Evaluation of transport velocity of metals in rivers water Muria area

The Evaluation of Al, Mn, Cd, As, Cd dan Cr metals transport velocity in rivers water Muria area have been done. The metals transport velocity was calculated from multiplication between charge river water with metals concentration on water body. The final purpose experiment is (1) getting of river background level data, (2) to predicted of rivers water quality base on metals transport velocity and pH rivers water role in metals migration to sediment at Wareng, Balong, Dombang, Kancilan and Suru rivers. Sampling was done at wet season and location selected at 2 km until 5 km from the side of candidate of nuclear power plant. Base on transport velocity index > 100 mg/dt evaluation result show that metals transport successively the Wareng, Balong, Dombang, Kancilan and Suru river all have polluted by Mn and Hg metals. While Cd metal have polluted Balong river, Kancilan river and Suru river, the metal As have polluted Kancilan river. Velocity transport of Mn metal was found in Kancilan river was 1,392.5 mg/dt, while Cd and Cr metals Balong river was 347.2 mg/dt and 51.2 mg/dt respectively. While the highest velocity transport of As and Hg metal was found in Kancilan river were 113.8 mg/dt and 1,334.9 mg/dt respectively. By observing of pH water, the phenomenon Al, Mn, Cd, As Cr dan Hg metals in water river of Muria area will tend to moved into the sediment at height pH, on the contrary that the lower pH the metals will remain and dissolve under water. (author)