Analisis Beban dan Indeks Pencemar Ditinjau dari Parameter Logam Berat di Sun…

( Halaman tidak ber nomor) Study on the pollution load index by means of heavy metal parameter in Siak river of Pekanbaru City has been conducted from February to May 2012. Samplings were conducted at two sites which were considered to have different input of pollutants. The heavy metals studied were Pb, Cu and Zn. The results showed that almost all water quality parameters, with the exception …