The heavy metal analysis was conducted using Microwave Plasma-Atomic Emission Spectroscopy (MP-AES42000, Agilent Technologies, USA). German supplier Riedel-de Haen provided laboratory quality hydrochloric and nitric acids. Agilent Technology USA provided stock standard solutions at 500 mg/L concentrations for the element's cadmium, chromium, copper, iron, manganese, nickel, lead, and zinc. The material was prepared for analysis by adhering to a strict pre-treatment methodology . Every glassware that was used during the digestion process was thoroughly cleaned, first immersed in an overnight solution of 5% (v/v) nitric acid, then rinsed with deionized water and dried using a lab drier. The materials were broken down using a 3:1 nitric-hydrochloric acid combination in preparation for the acid digestion procedure. Weighed each sample precisely at 0.5 g using the ED224S Sartorius There was an analytical equilibrium. After adding 7.5 mL of 65% nitic acid and 2.5 mL of 30% hydrochloric acid to the samples, the mixture was heated for 4 hours at 120°C and then allowed to cool. Once digestion was complete, each digested sample was mixed, cleaned, and filtered through Whatman No. 1 Filter paper with the addition of 20 mL of deionized water. To ensure precision and consistency in the analysis that followed, a suitable amount of deionized water was added to bring the final volume up to the mark of a 50 mL volumetric flask. The following equation was used to calculate the actual concentration, which was represented in mg/kg: