Letteratura scientifica selezionata sul tema "Arsenic Environmental aspects Bangladesh"
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Articoli di riviste sul tema "Arsenic Environmental aspects Bangladesh"
Peters, Gregory R., Ross F. McCurdy e J. Thomas Hindmarsh. "Environmental Aspects of Arsenic Toxicity". Critical Reviews in Clinical Laboratory Sciences 33, n. 6 (gennaio 1996): 457–93. http://dx.doi.org/10.3109/10408369609080055.
Testo completoKile, Molly L., E. Andres Houseman, Carrie V. Breton, Thomas Smith, Quazi Quamruzzaman, Mahmuder Rahman, Golam Mahiuddin e David C. Christiani. "Dietary Arsenic Exposure in Bangladesh". Environmental Health Perspectives 115, n. 6 (giugno 2007): 889–93. http://dx.doi.org/10.1289/ehp.9462.
Testo completoZaved Kaiser Khan, Mohammad. "Arsenic mitigation measures in Bangladesh". Revue des sciences de l’eau 25, n. 1 (28 marzo 2012): 49–67. http://dx.doi.org/10.7202/1008535ar.
Testo completoYokota, H., K. Tanabe, M. Sezaki, Y. Yano, K. Hamabe, K. Yabuuchi e H. Tokunaga. "Arsenic contamination in groundwater of Samta, Bangladesh". Water Science and Technology 46, n. 11-12 (1 dicembre 2002): 375–80. http://dx.doi.org/10.2166/wst.2002.0765.
Testo completoRahman, Mahfuzar. "The Bangladesh Arsenic Catastrophe: Clinical Manifestations". Tropical Doctor 33, n. 1 (gennaio 2003): 42–44. http://dx.doi.org/10.1177/004947550303300121.
Testo completoMukherjee, A. B., e P. Bhattacharya. "Arsenic in groundwater in the Bengal Delta Plain: slow poisoning in Bangladesh". Environmental Reviews 9, n. 3 (1 settembre 2001): 189–220. http://dx.doi.org/10.1139/a01-007.
Testo completoHABIB, M. A., S. MIONO, K. SERA e S. FUTATSUGAWA. "PIXE ANALYSIS OF HAIR IN ARSENIC POLLUTION, BANGLADESH". International Journal of PIXE 12, n. 01n02 (gennaio 2002): 19–34. http://dx.doi.org/10.1142/s0129083502000044.
Testo completoAKMAM, Wardatul, e Md Fakrul ISLAM. "Arsenic Contamination in Ground Water in Bangladesh". Studies in Regional Science 37, n. 3 (2007): 829–40. http://dx.doi.org/10.2457/srs.37.829.
Testo completoHindmarsh, J. Thomas, Ross F. McCurdy e John Savory. "Clinical and Environmental Aspects of Arsenic Toxicity". CRC Critical Reviews in Clinical Laboratory Sciences 23, n. 4 (gennaio 1986): 315–47. http://dx.doi.org/10.3109/10408368609167122.
Testo completoGamble, Mary V., Xinhua Liu, Habibul Ahsan, J. Richard Pilsner, Vesna Ilievski, Vesna Slavkovich, Faruque Parvez, Diane Levy, Pam Factor-Litvak e Joseph H. Graziano. "Folate, Homocysteine, and Arsenic Metabolism in Arsenic-Exposed Individuals in Bangladesh". Environmental Health Perspectives 113, n. 12 (dicembre 2005): 1683–88. http://dx.doi.org/10.1289/ehp.8084.
Testo completoTesi sul tema "Arsenic Environmental aspects Bangladesh"
Uddin, G. M. Saleh. "Groundwater contamination by arsenic in Bangladesh : causes, consequences and solutions". Title page, table of contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09ENV/09envu18.pdf.
Testo completoHuhmann, Brittany Lynn. "Mitigating the impacts of arsenic on human health and rice yield in Bangladesh". Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/120601.
Testo completoThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references.
