Arsenic occurrence in groundwater of Kathmandu Valley, Nepal
This study was carried out to assess arsenic occurrence in groundwater of Kathmandu Valley, Nepal, with focus on spatial and seasonal variation, total and dissolved arsenic concentration and the arsenic release process. Several deep and shallow groundwater samples from northern and central groundwat...
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| Veröffentlicht in: | Desalination and water treatment 2009-04, Vol.4 (1-3), p.248-254 |
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| container_title | Desalination and water treatment |
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| creator | Chapagain, S.K. Shrestha, S. Nakamura, T. Pandey, V.P. Kazama, F. |
| description | This study was carried out to assess arsenic occurrence in groundwater of Kathmandu Valley, Nepal, with focus on spatial and seasonal variation, total and dissolved arsenic concentration and the arsenic release process. Several deep and shallow groundwater samples from northern and central groundwater districts were collected during the pre-monsoon and monsoon seasons, and analyzed for major physicochemical parameters. The arsenic concentration was |
| doi_str_mv | 10.5004/dwt.2009.492 |
| format | Article |
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Several deep and shallow groundwater samples from northern and central groundwater districts were collected during the pre-monsoon and monsoon seasons, and analyzed for major physicochemical parameters. The arsenic concentration was <10 µg/L (i.e. WHO standard) in shallow groundwater, whereas in deep groundwater, 52% of samples exceeded the WHO standard. The arsenic varies spatially with higher concentration towards the central groundwater district whereas seasonal variation is insignificant. Arsenic is mainly released into the groundwater from the natural source under the reductive process. The central groundwater has a higher reducing condition than the northern groundwater districts. The concentrations of total and dissolved arsenic are not significantly different.</description><identifier>ISSN: 1944-3986</identifier><identifier>ISSN: 1944-3994</identifier><identifier>EISSN: 1944-3986</identifier><identifier>DOI: 10.5004/dwt.2009.492</identifier><language>eng</language><publisher>L'Aquila: Elsevier Inc</publisher><subject>Applied sciences ; Arsenic ; Drinking water and swimming-pool water. Desalination ; Exact sciences and technology ; Groundwater ; Kathmandu Valley ; Pollution ; Water treatment and pollution</subject><ispartof>Desalination and water treatment, 2009-04, Vol.4 (1-3), p.248-254</ispartof><rights>2009 Elsevier Inc.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c378t-704cba72fb11ce1b988badf3474d93e47872a7252e71f14fa84d37ae7df24ad13</citedby><cites>FETCH-LOGICAL-c378t-704cba72fb11ce1b988badf3474d93e47872a7252e71f14fa84d37ae7df24ad13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>309,310,314,780,784,789,790,23930,23931,25140,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=22273149$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Chapagain, S.K.</creatorcontrib><creatorcontrib>Shrestha, S.</creatorcontrib><creatorcontrib>Nakamura, T.</creatorcontrib><creatorcontrib>Pandey, V.P.</creatorcontrib><creatorcontrib>Kazama, F.</creatorcontrib><title>Arsenic occurrence in groundwater of Kathmandu Valley, Nepal</title><title>Desalination and water treatment</title><description>This study was carried out to assess arsenic occurrence in groundwater of Kathmandu Valley, Nepal, with focus on spatial and seasonal variation, total and dissolved arsenic concentration and the arsenic release process. Several deep and shallow groundwater samples from northern and central groundwater districts were collected during the pre-monsoon and monsoon seasons, and analyzed for major physicochemical parameters. The arsenic concentration was <10 µg/L (i.e. WHO standard) in shallow groundwater, whereas in deep groundwater, 52% of samples exceeded the WHO standard. The arsenic varies spatially with higher concentration towards the central groundwater district whereas seasonal variation is insignificant. Arsenic is mainly released into the groundwater from the natural source under the reductive process. The central groundwater has a higher reducing condition than the northern groundwater districts. The concentrations of total and dissolved arsenic are not significantly different.