@article{oai:nagasaki-u.repo.nii.ac.jp:00023860,
 author = {近藤, 寛 and 藤田, 毅},
 journal = {長崎大学教育学部紀要. 自然科学},
 month = {Jun},
 note = {The aliphatic hydrocarbons, vitrinite reflectances, and CHN contents in coals from the coal fields in Kyusyu and Hokkaido were studied. The low CPI values between 0.97 and 1.13, high L/H ratios between 0.61 and 1.28 of aliphatic hydrocarbons in the coals from Hokkaido indicate that the coals from Hokkaido are more mature than the coals from Kyusyu, which have the high CPI values between 1.16 and 2.00, low C/H ratios between 0.13 and 0.55. The low Pr/Ph ratios of the coals from Hokkaido are also characteristic of mature coals. There are no major variation in the vitrinite reflectances of the bituminous coals in Kyusyu and Hokkaido. The coals have high vitrinite reflectances show a tendency to have the low CPI values of aliphatic hydrocarbons., 長崎大学教育学部紀要. 自然科学. vol.69, p.25-32; 2003},
 pages = {25--32},
 title = {九州および北海道産石炭の脂肪族炭化水素の比較},
 volume = {69},
 year = {2003}
}