An Influence of Research Methodology on the Results of Determination of a Chemical Composition of Curative Water

A credible analysis of a chemical composition of groundwater, especially specific components determining its curative character is extraordinarily difficult. The key element is a choice of a laboratory where chemical analyses will be performed and hence proper analytical techniques. A curative water is often characterized by high mineralization. The researches of a saline water and the brines conducted over the years indicate that the concentration of the specific components determined by classical and instrumental methods may differ significantly. On a basis of the results presented in this work, it can be stated that every analytical method applied by laboratories fulfilled the requirements concerning the analysis of a curative water. Observed differences between subsequent measurements arise mainly from a natural variability of the physicochemical parameters of investigated water. During analysis of the stability of the chemical composition of the curative water, changes in laboratory and analytical techniques have to be taken into account.