Survey of Arsenic and Copper Ions Concentration in Water Distribution System of Selected

The urbanization, industrial development, mining, agricultural and industrial effluents have led to polluting the environment with heavy metals such as arsenic and copper. The intoxication with high concentration arsenic is adverse effects on skin, liver, lungs, and blood system. The objective of this analytical survey was to evaluate the levels of heavy metal (arsenic and copper ions) in the water distribution system of selected hospitals in Tehran, 2018

This descriptive-analytical study was accomplished on the 22 water samples were investigated from 22 water distribution system hospitals in Tehran city in 2018. The arsenic and copper ions concentration was determined according to the procedures 3500-As B at 520 nm and 3500-Cu B at 457 nm, respectively, and after comparing the results with national and international standards, the results were analyzed by using SPSS 18 and geographical information system (Arcview GIS9.3) software.

The arsenic ion concentration of 22 water samples (100%) was lower than the national maximum allowable standard (10 ppb) and the United States-Environmental Protection agency maximum concentration (10 ppb). The copper ion concentration of 22 water samples (100%) was lower than the national maximum allowable standard (2 ppm) and the United States-Environmental Protection agency maximum concentration (1.3 ppm). The maximum arsenic concentration was seen in station No. 20.

According to results, arsenic insecticide and pesticide application in agriculture land use is the most reason of arsenic ion concentration variations