Atomic Absorption Spectrophotometry for determination of Heavy Metals concentration in the Hornwort and water hyacinth plants growing in Tigris River


  • Samir A. Salman, Haider A. J. Almuslamawy, Alaa F. Sulaiman, Raghad S. Mouhamad


heavy metals, Hornwort (Ceratophyllum demersum) , water hyacinth (Eichhornia crassipes).


 The paper shows our findings on the acumulation of the 6 heavy metals (arsenic, cadmium, lead, chromium, cobalt and nickel) which absorped at  two aquatic plants water Hyacinth (Eichhornia cruassipes) and Hornwort(Ceratophyllum demersum) , growing in the River Tigris, in Southeast Baghdad, Iraq. Laboratory testing has found that heavy metal hyper-accumulators are some aquatic plants. In assessing the scope of this on-site phenomena, an  assessment of heavy metals (Cd, Pb, As,  Ni, Cr and  Co) content from  water  hyacinth (Eichhornia  crassipes) and Hornwort (Ceratophyllum demersum)  freely  growing  in around river Tigris,  was  done  using  atomic  absorption  spectrophotometry  (AAS). The over mean concentration of heavy metals in E. crassipes samples was calculated as follows: As,  24.6±11.9,  Cd,  6.70±2.55 , Pb,  47.9±14.8, Cr, 25.7±9.90, Ni, 26.8±12.8 and Co, 5.76±2.46 mg/kg. In C. demersum samples was, As, 70.3±16.2, Cd, 9.37±5.52, Pb, 44.9±13.4, Cr, 27.4±5.39Ni, 33.0±14.4 and Co, 14.2±7.32. The  load  of  heavy  metals adsorption   in  water  hyacinth  plants samples as the adsorpt surface  increased  in  the order  Co<Cd<As<Cr<Ni<Pb, and in Hornwort plants samples increased as follows Cd<Co<Cr<Ni<Pb<As. The concentrations of As, Cd, Pb, Cr, Ni and Co were upper permissible. The study closes with the monitoring of violations of Assay of Heavy Metals in of  Hornwort (Ceratophyllum demersum) and water  hyacinth (Eichhornia  crassipes) Growing in Tigris  River; all of the objectives of environmental sustainable development and river management.