Experimental research on water chemistry evolution in case of inadequate conservation protocols: application on surface and groundwater
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Date
2021-07-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Applied Water Science
Abstract
Abstract
The objective of this study conducted from October to December 2020 in the Natural Resources and Sensitive Environment
Development Laboratory was to demonstrate the importance of conservation protocols respect throw evolution of water
chemistry. Ninety-nine samples representing three water types (tap, spring and mineral water) were analyzed. Storage was at
laboratory temperature with no conservation protocol. Studied parameters (temperature, pH, CE, dissolved oxygen, oxydoreduction
potential,
total
dissolved
solids,
HCO
3
−
, Ca
2+
, Mg
2+
, SO
4
2−
and Cl
−
) were determined using standard methods.
The data registered from physico-chemical parameters were subjected to diferent analytical methods to assess the time
afect on their values compared with initial state. The results indicate that pH and alkalinity (exprimed in HCO
) are the
most vulnerable to evolution processes with highly signiicant time factor efect, while the concentrations of chlorides and
sulfates with conductivity levels are statistically less evolved. PCA analysis accounting 71.43% of the total variance examines
contribution of water type composition as a second variation factor. Projection through F1*F2 plan demonstrates clearly two
groups with surface waters (tap water) which are excessively mineralized and groundwaters (spring and bottled waters) in
which pH and magnesium parameters variations are the best illustrated.