ANALYSIS OF LONG-RANGE TRANSPORTED AIR-POLLUTANTS - ORIGIN OF ACID AEROSOL IN RIME FOUND AT KYUSHU MOUNTAINOUS REGIONS, JAPAN

Chemical species in the melted rime were analyzed by analytical electr on microscopy, in order to find the evidences of long-range transport of air pollutants from the cities of Asian continent. High concentrati ons of SO42- and NO3- were found in the solutions of melted rime. Thes e solutions at same time showed very low pH (3.62 and 3.92). In additi on, numbers of particles were found in the rime. The particles around 1 mum diameter were considered to be the combustion products of coal, whose concentration ratio of lead and zinic (Pb/Zn) were similar to th at at Seoul, Korea. It is suggested that the particles in rime has bee n transported to Japan accompanied with acid pollutants by prevailing westerlies, and may be deposited on the top of Kyushu mountainous regi on, Japan.