# Can Isotopes Be Used as Lead Tracers in Shooting-Range Soils?
## 3 Results and Discussion
\begin{table}
\begin{tabular}{c c c c c c c c c c c c} \hline
**Sample** & **Soll Use** & **Depth (cm)** & **Pb mg kg\({}^{-1}\)** & **200 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** & **300 Pb/High** \\ \hline Contaminated Soll & Military shooting range & 5-15 & 5297 & 15.14 & 15.11 & 35.98 & - & 1 & 2.38 & South Korea & [22] \\ Contaminated Soll & Military shooting range & 15-30 & 4259 & 16.67 & 16.56 & 39.62 & - & 1.01 & 2.39 & South Korea & [22] \\ Control soil & Military shooting range & 0 & 14 & 18.82 & 16.1 & 40.7 & - & 1.17 & 2.53 & South Korea & [22] \\ Control soil & Military shooting range & 5-15 & 21 & 18.21 & 15.53 & 38.73 & - & 1.17 & 2.49 & South Korea & [22] \\ Control soil & Military shooting-range & 15-30 & 33 & 18.55 & 15.95 & 40.03 & - & 1.16 & 2.51 & South Korea & [22] \\ \hline \multicolumn{10}{c}{**Sediments**} \\ \hline Contaminated sediment & Hunting area & - & 25.86 & & & 2.0843 & 1.1800 & 2.4603 & Spain & [33] \\ Contaminated sediment & Hunting area & - & 31.17 & & & 2.0675 & 1.1803 & 2.4649 & Spain & [33] \\ Contaminated sediment & Hunting area & - & 12.56 & & 2.097 & 1.1768 & 2.4630 & Spain & [33] \\ \hline \multicolumn{10}{c}{\({}^{*-}\) not indicated.} \\ \end{tabular}
\end{table} 
Table 1: Conf. \begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline
**Manufacturer** & **Amanution Type** & **200 Pb/High**  
_Research Implications of the Present Data_  
Lead isotope ratios have been widely used to differentiate sources of environmental lead in several environmental matrices due to lead released to the environment (e.g., exhausted from gasoline, and industrial sources) maintaining a characteristic signature and usually does not change during the manufacturing processes [1; 2; 37; 4; 5; 6; 9; 10; 11; 2; 12]. However, our results showed the difficulties of using isotopic signatures from lead ammunition as tracers of lead in shooting or hunting areas and their potential use in wildlife studies due to the different use of different ammunition sources from different world regions or different origins from previous uses [34; 35; 36; 37; 38; 47]. This fact is that the manufacture of lead ammunition (e.g., bullets or shotgun pellets) can have various sources, such as mining, recycling and mixing scrap metal, car batteries, etc. Additionally, some shooting ranges can recover some spent ammunition that can be recycled, remanufactured and reused for shotgun cartridges [34; 36; 37; 38; 47; 48]. During the fusion processes, the purification and addi  
Figure 2: **(a)** Scatter plot for \({}^{208}\)Pb/\({}^{206}\)Pb versus \({}^{206}\)Pb/\({}^{207}\)Pb of lead isotope ratios for different shot pellet and ammunition manufacturers and studied soils. “Not indicated” means that authors have not reported a probable origin of shot pellet manufacturer/brand. **(b)** Detail of the crowded central region. Data compiled from [5; 16; 17; 18; 19; 20; 21; 22; 23; 34; 41; 42; 43; 44; 45]. tion of other additives, such as Sb, are aggregation phenomena that make the projectiles from the same box and manufacturer have different ratios and compositions, making it impossible to relate to the brand/batch manufacture. In this sense, [PERSON] et al.