Host: The Japanese Association of Mineralogists, Petrologists and Economic Geologists
This study is devoted to the monitoring solute concentrations in river water (from May 2001 to January 2005) in the Tanzawa Mountain. As a consequence of atmospheric pollution and related strong acid deposition, surface water and soil acidification has been considered to be a major environmental problem in the forest regions adjacent to densely populated cities. The Tanzawa Mountains is located about 50 km west of the Great Metropolitan Tokyo and an area receiving higher amounts of pollutants through atmospheric deposition than the Kofu Mountains. In addition, the areas have received considerably high SO2 deposition emitted from Mt. Miyake volcano since August 2000. All water samples were filtered (0.45 mm pore diameter membrane filter) and concentrations of SiO2, Ca2+, Mg2+, Al3+, PO34- were analyzed by ICP, Na+ and K+ by AA, and Cl-, NO2-, NO3-, SO42- by IC. HCO3- was determined by the 0.1N-H2SO4-titillation method.
