Abstract
The study of the correlation matrix between ion concentration and the principal component analysis on the related variance matrix are widely used to explore the presence of contamination patterns in rainwater. The paper shows that the covariance between ion concentrations is a perturbed measure, and that the total conductivity can be interpreted as the perturbation factor. Then, the paper describes some strategies for measuring and removing the perturbation and how, by removing this effect, correct contamination patterns can be identified. A summary of the results of an application on data measured by the monitoring network of the Veneto region is proposed.
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© 2001 Springer-Verlag Berlin Heidelberg
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Mantovan, P., Pastore, A. (2001). Perturbation Models for Principal Component Analysis of Rainwater Pollution Data. In: Borra, S., Rocci, R., Vichi, M., Schader, M. (eds) Advances in Classification and Data Analysis. Studies in Classification, Data Analysis, and Knowledge Organization. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-59471-7_19
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DOI: https://doi.org/10.1007/978-3-642-59471-7_19
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-41488-9
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