For the subsequent analysis of trace metals, Atomic Absorption Spectroscopy (AAS) FS280AA, manufactured by Agilent Technologies USA, was employed. All chemicals and reagents utilized throughout this study were of analytical and trace metal grades, sourced from reputable suppliers. Specifically, trace metal grades of 65% HNO3 and 30% HCl were procured from Riedel-de Haen, Germany. Stock standard solutions for each element, each boasting a concentration of 500 mg/L, were supplied by Agilent Technology USA. The utmost care was taken to maintain the purity of the samples, with deionized water being used exclusively throughout the entirety of the study. To prepare the samples for analysis, a rigorous pre-treatment protocol was followed. All glassware utilized in the digestion process was meticulously cleaned, initially soaked in a 5% (v/v) HNO3 solution overnight, followed by thorough rinsing with deionized water, and subsequently dried utilizing a laboratory dryer, specifically the Sanyo MIR-162. The acid digestion method, employing a nitric-hydrochloric acid mixture in a ratio of 3:1, was employed to break down the samples. Precisely 0.5 g of each sample was accurately weighed using the ED224S Sartorius Analytical balance. Subsequently, 7.5 mL of 65% HNO3 and 2.5 mL of 30% HCl were added to the samples, and the mixture was subjected to heating at 120°C for a duration of 4 hours, followed by a cooling period. Upon completion of the digestion process, 20 mL of deionized water was added to each digested sample, which was then stirred, washed, and subsequently filtered using Whatman 1 Filter paper. Finally, an appropriate volume of deionized water was added to bring the final volume up to the mark of a 50 mL volumetric flask, ensuring consistency and accuracy in subsequent analysis ,