@article{oai:kitami-it.repo.nii.ac.jp:00006152,
 author = {佐々木, 満雄 and 岡, 宏},
 issue = {1},
 journal = {北見工業大学研究報告},
 month = {Mar},
 note = {application/pdf, For the investigation of chemical proparties and structure of peat humic acid，we have compared natural humic acid with the humic acid treated with oxidizing reagents，by the aid of the infrared spectrophotometric analysis and chemical analysis. In this case，the oxidation of humic acid was carried out with H_2O_2, aq. and HNO_3 aq.. The results of the above researches were as follows. By oxidation with H_2O_2 and HN0_3 aq.，humic acid was not converted step by step to low molecular humic acid but the oxidized part of humic acid was converted to oxalic acid，CO_2 gas，and soluble organic substances in water.},
 pages = {49--58},
 title = {泥炭フミン酸に関する研究（第２報）},
 volume = {1},
 year = {1963}
}