Physico-chemical attributes of humic acid extracted from tropical pect
Basic research conducted on humic acid (HA) in tropical soils is limited. A study was conducted to characterize HA extracted from tropical peat by elemental and functional group analyses, infrared (IR) spectra and by direct examination on HA using scanning electron microscopy (SEM). From the eleme...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universiti Putra Malaysia Press
1996
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| Online Access: | http://psasir.upm.edu.my/id/eprint/3601/1/Physico-cheDlical_Attributes_of_HUDlic_Acid_Extracted_froDl.pdf http://psasir.upm.edu.my/id/eprint/3601/ http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JTAS%20Vol.%2019%20(2&3)%20Dec.%201996/12%20JTAS%20Vol.19%20(23)%201996%20(Pg%20189-196).pdf |
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| Summary: | Basic research conducted on humic acid (HA) in tropical soils is limited. A study was conducted to characterize HA
extracted from tropical peat by elemental and functional group analyses, infrared (IR) spectra and by direct
examination on HA using scanning electron microscopy (SEM). From the elemental analysis it was found that C
ranged from 40.26 - 53.26%, H 4.84 - 6.36%,038.39 - 51.62%, N 1.51- 2.64%, and P 0.02 - 0.06%. Studies of
functional groups indicated that the carboxyl group present in HA of tropical peat was about twice as high as that of
phenolic hydroxyl groups. From IR spectra, the HA had an aromatic character. Results of IR analysis also exhibited
consistently similar spectra, demonstrating that regardless of place of origin, the extracted humic compound had a
similar structure and was composed of the same functional groups. Electron microscopic examination of dried HA
showed a sub-angular blocky shape which varied in size. All extracted HA exhibited similar form. |
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