National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Fourier Transform Infrared (FTIR) Spectroscopy of humic substances shows major components through different peaks. FTIR spectrum of humic acid (HA) showed bands at 3246 cm-1 (H-bonded OH), 1721 cm-1 (C=O of COOH, C=O stretch of ketonic C=O), 1634 cm-1 (COO-, C=O of carbonyl and quinone) and 1102 cm-1 (C-O stretch or OH deformation of COOH). Whereas, fulvic acid (FA) showed peaks at 3497cm-1 (H bonded OH), 2925-2855cm-1 (aliphatic C-H stretch), 2415 cm-1 (extended aliphatic C-H stretch), 1648cm-1 (COO-, C=O of carbonyl and quinone), 1158 cm-1 (aliphatic C-H). Humic acid gives prominent peaks of aromatic components whereas, aliphatic peaks for FA. The distinctiveness of humic substances was influenced by land use management and climatic parameters (temperature and rainfall).
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