The acidic aerosols study in Sha‐Lu, Taiwan

Fine and coarse particles were collected by Universal sampler from June 1999 to January 2000 in Sha‐Lu, Taiwan. Concentrations of the inorganic chemical species (NO2 ‐, NO3 ‐, SO4 2‐, NH4 +, Cl‐, Mg2+, Ca2+, K+, Na+) in particulate phase were analyzed by ion chromatography. Two sampling sites were set inside and outside the campus of Hung‐Kuang Institute of Technology, and measurements in two sampling sites were carried out simultaneously from September 1999 to January 2000. The sampling site outside school was located on an overbridge above Chung‐Chi Road, named as CCROB. The sampling site inside campus was located on the roof of an eight‐story building, named as HKJ.T. Results showed that average coarse particle concentrations measured at HKIT were 1.16 times as that measured at CCROB. For the chemical composition of fine and coarse particles, sulfate and ammonium were distributed in fine particles. Nitrite, nitrate and chloride were distributed in coarse particles. The major salts existed in f...