抄録
Characteristics of groundwater pollution by volatile chlorinated hydrocarbon were examined for alluvial fan wells. The results showed that some wells were contaminated both by nitrate and by 1, 1, 1-Trichloroethane. The principal component analysis and cluster analysis were applied to water qualities of contaminated wells. The results showed that the grouping was more dependent on sampling time than on sampling station, and that the variation of 1, 1, 1-Trichloroethane concentration was related to the grouping on the sampling day.
