RAINWATER CONTAMINATION AND SOURCES IN TAOYUAN COUNTY, TAIWAN

In this study, an acid precipitation monitoring network was set up to investigate the characteristics of contamination and sources in rainwa ter in Taoyuan County, Taiwan. Wet-only precipitation samples were col lected from February 1994 to January 1995. Mean pH ranging from 3.21 t o 4.49 is observed in Taoyuan County and reveals that rainwater acidif ication is indeed severe in this region. Sulfate is the dominant chemi cal component (153.5 mu eql(-1)) and follow by Cl- (133.4), Na+ (96.0) and NH4+ (80.9). Source apportionment of soluble ions with marine and crustal origins is calculated from the analysis of neutralization cap acity factor and enrichment factor. The implications of results are di scussed.