HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
工学研究科  >
雑誌発表論文等  >

Arsenic contamination of groundwater in Nawabganj, Bangladesh, focusing on the relationship with other metals and ions.

フルテキスト
WST2005-52-8.pdf363.86 kBPDF見る/開く
この文献へのリンクには次のURLを使用してください:http://hdl.handle.net/2115/14657

タイトル: Arsenic contamination of groundwater in Nawabganj, Bangladesh, focusing on the relationship with other metals and ions.
著者: Ohno, K. 著作を一覧する
Furukawa, A. 著作を一覧する
Hayashi, K. 著作を一覧する
Kamei, T. 著作を一覧する
Magara, Y. 著作を一覧する
キーワード: Arsenic
Bangladesh
groundwater contamination
iron
manganese
sulfate
発行日: 2005年
出版者: IWA Publishing
誌名: Science and Technology
巻: 52
号: 8
開始ページ: 87
終了ページ: 94
抄録: Serious arsenic contamination of groundwater in Bangladesh has been frequently reported and is of great concern. In this research, repeated water sampling from the same 10 tubewells in Nawabganj municipality, Bangladesh, was conducted and analysed, focusing on the seasonal variation of water quality and the relationship among arsenic and other metals and ions. For the seasonal variation of water quality, arsenic and iron concentrations were higher in the rainy season in general although the tendency was not consistent and it depended on the tubewell and the time. Correlation between arsenic and iron could not be observed in this study (r = −0.01) when using all cases. This was because no correlation was observed in the higher arsenic concentration range. Arsenic removal by co-precipitation with coexisting iron is known as one of the locally applicable techniques in Bangladesh, but the result from this study suggests that some additional treatments such as the extra injection of iron should be performed in some cases, especially where the arsenic concentration is high. The correlation between arsenic and other substances was also analysed. As a result, manganese (r = 0.37), molybdenum (r = 0.33) and sulfate ion (r = −0.33) significantly correlated with arsenic (p<0.05). The negative correlation between arsenic and sulfate ion implies the dissolution of arsenic into groundwater under reductive conditions although there are some exceptional cases.
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/14657
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 大野 浩一

 

本サイトに関するご意見・お問い合わせは repo at lib.hokudai.ac.jp へお願いします。 - 北海道大学