a comparative study on mineral contents of soybean by two methods of digestion using icp-oes technique: a risk assessment study

Introduction: in recent years, the contamination of food with heavy metals has received much attention. plants can absorb metal pollutants through contaminated water, soil, and air. materials and methods: in the current study, accumulation of minerals in three types of soybeans was investigated by wet and dry digestion methods using icp-oes technique. thereafter, the metals' health risk was assessed by estimated daily intake, toxic hazard quotient (thq), and hazard index (hi) values. results: according to the results, the concentrations of cr, se, ca, fe, mo, mn, and mg in soybean seeds were 0.034-170.88 mg/kg, 0.21-243.79 mg//kg, 2.50-33.37 mg/kg, 0.05-0.86 mg/kg, 0.071-203.57 mg/kg, 0-0.47 mg/kg, and 2.69-19.31 mg/kg, respectively. the ashing method had a better performance in determining ca, fe, mo, mn, and mg concentrations than the wet digestion method. the thq rates were below 1 for the three varieties of each mineral element, but the hi values of variety 2 and variety 3 were higher than 1 in both methods. conclusion: furthermore, continuous monitoring of the soybeans' mineral and heavy metal contents seems necessary.