Some of Heavy Elements in Water, Fish and Plant Species from Shatt Al-Arab at Basrah Governorate –Iraq

Abstract

Current study had done in November 2018 in four stations include two stations in south and another two in north of Shatt Al –Arab of Iraq. The pH value is ​​ranged from 7.85 to 8.89 as well as the electrical conductivity from 2.84 to 3.92 ms/cm while the salinity is ranged from 1.81 to 2.5cPPT and these values ​​were recorded at temperature ranging (14-18.2) ˚C and dissolved oxygen was 6 to 9.22 mg /L. The biological oxygen demined ranged was (1-5) mg/L. These total dissolved heavy elements showed significant differences in water, fish, and plant samples. In water samples, found iron value was in the range of 9.52 to 14.97) mg/L while zinc component value was ranged from 0.48 to 1.11 mg/L, and copper component values ranged between (0.275 -0.848) mg/L. In the all body fish samples, the iron component appeared value ranged from 11.18 to 15.83 mg/kg dry weight while the value of zinc component is ranged of (17.306-74.25) mg /kg dry weight while copper component recorded value ranging of (11.45 - 34) mg / kg dry weight.  Further, plant samples contain iron element value ranged from 16.12 to 42.12 mg / kg dry weight while zinc element value ranged between (22.55-142) mg / kg dry weight and copper component recorded values ranging of (65.875-94.5) mg / kg dry weight. However, cadmium and lead elements were not detectable in all plant species.