COLUMBIA UNIVERSITY - 2016 - Présentation en lgien : Impact of soil arsenic on rice yields in Bangladesh. Geochem Trans. 2016 Jul 11;17:4. Sources of salinity and arsenic in groundwater in southwest Bangladesh. Source of salts Salinity of groundwater from tubewells on and near Polder 32 is spatially variable (Fig. 1).
The average salinity of groundwater in the area of Polder 32 is ~10 ppt, roughly 1/3 that of seawater and similar to the salinity of tidal channel water in the dry season. We suggest that groundwater in this region is saline because it comprises connate tidal-channel water deposited with the sediments during Holocene aquifer development, similar to what is observed today. The concentrations of components of soluble salts such as the alkali element Na, alkaline earths Mg and Sr and halogen Cl are all highly correlated, indicating that they behave conservatively.
Groundwater samples define linear arrays on bivariate plots of these elements that most likely represent mixing between saline and dilute endmembers (Fig. 5). tgw=ln(XCWe−λtCw+(1−XCW))−λ CgwCl= XswCswCl+(1−Xsw)CrwCl Source of As and cause of As mobility CH2O + 4FeOOH−(H2AsO4)x+(7+ 3x)H+= 4Fe2++ HCO−3+(6+ x)H2O + xH3AsO3.
Geochem Trans. 2016; 17: 4. Sources of salinity and arsenic in groundwater in southwest Bangladesh. Lancet. 2016 Nov 12;388(10058):2336-2337. In Bangladesh, arsenic poisoning is a neglected issue. Trials. 2016 Apr 27;17(1):218. A high-selenium lentil dietary intervention in Bangladesh to counteract arsenic toxicity: study protocol for a randomized controlled trial. FOGARTY INTERNATIONAL CENTER - APRIL 2016 - School program in rural Bangladesh reduces arsenic exposure, study shows. Photo by Dr.
Khalid Khan Teaching elementary schoolers to drink from safe water wells becomes a lesson the whole family learns, according to an NIH-funded study. By Shana Potash A mother in rural Bangladesh goes about her task of collecting household water from a well outside her home. She may not know the water contains high levels of arsenic, or that using a different well could be lifesaving. Arsenic is naturally occurring and can leach into groundwater from rocks and soil. Installing new, safe wells in a community doesn't necessarily mean people will use them, researchers say. Investigator Dr. "The idea was the children would get information in the earliest stages of their life," Khan explains, "It could basically save them for their entire life, and their families also could benefit.
" Fourteen schools and roughly 800 children, ages 8 to 11, participated in the study. The findings come as investigators are learning more about arsenic's effect on children. JOURNAL OF WATER SCIENCE - 2012 - Arsenic mitigation measures in Bangladesh. EXPO ZARAGOZA - 2008 - Drinking water crisis due to arsenic contam ination in Bangladesh: public health consequences, mitigation strategies and sustainability. BFMTV 07/04/16 Bangladesh: 20 millions de personnes empoisonnées par l'arsenic contenu dans l'eau. LE FIGARO 07/04/16 Des millions de Bangladais empoisonnés à l'arsenic. Une grande partie des puits auxquels s'abreuvent les Bangladais sont contaminés par l'arsenic.
Une pollution découverte dès 1993, mais peu de choses ont changé depuis, selon Human Rights Watch. L'association estime à 43.000 le nombre annuel de décès dus à cette pollution. Un rapport de Human Rights Watch publié mercredi 6 avril 2016 met en lumière la contamination à l'arsenic d'une grande partie de la population du Bengladesh. Ce fléau provoquerait 43.000 décès par an. 20 millions de Bangladais seraient ainsi contaminés par la consommation de l'eau de leurs puits. L'arsenic provoque diabète, cancers de la peau, des poumons, du foie, de la vessie ou du pancréas, des maladies pulmonaires, cardiovasculaires et pulmonaires.
Les normes internationales de concentration d'arsenic dans l'eau recommandent de ne pas dépasser 10 milligrammes par litre d'eau. 125.000 puits analysés L'arsenic est un métal présent à l'état naturel dans l'Himalaya. Environment International Volume 86, January 2016, Elevated childhood exposure to arsenic despite reduced drinking water concentrations — A longitudinal cohort study in rural Bangladesh.
Open Access Highlights Massive mitigation efforts have lowered water arsenic in rural Bangladesh.
Efficient arsenic-mitigation via deeper wells, containing much more manganese Urinary arsenic concentrations still remains elevated in children. Rice was found to be an important additional source of arsenic. Abstract Objectives. Journal of Health Population and Nutrition, Vol. 28, No. 6, December, 2010, pp. 578-584 Arsenic and Cadmium in Food-chain in Ban. UNIVERSITY OF HELSINKI - 1999 - Causes and effects of arsenic contamination in drinking water in Bangladesh: a critical review.
Int. J. Environ. Res. Public Health 2013, 10, 18-46; Arsenic Contaminated Groundwater and Its Treatment Options in Bangladesh. Int. J. Environ. Res. Public Health 2005, 2(2), 204–213 Assessment of Arsenic Contamination of Groundwater and Health Problems i. Water 2011, 3, 1050-1076 Arsenic Contamination in Groundwater of Bangladesh: Perspectives on Geochemical, Microbial and Anthropo. EMERGING HEALTH THREATS JOURNAL - 2012 - Bangladesh arsenic mitigation programs: lessons from the past.
Abul Hasnat Milton1, Samar Kumar Hore2, Mohammad Zahid Hossain2 and Mahfuzar Rahman2,3* 1Centre of Clinical Epidemiology and Biostatistics, School of Medicine and Public Health, University of Newcastle, NSW, Australia; 2International Centre for Diarrhoeal Disease Research Bangladesh, Dhaka, Bangladesh; 3Mailman School of Public Health, Columbia University, NY, USA Abstract Ensuring access to safe drinking water by 2015 is a global commitment by the Millennium Development Goals (MDGs).
International Journal of Environmental Research and Public Health 2009, 6(3), 1010-1025 Well Water Arsenic Exposure, Arsenic Ind. Remediation of Arsenic for agriculture sustainability, food security and health in Bangladesh. Bangladesh Agricultural Research Institute - 1998 - A Study of Arsenic Contaminated Irrigation Water and its Carried Over Effect.