Nitrogen Forms in Humic Substances

作     者：ZHUOSU－NENG WENQI－XIAO 

作者机构：LMCP，InstituteofSoilScienceAcademiaSinicaP.O.Box821Nanjing210008（China） LMCP，InstituteofSoilScie 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：1992年第2卷第4期

页      面：307-315页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学] 

基　　金：Project supported by the National Natural Science Foundation of China 

主　　题：fulvic acid humic acid 15N CP-M AS NMR nitrogen forms 

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 *** 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%).