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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Geographical discrimination of mineral waters from São Paulo state through exploratory analysis

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Author(s):
Fernando Vitorino Silva ; Marcos Yassuo Kamogawa ; Márcia Miguel Castro Ferreira [3] ; Joaquim Araújo Nóbrega [4] ; Ana Rita Araujo Nogueira [5]
Total Authors: 5
Document type: Journal article
Source: Eclética Química; v. 27, p. 91-102, 2002-00-00.
Abstract

The correlation and grouping of mineral waters from different regions of São Paulo state was carried out using exploratory analysis of pH values and Ba, Ca, K, Mg, Na and V contents. By using principal components analysis (PCA) and hierarchical cluster analysis (HCA) was possible to evaluate the similarity of mineral water samples through group formation that was directly correlated with their sources. Employing scores, loadings and dendogram graphics was possible to observe the formation of two groups and the separation of Ibirá and Itú mineral water samples. The first group is composed by samples from Serra da Mantiqueira region (Águas da Prata, Campos do Jordão and Lindóia) and the other one is formed by samples from cities located above the Guarani Aquifer (Águas de Santa Bárbara, Palmares Paulista, Presidente Prudente, São Carlos, São Simão e Santa Rosa do Viterbo). The segregation of Ibirá samples was due to predominant presence of Na and V in their mineral composition, while for Itú samples it was observed higher contribution of Ba, Ca and Mg elements. The application of exploratory analysis enabled to correlate the chemical composition with the geographical source of the mineral water samples producing useful results for establishing of classification and prevision models. (AU)

FAPESP's process: 98/10814-3 - Preparation of agronomic samples and multi-elementary determination by induced plasma atomic emission spectrometry
Grantee:Joaquim de Araújo Nóbrega
Support Opportunities: Research Projects - Thematic Grants