A combined chemico-mineralogical and tensiometric approach for evaluation of Euganean Thermal Mud (ETM) quality

The tensiometric versus skin approach (TVS modelling) is a non-invasive method based on the permutability principle of tensiometry. TVS modelling is a technologic model that can evaluate the reproducibility of the matrix of thermal mud, its degree of maturation, and consequently its skin affinity, in a non-destructive way. This is an essential pre-condition for defining objective scientific protocols. The surface energy profile of the matrixes is performed by a Tenskinmeter, a tensiometer modified by us for tensiometric measurements on skin. The development of a chemico-mineralogical index (Ichmi) based on X-ray fluorescence analysis allows the typical chemico-mineralogical constituents of thermal muds to be determined. The combined TVS-Ichmi approach developed here demonstrates the interconnections between the typical chemico-mineralogical components of a Euganean thermal mud and its energy surface properties. The combined approach also demonstrates the interconnections at the interface between Ichmi and the skin affinity of the mud matrix, revealing its typical functional and therapeutic effects.