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EnglishA set of quantitative analytical data for 13 rivers belonging to the basin of the Tanaro (Piedmont region, north-western Italy) has been processed by multivariate statistical techniques. The original matrix, which refers to the year 1990, consisted of 20 chemical and physico-chemical variables, determined at 44 sampling sites. The following methods have been used for the treatment of the data: cluster analysis (unsupervised pattern recognition), factor analysis, variable selection by Fisher weights. A comparison has also been made between the data referring to 1990 and to 1978 in order to investigate the evolution of the environmental situation for the Tanaro basin after such a lapse of time. This comparison has been carried out by processing the 3-D matrix which collects the data of the two different periods.
| Titolo: | POLLUTION OF A RIVER BASIN AND ITS EVOLUTION WITH TIME STUDIED BY MULTIVARIATE STATISTICAL-ANALYSIS |
| Autori Riconosciuti: | |
| Autori: | Aruga R.; Gastaldi D.; Negro G.; Ostacoli G. |
| Data di pubblicazione: | 1995 |
| Abstract: | A set of quantitative analytical data for 13 rivers belonging to the basin of the Tanaro (Piedmont region, north-western Italy) has been processed by multivariate statistical techniques. The original matrix, which refers to the year 1990, consisted of 20 chemical and physico-chemical variables, determined at 44 sampling sites. The following methods have been used for the treatment of the data: cluster analysis (unsupervised pattern recognition), factor analysis, variable selection by Fisher weights. A comparison has also been made between the data referring to 1990 and to 1978 in order to investigate the evolution of the environmental situation for the Tanaro basin after such a lapse of time. This comparison has been carried out by processing the 3-D matrix which collects the data of the two different periods. |
| Volume: | 310 |
| Pagina iniziale: | 15 |
| Pagina finale: | 25 |
| Parole Chiave: | CHEMOMETRICS; CLUSTERING; FACTOR ANALYSIS; MULTIVARIATE ANALYSIS; POLLUTION; RIVER POLLUTION |
| Rivista: | ANALYTICA CHIMICA ACTA |
| Appare nelle tipologie: | 03A-Articolo su Rivista |
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