Naturally-occurring groundwater arsenic can threaten human health and food security. In Bangladesh, >50 million people are estimated to have chronically consumed water with arsenic above the World Health Organization (WHO) guideline of 10 μg/L, which can contribute to cancer, cardiovascular disease, and reproductive and developmental effects. Studies relating arsenic exposure to health impacts generally estimate dose based on participants' primary household wells. Using a mass-balance for arsenic and water, we estimate that participants in Araihazar, Bangladesh obtain 37±8% of their water from primary household wells and 31±14% from other wells, and we thus recommend the inclusion of other wells in dose estimation. Concentrations of arsenic in well water are spatially variable, enabling many exposed households to switch to nearby lower-arsenic wells in response to area-wide well testing. Following well testing and education in Araihazar, arsenic exposure declined and remained lowered for at least eight years. Participants with arsenic-unsafe wells were 6.8 times more likely to switch wells over the first two years and 1.4-1.8 times more likely to switch wells over the ensuing decade. Rice comprises more than 70% of calories consumed in Bangladesh, and rice yield is negatively impacted by the buildup of arsenic in soil from irrigation with high-arsenic water. We investigated the effect of soil arsenic on yield using a controlled study design where we exchanged the top 15 cm of soil between high-arsenic and low-arsenic plots. Differences in yield were negatively correlated to differences in soil arsenic between adjacent soil replacement and control plots, suggesting that boro rice yield countrywide may be diminished by 7-26% due to arsenic in soil. Soil testing and removal of high-arsenic soil may enable farmers to mitigate the impacts of arsenic on rice. Twelve measurements made with the ITS Econo-Quick field kit could be used to estimate whether soil arsenic was above or below a 30 mg/kg intervention threshold with 80-90% accuracy. A soil inversion, where deep low-arsenic soil was exchanged with surface high-arsenic soil, decreased soil arsenic, organic carbon, nitrogen, and phosphorus concentrations by about 40% in the top 20 cm of soil and improved rice yield by 15-30%.
by Brittany Lynn Huhmann.
Ph. D. in Environmental Engineering
Ashfaque, Khandaker. "Effect of hydrological flow pattern on groundwater arsenic concentration in Bangladesh by Khandaker Ashfaque". Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42218.
Testo completoIncludes bibliographical references.
Widespread arsenic contamination of groundwater has become a major concern in Bangladesh since the water supply, particularly in rural areas, is heavily dependent on groundwater. However, relative to the extent of research on biogeochemical processes of arsenic mobilization, very little work has been conducted to understand the complex transient dynamics of groundwater flow, and the transport of arsenic and other solutes that control its mobility in the area. A detailed three-dimensional hydrological model of our study area in Munshiganj indicates that: (1) the shallow aquifer acts primarily as a conduit for flow from ponds and rice fields to irrigation wells and rivers; (2) most inflow to the aquifer occurs during the dry season, and monsoon contributes relatively little to the inflow since the aquifer storage is small; (3) since the increase in irrigation pumping and pond construction have changed the groundwater flow dynamics, arsenic concentrations are unlikely to be at steady-state. These observations are consistent with those from the lumped-parameter model. Analysis of various fluxes from the three-dimensional groundwater model also reveals that ponds provide the largest source of recharge to the aquifer, and hence, is a potential source of dissolved arsenic to the subsurface. Accordingly, a "Pond Hypothesis" has been developed suggesting that arsenic mobilization in Bangladesh aquifer is deriving from reductive dissolution of various arsenic bearing oxides (the widely accepted mechanism for arsenic mobilization in Bangladesh) deposited at the pond bottoms. The process of reductive dissolution occurs in the presence of organic matter and under reducing environment, when residing microbes respire on oxygen from oxide-minerals (e.g. Fe and Mn oxides) to process the organic matter for growth, and subsequently causes release of arsenic associated with the oxide-minerals to the aqueous phase.
(cont.) Afterwards, at the end of flooding season, the dissolved arsenic along with mixture of various dissolved solutes from pond bottoms enters the aquifer and is driven towards the well screen both vertically due to overlying recharge and horizontally due to increased pumping. Extensive small-scale pump tests and one large-scale extended pumping experiment carried out at our study area in Munshiganj indicates that the aquifer is anisotropic in nature creating flow convergence at the depth of irrigation well screen. Results from a three-dimensional hydrological model suggests that groundwater irrigation has changed the flow dynamics in the area - not only by reducing the residence and travel times, but also carrying solutes to particular depth from different sources and locations. Model simulations carried out for three different scenarios - 'Current Stage' (if the current flow condition continues), 'Ancient Stage' (before the advent of habitation and irrigation practices), and 'Inception Stage' (the beginning of irrigation and creation of ponds) - indicates that in general, the rice field water dominates at the shallowest depth while pond water dominates at the depth of irrigation well, and the contribution from river water increases with depth. Analysis of the average groundwater age distribution indicates that younger age dominates at shallower depths. More importantly, the age values at the monitoring locations can be explained by the relative contribution of recharge water from different sources. Furthermore, modeling results indicate that the groundwater age at 30m depth in Bejgoan Field Site is about 24-60 years old, which is consistent with the tritium age measurement at the same depth. The stable water isotope values in our study area shows a similar profile to the dissolved arsenic concentration, and their peak concentrations coincidence with the depth of irrigation well.
