Experimental research on water chemistry evolution in case of inadequate conservation protocols: application on surface and groundwater

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