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Title (Primary) Assessment of water quality in the Elbe River at low water conditions based on factor analysis
Author Baborowski, M.; Büttner, O.; Einax, J.W.;
Journal CLEAN-Soil Air Water
Year 2011
Department ASAM; FLOEK;
Volume 39
Issue 5
Language englisch;
Keywords Chemometrics; Elbe River; Heavy metals; Low discharge; Pollution transport
Abstract An assessment of water quality measurements during a long-lasting low water period in the Elbe River is presented. Weekly samples were taken from May to December 2003 at a sampling site in the middle part of the Elbe River. For multivariate data analysis, 34 parameters of 46 samplings were considered. As a result of this analysis, 78% of the variance of the data set is explained by five factors. They can be assigned to the following latent variables: season (37.5%)?>?tributaries (12.7%)?>?re-suspension (10.4%)?>?discharge (9.4%)?>?complexation (8.5%). For the investigated sampling site, two key processes were identified as dominating factors on the water quality during low water conditions. First, seasonal phytoplankton development caused changes in redox conditions with consequences for re-solution of pollutants from sediments. Second, tributaries have a higher impact on the main stream, due to changes in mixing processes. Therefore, in addition to flood investigations, monitoring strategies, and management plans should be developed in order to survey changes in water quality during low water conditions.
ID 10889
Persistent UFZ Identifier http://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=10889
Baborowski, M., Büttner, O., Einax, J.W. (2011):
Assessment of water quality in the Elbe River at low water conditions based on factor analysis
CLEAN-Soil Air Water 39 (5), 437 - 443