(cont.) Furthermore, comparison of calculated and measured isotopic values at the Bejgoan Field Site indicates that the calculated values are within the range of measured values, and thereby, confers that the observed isotopic profile results from the mixing of water from various recharge sources. More importantly, the lighter water at the depth of peak arsenic concentration can only be derived from lighter pond water recharge in November, whereas recharge from river and rainfall mainly occurs after March when those waters are actually heavier. Finally, observation of two distinct peaks in the dissolved arsenic concentration profile from a recently installed cluster beside a highly recharging pond provides a direct evidence supporting the "Pond Hypothesis". While the peak concentration at 30-40m depth corresponds to the characteristic regional hump observed in our study area, the second peak at a shallower depth (20m) has been explained as the local arsenic plume originating from the nearby pond bottom.
Ph.D.
KARTHIK, BHAMIDIMARRI B. K. "SPATIAL VARIABILITY OF GROUNDWATER ARSENIC IN BANGLADESH: AN EVALUATION OF GEOLOGIC AND PHYSICAL CONTROLS". University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1005673192.
Testo completoNeumann, Rebecca B. "The hydrogeochemistry of pond and rice field recharge : implications for the arsenic contaminated aquifers in Bangladesh". Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/57548.
Testo completoThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student submitted PDF version of thesis. Page 290 blank.
Includes bibliographical references.
The shallow aquifers in Bangladesh, which provide drinking water for millions and irrigation water for innumerable rice fields, are severely contaminated with geogenic arsenic. Water mass balance calculations show that groundwater-irrigated rice fields and man-made ponds are the primary sources of recharge to the contaminated aquifers. We studied the hydrology and chemistry of these anthropogenic recharge sources to determine the impact they have on groundwater arsenic concentrations. Our hydrogeochemical investigation involved fieldwork, laboratory analyses, and modeling. The field research spanned three years and included the deployment of a sensor network to continually monitor soil moisture and water potential, tracer tests to visualize flow patterns, soil cores to determine soil properties, and soil and water samples to ascertain chemical characteristics. The large amount of generated data were synthesized with hydrologic, geochemical and mass-balance models. The study showed that physical and chemical differences between rice fields and ponds explain the spatial patterns of arsenic in the Bangladeshi aquifers. Recharge from rice fields is both temporally and spatially heterogeneous. It is focused through bunds (the raised boundaries around the perimeter of fields) and depends on irrigation intervals. Flow from ponds is constant and uniform through the pond sediments. These distinct hydrologic behaviors produce different water chemistries. Ponds contribute anoxic recharge elevated in labile organic carbon, while rice fields contribute semi-oxic recharge that lacks labile organic carbon.
(cont.) The labile organic carbon in the pond recharge stimulates microbial respiration that mobilizes sediment-bound arsenic, contributing dissolved arsenic to the aquifers. Conversely, rice-field recharge does not mobilize arsenic. In fact, rice fields act as an arsenic sink. Irrigation moves arsenic-rich groundwater from the aquifers and deposits it on the rice fields. Most of the deposited arsenic does not return to the aquifers; it is sorbed by the field's surface soil and bunds, and is swept away in the monsoon floods. The results demonstrate how land-use changes in Bangladesh have impacted groundwater arsenic concentrations.
by Rebecca B. Neumann.
Ph.D.
Savoie, Courtney Beth Young. "Arsenic Mobility and Compositional Variability in High-Silica Ash Flow Tuffs". PDXScholar, 2013. https://pdxscholar.library.pdx.edu/open_access_etds/1012.
Testo completoHalim, Sadeka. "Invisible again : women and social forestry in Bangladesh". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ64569.pdf.
Testo completoSwarna, Anitha. "Removal of Arsenic Using Iron Coated Limestone". TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1342.
Testo completoLesley, Michael Patrick. "The fluxes and fates of arsenic, selenium, and antimony from coal fired power plants to rivers". Thesis, Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04082004-180307/unrestricted/lesley%5fmichael%5fp%5f200312%5fms.pdf.
Testo completoLou, Laiqing. "Arsenic uptake, accumulation and tolerance in Chinese brake fern (Pteris vittata L., an arsenic hyperaccumulator) under the influence of phosphate". HKBU Institutional Repository, 2008. http://repository.hkbu.edu.hk/etd_ra/928.
Testo completoLibri sul tema "Arsenic Environmental aspects Bangladesh"
Bangladesh. Arsenic Policy Support Unit., Great Britain. Dept. for International Development, Bangladesh. e UNICEF Bangladesh, a cura di. Not just red or green: An analysis of arsenic data from 15 upazilas in Bangladesh. Dhaka: Govt. of the People's Republic of Bangladesh, Ministry of Local Govt., Rural Development, and Co-operatives, Dept. of Public Health & Engg., Arsenic Policy Support Unit, 2004.
Cerca il testo completoTamaki, Stanley. Environmental biochemistry of arsenic. Sacramento, CA: San Joaquin Valley Drainage Program, 1989.
Cerca il testo completoFarhana, Sultana, Mannan Fatema e Bangladesh. Arsenic Policy Support Unit., a cura di. Selected papers on the social aspects of arsenic and arsenic mitigation in Bangladesh. Dhaka: Arsenic Policy Support Unit, 2006.
Cerca il testo completoInternational Conference on Bangladesh Environment (2nd 2002 Dhaka, Bangladesh). Bangladesh environment, 2002: A compilation of technical papers of the 2nd International Conference on Bangladesh Environment (ICBEN-2002). A cura di Ahmed M. Feroze, Tanveer Saleh, Badruzzaman A. B. M e Bangladesh Poribesh Andolon. Dhaka: Scientific Subcommittee on behalf of the Bangladesh Poribesh Andolon, 2002.
Cerca il testo completoname, No. Arsenic in ground water. Boston, MA: Kluwer Academic Publishers, 2003.
Cerca il testo completoFeroze, Ahmed M., M. Ashraf Ali, Adeel Zafar, Bangladesh University of Engineering and Technology. e United Nations University, a cura di. Fate of arsenic in the environment. [Dhaka]: Published by ITN Centre, BUET on behalf of Bangladesh University of Engineering and Technology and The United Nations University, 2003.
Cerca il testo completoArsenic: Natural and anthropogenic. Boca Raton: CRC Press, 2011.
Cerca il testo completoH, Brammer, e Richards K. S, a cura di. Arsenic pollution: A global synthesis. Malden, MA, USA: Blackwell, 2009.
Cerca il testo completoKamal, Golam Monowar. Environmental bibliography of Bangladesh. Dhaka, Bangladesh: Swedish International Development Authority, 1994.
Cerca il testo completoJohnson, Art. Arsenic concentrations in three Palmer Lake sediment samples. Olympia, WA: Washington State Dept. of Ecology, 2002.
Cerca il testo completoCapitoli di libri sul tema "Arsenic Environmental aspects Bangladesh"
Shukla, Anurakti, e Sudhakar Srivastava. "Emerging Aspects of Bioremediation of Arsenic". In Green Technologies and Environmental Sustainability, 395–407. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-50654-8_17.
Testo completoJones, Huw, Pornsawan Visoottiviseth, Md Khoda Bux, Rita Földényi, Nora Kováts, Gábor Borbély e Zoltán Galbács. "Case Reports: Arsenic Pollution in Thailand, Bangladesh, and Hungary". In Reviews of Environmental Contamination and Toxicology, 163–87. New York, NY: Springer New York, 2008. http://dx.doi.org/10.1007/978-0-387-79284-2_6.
Testo completoHossain, Khaled, M. M. Hasibuzzaman e Seiichiro Himeno. "Characteristics and Health Effects of Arsenic Exposure in Bangladesh". In Current Topics in Environmental Health and Preventive Medicine, 43–60. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2565-6_4.
Testo completoCaussy, Deoraj, e Nicholas D. Priest. "Introduction to Arsenic Contamination and Health Risk Assessment with Special Reference to Bangladesh". In Reviews of Environmental Contamination and Toxicology, 1–15. New York, NY: Springer New York, 2008. http://dx.doi.org/10.1007/978-0-387-79284-2_1.
