Figure 1
Panel (a) cadmium (Cd), (b) chromium (Cr), (c) nickel (Ni), (d) lead (Pb). The figure consists of four vertical bar graphs. Each bar graph displays two vertical bars, which are identified in the legend as “Before” and “After”. Each graph includes a horizontal reference line across the graph. The first graph in the top left is labeled “a)”. The horizontal axis consists of two vertical bars arranged from left to right. The vertical axis is labeled “c(milligram per kilogram)” and ranges from 0,00 to 2,25 in increments of 0,25 units. A horizontal reference line is drawn at 0,50. The data for the bars are as follows: Before: 1,2 with an error bar ranging from about 0,9 to 1,9. After: 1,4 with an error bar ranging from about 0,9 to 2,2. The second graph in the top right is labeled “b)”. The horizontal axis consists of two vertical bars arranged from left to right. The vertical axis is labeled “c(milligram per kilogram)” and ranges from 80 to 260 in increments of 20 units. A horizontal reference line is drawn at 90. The data for the bars are as follows: Before: 125 with an error bar ranging from about 113 to 152. After: 200 with an error bar ranging from about 166 to 256. The third graph in the bottom left is labeled “c)”. The horizontal axis consists of two vertical bars arranged from left to right. The vertical axis is labeled “c(milligram per kilogram)” and ranges from 0 to 100 in increments of 10 units. A horizontal reference line is drawn at 50. The data for the bars are as follows: Before: 31 with an error bar ranging from about 25 to 46. After: 64 with an error bar ranging from about 44 to 96. The fourth graph in the bottom right is labeled “d)”. The horizontal axis consists of two vertical bars arranged from left to right. The vertical axis is labeled “c(milligram per kilogram)” and ranges from 0 to 80 in increments of 10 units. A horizontal reference line is drawn at 60. The data for the bars are as follows: Before: 25 with an error bar ranging from about 19 to 39. After: 56 with an error bar ranging from about 46 to 72. Note: All the numerical data values are approximated.Own elaboration graph comparing concentrations of (a) cadmium, (b) chromium, (c) nickel and (d) lead (mg/kg) in surface soils before (baseline) and after a single, well-documented artillery strike at a previously pristine site. Error bars represent ± standard deviation of analytical triplicates. Asterisks indicate statistically significant differences between before and after