Assessment and determination of heavy metals zinc, nickel and cadmium and physical and chemical parameters of water Shatrh
Subject Areas : Water PollutionR. Khanpoor Zaranji 1 , L. Salimi 2 , M. Ghaneh 3
1 - Dept. of Marine Environment, Faculty of Marine Science and Technology, Islamic Azad University Tehran North Branch
2 - Dept. of Marine Environment, Faculty of Marine Science and Technology, Islamic Azad University Tehran North Branch
3 - Dept. of Microbiology, Faculty of Science, Islamic Azad University Islamshahr Branch
Keywords: Heavy metals, Water Quality, Physical and Chemical parameters, river Shatereh,
Abstract :
Rivers are important water resources which to have broad application. Heavy metal are considered as important factors in pollution of water resources. On the other hand, the entry of pollutants into rivers, cause physical and chemical changes in them. The recognition of these metals and the knowledge of their parameters and trends is essential. This study aimed to determine physical and chemical parameters (temperature, pH, dissolved oxygen, EC) and the amount of zinc, nickel and cadmium of Shatereh river (Its water used to irrigate farm) located in the southwest of Tehran. Sampling was done at 3 stations in Esfand 1392 (Persian calender before the bridge Shatereh, industrial areas and agricultural areas) with 3 replications.Average ater temperature of 8.25 ° C, mean dissolved oxygen 8.03 , pH levelsranging 8.02 and the average amount were abserved EC 493.32 cm .Average amount of heavy metals, zinc, nickeland cadmium were respectively 0.4206, 38.135, 39.180 micrograms per liter. The variance of zinc, nickel and cadmium of there station at sig <0.05 showed that there was significant difference betwean 3 station. According to the EPA standard of measured parameters, the data are shown t in to be in the acceptable range and the results for zn showed that the levels in all 3 stations are within standard leveland heavy metal content of nickel and cadmium exceeded the standard level at 3 stations.
