Structure of Humic Acids in Zonal Soils from 13C NMR Data

被引：49

作者：

Kholodov, V. A. ^{[1
]}

Konstantinov, A. I. ^{[2
]}

Kudryavtsev, A. V. ^{[2
]}

Perminova, I. V. ^{[2
]}

机构：

[1] Russian Acad Agr Sci, Dokuchaev Soil Sci Inst, Moscow 119017, Russia

[2] Moscow MV Lomonosov State Univ, Fac Chem, Moscow 119991, Russia

来源：

EURASIAN SOIL SCIENCE | 2011年 / 44卷 / 09期

关键词：

SUBSTANCES;

D O I：

10.1134/S1064229311090043

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

The structure of humic acids (HAs) in zonal soil types soddy-podzolic soils (two samples), gray forest soil (one sample), and chernozems (two samples) was quantitatively studied by C-13 NMR spectroscopy. In the series considered, the content of unsubstituted carbon in the aromatic fragments of HAs increased, and the fraction of unsubstituted aliphatic structures decreased. HAs of soddy-podzolic soils were found to be enriched with carbohydrate fragments compared to HAs of chernozems and gray forest soil. The carbon skeleton of HAs from typical rich chernozem contained significantly more aliphatic and carbohydrate fragments compared to typical chernozem, which probably reflected the lower degree of HA transformation in rich chernozem. DOI: 10.1134/S1064229311090043

引用

页码：976 / 983

页数：8

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