Heavy metals concentrations (Ni / Pb / Cd) in Spinach (Spinacia oleraceae) with Effect of Atmospheric Desiccation (Case Study: Upper Hand and Downstream of Ramin Ahvaz Power Plant)

Several studies have been done to measure the concentration of heavy metals in vegetables, but so far, research on the determination of heavy metals in spinach and soil vegetation in upstream and downstream of the Ramin power plant using inductively coupled plasma - Optical emission spectroscopy has not been performed. Therefore, the purpose of this study was to determine the concentration of cadmium, lead, and nickel in spinach and soil harvested from upstream and downstream fields of Ramin Power Plant.
Material and 99 vegetable and soil samples were collected. After chemical digestion (for soil using EPA 3050 and for plant using Jackson, 1980), preparation was performed by the ICP-OES induction plasma coupling device. Then, the results were analyzed using SPSS20 software.
The results showed that concentrations of Cd, Pb and Ni in spinach and the soil bottom of the plant were 17.76, 20.89 and 43.68 mg / kg, 0.09, 0.1, 2.52 mg / kg, respectively. And in the spinach and the upper soil of the Ramin power plant were measured 6.81, 17.94 and 28.38 mg / kg, 0.88, 0.8 and 1.85 mg / kg respectively, which according to the standard limit. Concentration of cadmium, nickel and lead in spinach was higher and in soil below standard level. The concentration of all three metals in all vegetable samples was higher than the standard standard. The general pattern of concentrations of metals in vegetables and soil is Ni> Pb> Cd.
Discussion and Considering the high concentration of heavy metals in spinach herb and the impact of atmospheric dry atmospheric precipitation in the region, focusing on the potential risk of heavy metals contamination for food safety and human health in agricultural soils and upstream and downstream Ramin power plants it is very necessary.