Analisa Kadar Fosfat pada Beberapa Air Sungai di Kota Medan Secara Spektrofotometri UV-Visible

Abstract

Analysis of phosphate value have been done from the river water of Amplas river have been taken from Amplas area, the water of Deli river have been taken from Juanda area and also the water of Babura river have been taken from Padang Bulan area by Spektrofotometri UV - Visible with the length of wave is 880 nm. The phosphate value of Amplas river water sample is upstream 1 is 0,14255 mg/L, upstream 2 is 0, 14315 mg/L, downstream 1 is 0,1886 mg/L, downstream 2 is 0, 1899 mg/L, in Deli river which is located in Juanda area is upstream 1 is 0,0903 mg/L, upstream 2 is 0,0944 mg/L, downstream 1 is 0,1104 mg/L, downstream 2 is 0,1121 mg/L. And in Babura river which is located in Padang Bulan area is upstream 1 is 0,1338 mg/L, upstream 2 is 0,1190 mg/L, downstream 1 is 0,1257 mg/L and downstream 2 is 0,295 mg/L. According government rules number 82 years 2001, from analysis of phosphate value which taken from third the river thatboth of them still comply the normative level standard of water class II (0,2 mg/L) which used to water and etc.