Fig. 1
Principal Components Analysis (PCA) biplot representing the typifying chemical composition of thermal waters and groundwater. The vector length is proportional to the correlation between the corresponding parameter and the PCA axis 1 and 2. Bar plot shows the contribution of each variable (vector projection values) expressed as the correlation with the x-axis. The genera significantly correlated with x-axis were the main ones responsible for the obtained clusterization. 1, U; 2, V; 3, NO3; 4, Cu; 5, Zn; 6, Cr; 7, Pb; 8, Ni; 9, Al; 10, Se; 11, Cl; 12, Li; 13, Sb; 14, Ba; 15, Be; 16, Fe; 17, K; 18, Mn; 19, F; 20, B; 21, Cs; 22, As(III); 23, Ca; 24, AsTot; 25, Mg; 26, Sr; 27, Na; 28, SO4.
