中国および日本で使用される石炭と石油の硫黄同位体比

Abstract

Sulfur isotope ratio ({delta}-{sup 34}S) was measured for coals and oils used in northern China, eastern Russian and Japan. The {delta}-{sup 34}S values of northern Chinese coals and Russian coals are 7.7 {+-} 11.4 parts per thousand (about 5 parts per thousand in median) and 4.5 {+-} 4.85 parts per thousand in average, which are higher than those reported for coals in southern China. This suggests the difference of coal forming processes between northern China, eastern Russia and southern China. Oils (main fuel in Japan) show low {delta}-{sup 34}S values that are very different from those of Chinese and Russian coals. These differences in sulfur isotope ratios are reflected to the seasonal variation of sulfur isotope ratios of rain and aerosol in the Japan Sea side of Japan.