Bioaccumulation of Lead and Zinc Elements in Plant Shoot of Phragmatis australis Grown in Wady Al-Kharrzi at Mosul City, Iraq

The quality of Wady Al-Kharrzi wastewater which is considered as one of sources of Tigris river pollution in Mosul city have been investigated, Concentrations of Lead and Zinc tests of wastewater and plant samples which were taken from different sites of the Wady have been conducted to know the degree of contamination and the role of Phragmatis australis in phytoremediation. The results indicated high concentration of the elements Pb and Zn either in the Wady wastewater (384, 119) ug. L-1 or leaves and stems tissues of Phragmatis australis, which reached to (4.992, 0.719 ) and (7.304, 3.594) ug. Gm-1 dry weight respectively. Also, significant self-purification were noted along the Wady wastewater flow, through the role of phytoremediation of the aquatic plants, with Biological accumulation coefficient of Pb and Zn in stem tissues get to (31.34- 36.33) respectively. .