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Characterization of spatial patterns in river water quality using chemometric pattern recognition techniques.

Marine pollution bulletin

10.1016/j.marpolbul.2012.01.032

22330076

analysis, Water Quality, methods, Malaysia, Rivers, Water Pollutants, Chemical, Data Mining, Environmental Monitoring

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      Abstract

      This study employed three chemometric data mining techniques (factor analysis (FA), cluster analysis (CA), and discriminant analysis (DA)) to identify the latent structure of a water quality (WQ) dataset pertaining to Kinta River (Malaysia) and to classify eight WQ monitoring stations along the river into groups of similar WQ characteristics. FA identified the WQ parameters responsible for variations in Kinta River's WQ and accentuated the roles of weathering and surface runoff in determining the river's WQ. CA grouped the monitoring locations into a cluster of low levels of water pollution (the two uppermost monitoring stations) and another of relatively high levels of river pollution (the mid-, and down-stream stations). DA confirmed these clusters and produced a discriminant function which can predict the cluster membership of new and/or unknown samples. These chemometric techniques highlight the potential for reasonably reducing the number of WQVs and monitoring stations for long-term monitoring purposes. Copyright © 2012 Elsevier Ltd. All rights reserved.

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