It is thought that chemical components in rain water depend upon wind direction and generating situations of aerosols and gases. In order to elucidate the problem, the correlations among chemical component in rain water are obtained by analyzing the matrix method of correlation concentration. It is a technique of comparing the ratio of the componental concentration of a sample with the equivalent ratios of other samples.
High correlation numbers were obtained among the sampling situations in the west of Kanto district. The conclution was assumed the factories in the Tokyo-Yokohama area generated a great deal of aerosols and gases and they moved to the west of the Kanto district. This agreed with the assumption based on the measurement of the wind direction.
