cambodia and Vietnam. Sci. Total Environ. 372, 413–425. Cline, J.D., 1967. Spectrophotometric determination of hydrogen sulfide in natural waters. Limnol. Oceanogr. 14, 454–458. Dixit S. and Hering J.G. (2003) Comparison of arsenic(V) and arsenic(III) sorption onto iron oxide minerals: Implications for arsenic mobility. Environ. Sci. Technol. 37, 4182-4189. Dowling, C.B., Poreda, R.J., Basu, A.R., Peters, S.L., Aggarwal, P.K., 2002. Geochemical study of arsenic release mechanisms in the Bengal Basin groundwater. Water Resour. Res. 38, 1173–1190. Gault, A.G., Islam, F.S., Polya, D.A., Charnock, J.M., Boothman, C., Chatterjee, D., Lloyd, J.R., 2005. Microcosm depth profiles of arsenic release in a shallow aquifer, West Bengal. Mineral. Mag. 69, 855–863. Goldberg S. and Glaubig R.A. (1988) Anion sorption on a calcareous, montmorillonitic soil–arsenic. Soil Sci. Soc. Am. J. 52, 1297-1300. Harvey C.F., Swartz C.H., Badruzzaman A.B.M., Keon-Blute N., Yu W., Ali A., Jay J., Beckie R., Niedan V., Brabander D., Oates P.M., Ashfaque K.N., Islam S., Hemond H.F., Ahmed M.F., 2002. Arsenic mobility and groundwater extraction in Bangladesh. Science 298, 1602–1606. Heimann, A.C., Blodau, C., Postma, D., Larsen, F., Pham, H.V., Pham, Q.N, Jessen, S.,.Mai, T.D., Nguyen, T.M.H., Jakobsen, R., 2007: Hydrogen thresholds and steady state concentrations associated with microbial arsenate respiration. Env. Sci. Technol. 41, 2311-2317 . 28
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Groundwater arsenic in the Red Rive
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Søren Jessen Groundwater arsenic i
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organic matter may prevent As mobil
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Resumé Naturligt frigivet arsen (A
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efterfølgende forsøgt at opstille
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Preface This PhD thesis deals with
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Table of contents 1 INTRODUCTION: T
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The PhD research presented in this
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educed form as As(III), which is al
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A more complex and intimate relatio
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sedimentary As content (Postma et a
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(Anawar and Mihaljevi, 2009), and g
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3 Regional As distribution in the R
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in large part by changes in the eus
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In the Red River delta, the Pleisto
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the Red River delta, which are not
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5 The mitigation potential of bank
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Noteworthy is, that the ratio of Fe
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trend in the distribution of the RF
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2008) or the Hach or Merck test kit
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Badloe C., Nguyen T. P. T. and Nguy
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Driehaus W., Seith R. and Jekel M.
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Islam F. S., Boothman C., Gault A.
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Mondal D. and Polya D. A. (2008) Ri
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A. Ali and Z. Adeel). ITN Centre, B
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Ahmed K. M. (2006) A transect of gr
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Arsenic in groundwater of the Red R
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In short, there is a consensus amon
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The local geology shows mainly sand
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ane concentration and P CO2 values
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Fig. 7. The distribution of arsenic
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H3AsO3 þ H2O $ H2AsO4 þ 3H þ þ
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Fig. 12. The relative composition o
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of the Fe-oxides in the upper 3 m c
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found that while As(V) coprecipitat
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desh: further evidence of decouplin
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Controlling geological and hydrogeo
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Here the results of the geological
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sediments. In general, the coarser
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Fig. 5. Thickness of the clay-rich
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a b c The groundwater head distribu
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Jessen et al., manuscript to be sub
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Table 1
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Fig. 1
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Fig. 3
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Fig. 5
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Fig. 7
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Fig. 9
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Fig. 11
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