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Zen Alabden Chalawi
Shogah, Vasily G. Amelin, Roman V. Repkin
Identification
of natural mineral waters vladimir region by colorimtry of indicator papers
using a smartphone
Abstract
A test device based on cellulose paper for
identification and classification of natural mineral waters of the Vladimir
region is proposed, containing indicator zones for determining the total
hardness, alkalinity and pH of water, as well as the concentrations of
chlorides and sulfates. The colorimetric parameters of the indicator zones of
the test device after contact with the test water
were determined using a smartphone.
The values of the colorimetric parameters of each indicator zone
in the RGB system were used as the analytical signal. The data set was
processed by principal component analysis (PCA) and hierarchical clustering analysis
(HCA). Identification and classification of 13 natural mineral waters of the
Vladimir region (7 of them carbonated) were carried out.
Key words: natural mineral
waters, identification, digital colorimetry, smartphone, indicator paper
Copyright (C) Chemistry Dept., Moscow State University, 2002
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