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Fractionation and characterization of humic acids from organic amended rice paddy soils
- Authors
- Pramanik, Prabhat; Kim, Pil Joo
- Issue Date
- 1-Jan-2014
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Fractionation of HA; Degree of humification; FTIR; Pyrolytic GC-MS; Rice paddy soil
- Citation
- SCIENCE OF THE TOTAL ENVIRONMENT, v.466, pp 952 - 956
- Pages
- 5
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- SCIENCE OF THE TOTAL ENVIRONMENT
- Volume
- 466
- Start Page
- 952
- End Page
- 956
- ISSN
- 0048-9697
1879-1026
- Abstract
- Humic acids (HAs), mixture of several complex-structured aromatic and aliphatic compounds, are ubiquitous in the terrestrial environment In this study, HAs were fractionated on the basis of their polarity (degree of humification). The fractions namely 200P, 300P and 400P were comparatively more humified than fractions like 800P and 800S. The application of organic amendments significantly increased concentrations of HA fractions especially the more humified fractions in rice paddy soils. Among the different fractions, 300P fraction was the most abundant in rice paddy soils and its concentration was significantly increased due to compost application. The compounds like methyl ketone and 3-phenylprop-2-enal contributed almost 90% of 300P fraction. (C) 2013 Elsevier B.V. All rights reserved.
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