</description><subject>Applied sciences</subject><subject>Arsenic</subject><subject>Drinking water and swimming-pool water. Desalination</subject><subject>Exact sciences and technology</subject><subject>Groundwater</subject><subject>Kathmandu Valley</subject><subject>Pollution</subject><subject>Water treatment and pollution</subject><issn>1944-3986</issn><issn>1944-3994</issn><issn>1944-3986</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNptkEtLAzEQgIMoWGpv_oBcvHVrXttswEspvlD0ol7DbDLRyHa3JFtL_71bKuLBXCYw3zy-IeScs1nJmLr0234mGDMzZcQRGXGjVCFNNT_-8z8lk5w_2fBKpUslRuRqkTK20dHOuU1K2DqksaXvqdu0fgs9JtoF-gD9xwpav6Fv0DS4m9InXENzRk4CNBknP3FMXm-uX5Z3xePz7f1y8Vg4qau-0Ey5GrQINecOeW2qqgYfpNLKG4lKV1oM6VKg5oGrAJXyUgNqH4QCz-WYTA99XepyThjsOsUVpJ3lzO7l7SBv9_J2kB_wiwO-huygCQlaF_NvjRBCS67MwM0PHA67f0VMNru4v4CPCV1vfRf_H_ANyRdsPA</recordid><startdate>20090401</startdate><enddate>20090401</enddate><creator>Chapagain, S.K.</creator><creator>Shrestha, S.</creator><creator>Nakamura, T.</creator><creator>Pandey, V.P.</creator><creator>Kazama, F.</creator><general>Elsevier Inc</general><general>Desalination Publications</general><scope>6I.</scope><scope>AAFTH</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20090401</creationdate><title>Arsenic occurrence in groundwater of Kathmandu Valley, Nepal</title><author>Chapagain, S.K. ; Shrestha, S. ; Nakamura, T. ; Pandey, V.P. ; Kazama, F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c378t-704cba72fb11ce1b988badf3474d93e47872a7252e71f14fa84d37ae7df24ad13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Applied sciences</topic><topic>Arsenic</topic><topic>Drinking water and swimming-pool water. Desalination</topic><topic>Exact sciences and technology</topic><topic>Groundwater</topic><topic>Kathmandu Valley</topic><topic>Pollution</topic><topic>Water treatment and pollution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chapagain, S.K.</creatorcontrib><creatorcontrib>Shrestha, S.</creatorcontrib><creatorcontrib>Nakamura, T.</creatorcontrib><creatorcontrib>Pandey, V.P.</creatorcontrib><creatorcontrib>Kazama, F.</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Desalination and water treatment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chapagain, S.K.</au><au>Shrestha, S.</au><au>Nakamura, T.</au><au>Pandey, V.P.</au><au>Kazama, F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Arsenic occurrence in groundwater of Kathmandu Valley, Nepal</atitle><jtitle>Desalination and water treatment</jtitle><date>2009-04-01</date><risdate>2009</risdate><volume>4</volume><issue>1-3</issue><spage>248</spage><epage>254</epage><pages>248-254</pages><issn>1944-3986</issn><issn>1944-3994</issn><eissn>1944-3986</eissn><abstract>This study was carried out to assess arsenic occurrence in groundwater of Kathmandu Valley, Nepal, with focus on spatial and seasonal variation, total and dissolved arsenic concentration and the arsenic release process. Several deep and shallow groundwater samples from northern and central groundwater districts were collected during the pre-monsoon and monsoon seasons, and analyzed for major physicochemical parameters. The arsenic concentration was <10 µg/L (i.e. WHO standard) in shallow groundwater, whereas in deep groundwater, 52% of samples exceeded the WHO standard. The arsenic varies spatially with higher concentration towards the central groundwater district whereas seasonal variation is insignificant. Arsenic is mainly released into the groundwater from the natural source under the reductive process. The central groundwater has a higher reducing condition than the northern groundwater districts. The concentrations of total and dissolved arsenic are not significantly different.</abstract><cop>L'Aquila</cop><pub>Elsevier Inc</pub><doi>10.5004/dwt.2009.492</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Desalination and water treatment, 2009-04, Vol.4 (1-3), p.248-254 |
| issn | 1944-3986 1944-3994 1944-3986 |
| language | eng |
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| source | Alma/SFX Local Collection |
| subjects | Applied sciences Arsenic Drinking water and swimming-pool water. Desalination Exact sciences and technology Groundwater Kathmandu Valley Pollution Water treatment and pollution |
| title | Arsenic occurrence in groundwater of Kathmandu Valley, Nepal |
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