Temporal and seasonal variability of arsenic in drinking water wells in Matlab, southeastern Bangladesh: A preliminary evaluation on the basis of a 4 year study

• Published in: Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering Toxic/hazardous substances & environmental engineering, 2011-01, Vol.46 (11), p.1177-1184
• Main Authors: Bhattacharya, Prosun, Hossain, Mohammed, Rahman, Shamsun Naima, Robinson, Clare, Nath, Bibhash, Rahman, Marina, Islam, M. Mainul, Von Brömssen, Mattias, Ahmed, Kazi Matin, Jacks, Gunnar, Chowdhury, Dulaly, Rahman, Mahfuzar, Jakariya, Mohammed, Persson, Lars Åke, Vahter, Marie
• Format: Article
• Language: English
• Subjects: Arsenic; Arsenic - analysis; Bangladesh; Drinking water; Drinking Water - analysis; Environmental Monitoring - methods; Groundwater; Groundwater - analysis; groundwater flow; Groundwater pollution; Health; Health risk assessment; human health; Matlab; Monitoring; risk; seasonal variation; Seasons; Sustainability; Temporal logic; temporal variation; Water Pollutants, Chemical - analysis; water supply; Water Wells - analysis; Wells
• ISSN: 1532-4117; 1093-4529; 1532-4117
• DOI: 10.1080/10934529.2011.598768

Temporal and seasonal variability of As concentrations in groundwater were evaluated in As-affected areas of Matlab, southeastern Bangladesh. Groundwater samples from 61 randomly selected tubewells were analyzed for As concentrations over a period of three years and four months (from July 2002 to November 2005) and monitored seasonally (three times a year). The mean As concentrations in the sampled tubewells decreased from 153 to 123 μg/L during July 2002 to November 2005. Such changes were pronounced in tubewells with As concentration >50 μg/L than those with As concentrations