Comparison Results of the Two Different Enrichment Factor Analysis Methods of Heavy Metals in the West Banjir Kanal River Sediment, Central Java

Abstract The West Banjir Kanal (WBK) River in Semarang City is a river that plays an important role supporting the various needs of people City. Land use around and utilization WBK water, cause water to be contaminated with heavy metals, which have potential accumulate sediments. This study was conducted analyze compare results analysis metal enrichment factors Cd, Cr, Cu, Pb, Zn sediments river, Semarang, 2 different methods. at 7 sampling stations, representing estuaries, middle, upper reaches rivers. Sediment collected Van Veen Grab, then prepared wet digestion, analyzed concentration AAS. showed metals sediment studied station still within limits natural concentration. factor Cd smaller than 1, however, for other (Cr, Pb) some exceeded 1. test comparison Pb differed markedly But on can not compared, because variety data 0.