naa a22 4500 510755224 CHVBK 20180411083120.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s12594-013-0048-0 doi (NATIONALLICENCE)springer-10.1007/s12594-013-0048-0 Factor and cluster analysis of water quality data of the groundwater wells of Kushtia, Bangladesh: Implication for arsenic enrichment and mobilization [Elektronische Daten] [Md. Hossain, A. Selim Reza, Mst. Lutfun-Nessa, Syed Ahmed] The study area is located in the southwestern part of Bangladesh. Twenty-six groundwater samples were collected from both shallow and deep tube wells ranging in depth from 20 to 60 m. Multivariate statistical analyses including factor analysis, cluster analysis and multidimensional scaling were applied to the hydrogeochemical data. The results show that a few factors adequately represent the traits that define water chemistry. The first factor of Fe and HCO3 is strongly influenced by bacterial Fe (III) reduction which would raise both Fe and HCO3 concentrations in water. Na, Cl, Ca, Mg and PO4 are grouped under the second factor representing the salinity sources of waters. The third factor, represented by As, Mn, SO4 and K is related to As mobilization processes. Cluster analysis has been applied for the interpretation of the groundwater quality data. Initially Piper methods have been employed to obtain a first idea on the water types in the study area. Hierarchical cluster analysis was carried out for further classification of water types in the study area. Twelve components, namely, pH, Fe, Mn, As, Ca, Mg, Na, K, HCO3, Cl, SO4 and NO3 have been used for this purpose. With hierarchical clustering analysis the water samples have been classified into 3 clusters. They are very high, high and moderately As-enriched groundwater as well as groundwater with elevated SO4. Geological Society of India, 2013 Piper nationallicence Hierarchical Cluster analysis nationallicence Groundwater nationallicence Arsenic nationallicence Bangladesh nationallicence Hossain Md Department of Geology and Mining, University of Rajshahi, 6205, Rajshahi, Bangladesh aut Selim Reza A. Department of Geology and Mining, University of Rajshahi, 6205, Rajshahi, Bangladesh aut Lutfun-Nessa Mst Department of Geology and Mining, University of Rajshahi, 6205, Rajshahi, Bangladesh aut Ahmed Syed Department of Geology and Mining, University of Rajshahi, 6205, Rajshahi, Bangladesh aut Journal of the Geological Society of India Springer-Verlag 81/3(2013-03-01), 377-384 0016-7622 81:3<377 2013 81 12594 https://doi.org/10.1007/s12594-013-0048-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12594-013-0048-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hossain Md Department of Geology and Mining, University of Rajshahi, 6205, Rajshahi, Bangladesh aut NATIONALLICENCE 700 1- Selim Reza A. Department of Geology and Mining, University of Rajshahi, 6205, Rajshahi, Bangladesh aut NATIONALLICENCE 700 1- Lutfun-Nessa Mst Department of Geology and Mining, University of Rajshahi, 6205, Rajshahi, Bangladesh aut NATIONALLICENCE 700 1- Ahmed Syed Department of Geology and Mining, University of Rajshahi, 6205, Rajshahi, Bangladesh aut NATIONALLICENCE 773 0- Journal of the Geological Society of India Springer-Verlag 81/3(2013-03-01), 377-384 0016-7622 81:3<377 2013 81 12594 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer