The concentration of Antimony in PbM ranges as BDL to
462 mg/kg (Fig. 1) which was in line with Ettler et al. [28] and
Lima and Bernardez [32]. Sb increases the hardness and mechanical
strength of alloys and also used in glass manufacturing sectors as
refining and oxidizing agents [30]. Cornelis et al. [31] reported the
concentration of As as 0.8–50 mg/kg among fossil fuel combustion
plants and we observed as BDL to 12.5 mg/kg (Fig. 1).