Abstract
In order to investigate environmental pollution, the surface sediments of Lake Kawaguchi were analyzed for various hydrocarbons. The sampling was carried out at the western and the eastern basin of Lake Kawaguchi to compare with them. CPI (C_<13>-C_<35>) values of n-alkanes, the αβ/(αβ+ββ) ratio of C_<31> hopane and the concentration of PHAs were used for evaluation of pollution. Three kinds of molecular markers indicate that the eastern basin is more polluted than the western basin. The influence of an asphalt pavement developed on a circular road around the lake in 1938 was detected in the sediments at the depth of 13〜14cm from western basin, and 18〜19cm from the eastern basin.
