For elucidating the mechanism of arsenic contamination of groundwater in Asia with special reference of research in Bangladesh. Arsenic contamination in groundwater and hydrogeological background in Samta village, western Bangladesh.
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Accession number;00A0386823
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| Title;For elucidating the mechanism of arsenic contamination of groundwater in Asia with special reference of research in Bangladesh. Arsenic contamination in groundwater and hydrogeological background in Samta village, western Bangladesh. |
| Author;
BANDO KAZURO
(Kowa Co., Ltd.)
HOSODA KAZUAKI
(Nippon Koei Co., Ltd.)
KOBAYASHI SHIGERU
(Meiji Consult. Co., Ltd.)
KUDO SHUICHI
(Kudochishitsuken)
KUBOTA YOSHIHIRO
(Niigata Univ., Fac. of Sci.)
SHIBAZAKI NAOAKI
(Kokusai Kogyo Co., Ltd.)
SUENAGA KAZUYUKI
(Chikyu Kagaku Kenkyu Senta)
TANABE KIMIKO
(Miyazaki Univ.)
YOKOTA BAKU
(Miyazaki Univ., Fac. of Eng.)
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Journal Title;Earth Science
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Journal Code:F0193A
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ISSN:0366-6611
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VOL.54;NO.2;PAGE.105-126(2000)
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| Figure&Table&Reference;FIG.17, TBL.3, REF.33 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;The groundwater contamination by arsenic has become a serious problem for human health in Bangladesh and West Bengal State of India. Since 1996, the Asia Arsenic Network (AAN) and the Research Group for Applied Geology (RGAG) have started their activities to tackle the arsenic problem in Bangladesh. The AAN and RGAG selected Samta village in Jessore district, western Bangladesh as a pilot village for their activities. The RGAG has carried out hydrogeological investigations including core sample analysis and groundwater monitoring at constructed observation wells since 1998 to reveal the source and the mechanism of the arsenic contamination. The AAN and the research group of Miyazaki University measured concentration of arsenic and groundwater quality at the observation wells and selected private wells. It is known by the AAN that the concentration of As is higher than the Bangladesh drinking water standard (=0.05 mg/l) in the southern part of the village, whereas the As concentration is lower than the standard in the northeastern part. Samta village is bounded on the east by the Betna river, that flows from north to south with bending toward west. The geomorphology of Samta village, which is situated on the Ganges delta and has elevation between about 5 to 7m, is subdivided into natural levee, gentle slope and back swamp. The continuous core drilling was performed up to a depth of 64m at the central part of the village to investigate subsurface hydrogeologic conditions. A total of 23 observation wells were drilled with collecting core samples in Samta village and Deuli village, which is located east of Samta village. Soil auger survey and interpretation of existing deep tube wells' data were also carried out.... (author abst.) |
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