## 3 Results and Discussions  
### XRF Soil Analysis  
Tables 4-6 and Figure 2 present the heavy metal concentrations from soils collected from 10 parks, from playground (PS) and from the edge of the park (ES), and the physical-chemical identified parameters. X-ray fluorescence (XRF) was the method with the aid of which a total number of 26 chemical elements were registered: Ag, Al, As, Ba, Ca, Cd, Cr, Co, Cu, Fe, Hg, K, Mg, Mn, Na, Ni, P, Pb, Rb, Sb, Sc, Sr, Ti, V, Zn and Zr. The wide variations between the obtained concentrations at different locations may indicate possible contamination from anthropogenic activities. To assess the level of contamination by various toxicants, the normal value established by [52] was used as the standard for the geochemical background. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Location/Parameter** & **pH (Units)** & **Conductivity** & **Resistivity** & **Salinity** & **Total** & **Oxidation** \\  & & **(\(\mu\)S/cm)** & **(M\(\Omega\)cm)** & **(PSU)** & **Dissolved** & **Reduction** \\  & & & & & & & \\ \hline \multirow{2}{*}{\(1\)} & PS & 6.96 & 1000 & 0.001 & 0.49 & 500 & 1.8 \\  & ES & 7.14 & 765 & 0.0013 & 0.37 & 383 & 7.1 \\ \hline \multirow{2}{*}{\(2\)} & PS & 7.37 & 870 & 0.0011 & 0.43 & 435 & 19.3 \\  & ES & 7.52 & 777 & 0.0013 & 0.38 & 389 & 18.9 \\ \hline \multirow{3}{*}{\(3\)} & PS & 7.24 & 444 & 0.0022 & 0.21 & 222 & 10.6 \\  & ES & 7.48 & 396 & 0.0025 & 0.19 & 198 & 8.4 \\ \hline \multirow{3}{*}{\(4\)} & PS & 7.14 & 492 & 0.002 & 0.24 & 246 & 6.3 \\  & ES & 7.21 & 1318 & 0.0008 & 0.65 & 659 & 9.2 \\ \hline \multirow{3}{*}{\(5\)} & PS & 7.61 & 1349 & 0.0007 & 0.67 & 675 & 9 \\  & ES & 7.54 & 941 & 0.0011 & 0.46 & 471 & 8.9 \\ \hline \multirow{3}{*}{\(6\)} & PS & 7.53 & 991 & 0.001 & 0.49 & 496 & 22.5 \\  & ES & 7.21 & 573 & 0.0017 & 0.28 & 287 & 2.4 \\ \hline \multirow{3}{*}{\(7\)} & PS & 7.33 & 260.5 & 0.0039 & 0.12 & 130.5 & 8 \\  & ES & 7.15 & 221.5 & 0.0046 & 0.11 & 110.5 & 9.05 \\ \hline \multirow{3}{*}{\(8\)} & PS & 6.49 & 725.33 & 0.0014 & 0.35 & 363 & 7.57 \\  & ES & 6.85 & 224.50 & 0.0045 & 0.11 & 112.50 & 6.15 \\ \hline \multirow{3}{*}{\(9\)} & PS & 7.27 & 181 & 0.0056 & 0.09 & 90.50 & 4.50 \\  & ES & 7.34 & 232.5 & 0.0043 & 0.11 & 116.5 & 9.05 \\ \hline \multirow{3}{*}{\(10\)} & PS & 6.67 & 501.5 & 0.002 & 0.24 & 250.5 & 8.05 \\  & ES & 7.22 & 234 & 0.0043 & 0.11 & 117 & 7.4 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Physical–chemical parameters determined for 10 parks from Galati city, Romania (PS—playground sample; ES—edge of park sample). \begin{table}
\begin{tabular}{c c c c c c c c c c c c c c c c c c c c c} \hline \hline \multicolumn{13}{c}{**Element Concentration (mg kg\({}^{-1}\))**} \\ \cline{2-13} \multicolumn{13}{c}{**Sire**} & **Rb** & **Cu** & **Pb** & **As** & **Co** & **Cr** & **Ni** & **Mn** & **Zn** & **Sc** & **Zr** & **Hg** & **V** & **Sb** & **Ba** & **Cd** & **Ag** \\ \hline  
& 4.5 & 3.1 & 71 & 25 & 775 & 139.4 & - & LOD & 361 & 1 & 89 & 0.54 & 402 & 0.1 & 3.4 \\ Mean & 94.05 & 745 & 745 & 80 & 36.4 & 56 & 251 & 94.5 & 645 & 737.5 & 705.2 & 132.2 & 877 & 305.7 & 18.4 & 50.1 & 413.6 & 0.14 & 3.88 \\ Minimum & 64.00 & 51.00 & 250 & 160.0 & 4.0 & 2.0 & 490.0 & 220.0 & 640.0 & 105.0 & 63.0 & 245.0 & 0.80 & 610.0 & 40.8 & 316.0 & 0.07 & 2.80 \\ Maximum & 133 & 530.00 & 850 & 1600.0 & 840 & 30 & 780 & 780.0 & 507.0 & 308.0 & 160.0 & 361.0 & 126.0 & 106.0 & 0.54 & 201.0 & 20.5 & 20.5 & 37.0 \\ SD & 23.06 & 91.85 & 248.6 & 11.9 & 0.53 & 8.23 & 101.4 & 501.1 & 62.1 & 23.6 & 27.11 & 0.10 & 105.9 & 0.02 & 62.7 & 0.05 & 0.19 \\ CV & 24.52 & 12.31 & 23.55 & 682.2 & 101.4 & 18.25 & 22.80 & 67.6 & 45.4 & 26.59 & - & 0.04 & 28.5 & 23.1 & 150.5 & 30.4 & 5.6 \\ NV & - & - & 20 & 20 & 5 & 15 & 30 & 20 & 900 & 100 & - & - & 0.1 & 50 & 5 & 200 & 1 & 2 \\ SMT & - & - & 100 & 50 & 50 & 50 & 75 & 1500 & 300 & - & - &Standard deviations (SDs), coefficients of variation (CVs), means, medians, maximum and minimum values were obtained using Microsoft Excel 2019.