Testo completoThurow, K., A. Koch, N. Stoll e C. A. Haney. "General Approaches to The Analysis of Arsenic Containing Warfare Agents". In Environmental Aspects of Converting CW Facilities to Peaceful Purposes, 123–38. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0508-1_12.
Testo completoSchneider, John F., Don Johnson, Norbert Stoll, Kirsten Thurow, Andreas Koch e Klaus Thurow. "Portable X-Ray Fluorescence Analysis of a CW Facility Site for Arsenic Containing Warfare Agents". In Environmental Aspects of Converting CW Facilities to Peaceful Purposes, 139–47. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0508-1_13.
Testo completoBencko, Vladimír. "Environmental & Human Health Aspects of Burning Arsenic Reach Coal Ecology Restoring Issues". In Implementing Ecological Integrity, 233–43. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-5876-3_15.
Testo completoHoque, B., S. Khanam, M. Siddik, S. Huque, A. Rahman e M. Zahid. "Technological, social and policy aspects in Bangladesh arsenic mitigation and water supply: Connections and disconnections". In Arsenic in the Environment - Proceedings, 570–71. CRC Press, 2016. http://dx.doi.org/10.1201/b20466-265.
Testo completoPlant, Jane A., e Barry Smith. "Environmental Geochemistry on a Global Scale". In Geology and Health. Oxford University Press, 2003. http://dx.doi.org/10.1093/oso/9780195162042.003.0028.
Testo completoRavenscroft, P. "Arsenic Pollution of Groundwater in Bangladesh". In Encyclopedia of Environmental Health, 169–80. Elsevier, 2011. http://dx.doi.org/10.1016/b978-0-444-63951-6.00347-8.
Testo completoAtti di convegni sul tema "Arsenic Environmental aspects Bangladesh"
Versteeg, Roelof, Lex van Geen, Mike Steckler, Martin Stute, Yan Zheng, Steve Goodbred, Gail Heath e Kazi Matin Ahmed. "3D Mapping of Geology and Arsenic Using Integrated Geophysical and Geochemical Studies in Bangladesh". In Symposium on the Application of Geophysics to Engineering and Environmental Problems 2003. Environment and Engineering Geophysical Society, 2003. http://dx.doi.org/10.4133/1.2923167.
Testo completoVersteeg, Roelof, Lex van Geen, Mike Steckler, Martin Stute, Yan Zheng, Steve Goodbred, Gail Heath e Kazi Matin Ahmed. "3D Mapping Of Geology And Arsenic Using Integrated Geophysical And Geochemical Studies In Bangladesh". In 16th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems. European Association of Geoscientists & Engineers, 2003. http://dx.doi.org/10.3997/2214-4609-pdb.190.con09.
Testo completoIslam, S. M. A., K. Fukushi e K. Yamamoto. "Contamination of agricultural soil by arsenic containing irrigation water in Bangladesh: overview of status and a proposal for novel biological remediation". In ENVIRONMENTAL TOXICOLOGY 2006. Southampton, UK: WIT Press, 2006. http://dx.doi.org/10.2495/etox060301.
Testo completoTarannum, T., N. Mirza e T. Ahmed. "Arsenic Removal Potential Using Naturally Occurring Iron in Groundwater: A Geo-Spatial Assessment of Household Potable Drinking Water in Bangladesh". In World Environmental and Water Resources Congress 2017. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480618.015.
Testo completoIslam, Md Zahidul, Walid-Bin-Habib e Md Sahil Hassan. "Environmental & health effects of nuclear radiation and various aspects of nuclear power plant in Bangladesh". In 2014 2nd International Conference on Green Energy and Technology (ICGET). IEEE, 2014. http://dx.doi.org/10.1109/icget.2014.6966664.
Testo completoCase, G. G., e R. L. Zelmer. "Comparative Experiences in Environmental Remediation of LLR Waste Sites in Diverse Canadian Environments". In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4846.
Testo completoPongpitukkul, Woraphat, Thotsaphon Chaianansutcharit, Suppakit Learduchasai, Thunyarak Suankaew e Satiraporn Sirisampan. "Tantawan Sludge Management: Holistic Approach Introducing New Practices". In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21331-ms.
Testo completo