## 3 Results and Discussions
### XRF Soil Analysis
It can be found in the composition of different alloys, bricks, glass, ceramic pigments and detergents, as well as in additive-enriched gasoline, fungicide and insecticides [21; 27; 29]. Nickel (Ni) presented a minimum value of 23 mg kg\({}^{-1}\) and a maximum of 51 mg kg\({}^{-1}\) for the PSs and a minimum of 22 mg kg\({}^{-1}\) and maximum of 57 mg kg\({}^{-1}\) for the ESs. These values are over the NV (20 mg kg\({}^{-1}\)) but they do not reach the SAT (75 mg kg\({}^{-1}\)) [52] (Figure 12, Appendix A). Ni was found for locations 1 (with the maximum value of the PSs) and 6 (with the maximum value of the ESs). The average values ranged between 35.5 and 40.3 mg kg\({}^{-1}\) for the PS and ES, and are comparable to the values obtained in other studies from Galati [33; 34], but lower than those reported by [55] in the urban study. The average values ranged between 35.5 and 40.3 mg kg\({}^{-1}\) for the PSs and ESs, and are comparable to Galati values obtained in other studies [33; 34]. The average values compared to the average in Europe are higher but smaller than the average value in the world. Ni is not a very toxic pollutant, but it causes at least 30% of population allergies and at high concentrations can cause respiratory problems and even cancer. Ni can be found in fertilizers, alloys, batteries, fungicides, etc. [21; 29]. Copper (Cu) presented a minimum value of 28 mg kg\({}^{-1}\) and a maximum of 55 mg kg\({}^{-1}\) for PSs and for ESs the minimum value was 25 mg kg\({}^{-1}\) and the maximum was 56 mg kg\({}^{-1}\). According to Romanian legislation [52], the NV is 20 mg kg\({}^{-1}\), and in all locations the obtained concentrations were higher than the NV but the SAT value (100 mg kg\({}^{-1}\)) was not surpassed (Figure 13, Appendix A). The mean value for PSs was 39.3 mg kg\({}^{-1}\) and for ESs it was 36.8 mg kg\({}^{-1}\), which were higher than those found in Galati for soils affected by industrial and agricultural activities [33; 34], but within the same range when compared to the Cu value of 36.60 mg kg\({}^{-1}\) reported by [55]. Compared to the European and world average values, the mean values found in the present study were higher. In this case, the maximum concentrations of Cu were found on the first location. Cu sources close to intensely circulated roads are cars and other electric vehicles [61]. Cu in high concentrations can cause anemia for children and can accumulate in the liver of adults, leading to necrosis. Cu can be found in pipes, printed circuits, materials used for buildings in general, braking devices and radiators [21; 29]. Zinc (Zn) had a minimum value of 113.3 mg kg\({}^{-1}\) and a maximum of 212.8 mg kg\({}^{-1}\) for PSs, and for the ESs the minimum value was 105 mg kg\({}^{-1}\) and the maximum 383.6 mg kg\({}^{-1}\). The maximum values exceed the NV for Zn equal to 100 mg kg\({}^{-1}\) and in one case even the SAT value (300 mg kg\({}^{-1}\)) [52], at location 1 at the edge of the park (Figure A4, Appendix A). The average values 142.38 mg kg\({}^{-1}\) for PSs and 164.05 mg kg\({}^{-1}\) for ESs exceed the world and European average values. Comparing the average values obtained for Zn with the ones found in Galati for agricultural and industrial influenced soil, it can be concluded that in our case the Zn concentrations are higher [33; 34; 55]. The highest concentration of Zn (383.6 mg kg\({}^{-1}\)) was found at the first location of the study. Zn can be found in oils, pneumatics and old car pieces, alloys, and compositions of brass and bronze. At normal concentrations, Zn is essential for the development of children but high concentrations can interfere with calcium uptake [21; 61]. For arsenic (As), the minimum values for PSs and ESs were 4 mg kg\({}^{-1}\) and 4.8 mg kg\({}^{-1}\) and the maximum values, for the same locations, were 8 mg kg\({}^{-1}\) and 8.4 mg kg\({}^{-1}\), being lower than the normal value of 5 mg kg\({}^{-1}\)[52].