書誌事項
- タイトル別名
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- Studies on the Structure of Peat Humic Acid (1)
- Study on the Chemical Constitution of Peat Humic Acids by High Resolution Nuclear Magnetic Resonance Spectroscopy
- NMRによる泥炭フミン酸の構造解析
抄録
The chemical structure of peat humic acids was estimated by means of nuclear magnetic resonance spectroscopic technique. The peat humic acid samples were prepared from extraction of Toyotomi moss peat, Ishikari reed peat and Kushiro reed peat with 1% sodium hydroxide, 3% sodium acetate and 1.8% sodium pyrophosphate aqueous solution. The NMR spectra were measured in deuteriodimethylsulfoxide with tetramethylsilane as an internal reference.<BR>From the NMR data, it was found that the peat humic acids had lactone units in the molecules. The number of constitutive carbon, hydrogen and oxygen atoms contained in the various functional groups was obtained by elementary analyses and chemical analyses. By using these data, the structural parameters such as carbon aromaticity fa, substitution parameter of aromatic system σ, alkyl substitution parameter to aromatic ring σali and ratio of hydrogen to carbon in hypothetical unsubstituted aromatic material Haru/Car, as summarized in Table 3 were calculated.<BR>It was concluded that in the peat humic acids, the ratio of aromatic carbon atoms to all carbons is about 50% and the acids have mainly mono-ring systems with a few of naphthalene units in the aromatic constitution. The ratios of benzene to naphthalene unit are about 2-3: 1 for Ishikari reed peat and 4-6: 1 for Toyotomi moss peat and Kushiro reed peat.
収録刊行物
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- 燃料協会誌
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燃料協会誌 48 (5), 295-302, 1969
一般社団法人 日本エネルギー学会
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詳細情報 詳細情報について
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- CRID
- 1390282679299035520
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- NII論文ID
- 130004015775
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- ISSN
- 2185226X
- 03693775
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- データソース種別
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- JaLC
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可