Kandungan Logam Pb dan Cu pada Daerah Aliran Sungai Deli Provinsi Sumatera Utara

Abstract

Water is a natural resource that supplies the needs of life many people so it needs to be protected in order to be useful for life and human life and other living organisms. Nowadays a very rapid process of industrialization followed by a very rapid population growth. The situation had a negative impact on the quality and the existenceof natural resourcesand the environment. One of several is a heavy metal pollution. This research aims to analyze the content of Pb and Cu in the middle and lower Deli watershed and to determine the Deli water quality based on water quality standards. This study was done on July until August 2013 at Deli watershed of North Sumatra province. The number of point observed station are 4 stations . The parameters that measured were aquatic physical and chemical, concentrations of heavy metals lead and copper in the water column by Atomic Absorption Spectrophotometry using ( AAS ) . The results showed lead concentrations of heavy metals ranged from 0.079- 0.408 mg/L , and the concentration of heavy metals copper ranged 0.19 to 0.589 mg /L . This result shows that heavy metal of lead and copper in Deli watershed has exceeded the quality standard.