1993 Volume 1993 Issue 6 Pages 788-791
Chemical species in the melted rime were analyzed by analytical electron microscopy, in order to find the evidences of long-range transport of air pollutants from the cities of Asian continent. High concentrations of SO24- and NO, - were found in the solutions of melted rime. These solutions at same time showed very low pH (3.62 and 3.92). In addition, numbers of particles were found in the rime. The particles around 1 pm diameter were considered to be the combustion products of coal, whose concentration ratio of lead and zinic (Pb/Zn) were similar to that at Seoul, Korea. It is suggested that the particles in rime has been transported to Japan accompanied with acid pollutants by prevailing westerlies, and may be deposited on the top of Kyushu mountainous region, Japan.
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