Study of growth and some physiological responses of sunflower to nickel heavy metal and effect of magnetic nanoabsorbent Fe3 O4

Experiments were carried out with four concentrations of nickel chloride (0, 10, 80 and 220 mg/l) and a constant concentration of nano-adsorbent Fe3O4 (4 g/l), plus control. The treatments were soluble in plants as alternatives to normal water. The results were statistically analyzed by analysis of variance. The results showed that the least growth by weight was observed for plants with 220 mg Ni treatment. Proline in shoot increased significantly relative to root compared to control. Measurement of nickel heavy metal content by ICP-AES atomic absorption spectrophotometer showed that the concentration of nickel metal increased in the plant as it increase in the water. Inductively coupled plasma atomic emission spectroscopy is a method of emission spectroscopy that excites atoms and ions with a plasma, causing it to emit electromagnetic radiation at wavelengths characteristic of a particular element. Magnetic nanoparticles treatment Fe3O4 showed a significant reduction in nickel concentrations in the plant, indicating that they were successful in removing nickel metal. The results of antioxidant potential showed that concentrations of nickel as heavy metal stress increased the antioxidant and the treatment of nickel with nanoparticles in all three concentrations reduced the antioxidant. The nickel heavy metal in high concentrations is toxic for sunflower plant and the magnetic nanoparticle successfully absorbs the nickel metal up to 99 percent and reduces its toxic effects in the water.