| Nitrogen Forms in Humic Substances |
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| 作者姓名： | ZHUO SU-NENG WEN QI-XIAO |
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| 作者单位： | [1]LMCP，InstituteofSoilScience,AcademiaSinica,P.O.Box821,Nanjing210008（China） [2]LMCP，InstituteofSoilScie,AcademiaSinica,P.O.Box821,Nanjing210008（China） |
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| 基金项目： | Project supported by the National Natural Science Foundation of China |
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| 摘 要： | In this paper,the nitrogen forms in newly-formed humic substances,including humic acid (HA),fulvic acid (FA) and humic acid in humin (HAI),were studied by using the ^15N CP-MAS NMR technique in combination with chemical approaches.Results show that the majority of nitrogen in HA,FA and HAI was in the amide form with some presented as aliphatic and/ or aromatic amines and some as pyrrole type nitrogen,although the contents of nonhydrolyzable nitrogen in them differed greatly from each other (15-55%).
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| 关 键 词： | 腐殖酸 氮形态 灰黄霉酸 天然同位素 氮15 核磁共振 土壤腐殖质 |
Nitrogen Forms in Humic Substances |
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| ZHUO SU-NENG,WEN QI-XIAO.Nitrogen Forms in Humic Substances[J].Pedosphere,1992,2(4):307-315. |
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| Authors: | ZHUO SU-NENG and WEN QI-XIAO |
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| Institution: | LMCP, Institute of Soil Science, A cademia Sinica, P. O. Box 821, Nanjing 210008;LMCP, Institute of Soil Science, A cademia Sinica, P. O. Box 821, Nanjing 210008 |
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| Abstract: | In this paper,the nitrogen forms in newly-formed humic substances,including humic acid (HA),fulvic acid (FA) and humic acid in humin (HAI),were studied by using the ^15N CP-MAS NMR technique in combination with chemical approaches.Results show that the majority of nitrogen in HA,FA and HAI was in the amide form with some presented as aliphatic and/ or aromatic amines and some as pyrrole type nitrogen,although the contents of nonhydrolyzable nitrogen in them differed greatly from each other (15-55%). |
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