title: A chemometric approach to the investigation of major and minor ion chemistry in Lake Como (Lombardia, Northern Italy.
abstract: A chemometric approach based on Principal Component Analysis (PCA) has been proposed, in order to study chemical features (major and minor ions, total alkalinity, dissolved silica) of surface and deep waters of Lake Como (Northern Italy). The method allowed us to investigate the correlations between the analyzed ions in an easy-to-see way, using bi-dimensional graphs. In wintertime, the ionic composition of Lake Como waters seems to be mainly related to the geological composition of the lake basin, with a crystalline bedrock on the northern side and a sedimentary cover in the southern part. The presence of contaminants such as bromide and nitrite in water columns is also evidenced and discussed.
authors.affiliation: Dipartimento di Scienze Chimiche e Ambientali, University of Insubria in Como, Via Valleggio 11, 22100 Como, Italy. barbara.giussani@uninsubria.it
authors.forename: Barbara
authors.initials: B
authors.lastname: Giussani
authors.forename: Carlo
authors.initials: C
authors.lastname: Dossi
authors.forename: Damiano
authors.initials: D
authors.lastname: Monticelli
authors.forename: Andrea
authors.initials: A
authors.lastname: Pozzi
authors.forename: Sandro
authors.initials: S
authors.lastname: Recchia
mesh_terms: D000818:Animals; D001965:Bromides / Q000032:analysis; D004784:Environmental Monitoring; D005618:Fresh Water / Q000032:analysis* / Q000737:chemistry; D019015:Geologic Sediments / Q000032:analysis* / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007558:Italy; D009573:Nitrites / Q000032:analysis; D025341:Principal Component Analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D001965:Bromides; D009573:Nitrites; D014874:Water Pollutants, Chemical