Assessment of Groundwater Quality by Chemometrics

Autor: Sotiria Kella, George Rigas, Xenofon Spiliotis, Panagiotis Plageras, Filotheos Lokkas, Agelos Papaioannou, Dimitra Dinouli, Argiris Papakonstantinou
Rok vydání: 2016
Předmět:
Zdroj: Water Environment Research. 88:631-643
ISSN: 1554-7531
1061-4303
DOI: 10.2175/106143016x14609975746523
Popis: Chemometric methods were used to analyze large data sets of groundwater quality from 18 wells supplying the central drinking water system of Larissa city (Greece) during the period 2001 to 2007 (8.064 observations) to determine temporal and spatial variations in groundwater quality and to identify pollution sources. Cluster analysis grouped each year into three temporal periods (January-April (first), May-August (second) and September-December (third). Furthermore, spatial cluster analysis was conducted for each period and for all samples, and grouped the 28 monitoring Units HJI (HJI=represent the observations of the monitoring site H, the J-year and the period I) into three groups (A, B and C). Discriminant Analysis used only 16 from the 24 parameters to correctly assign 97.3% of the cases. In addition, Factor Analysis identified 7, 9 and 8 latent factors for groups A, B and C, respectively.
Databáze: OpenAIRE