ISSN:
1588-2780
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Energy, Environment Protection, Nuclear Power Engineering
Notes:
Abstract HA samples obtained from sedimentary soil and peat in aqueous media were irradiated with γ-rays, in the dose range from 10 to 100 kGy, with the aim to study the chemical differences in the material before and after irradiation. The materials were analyzed by elemental analysis, UV/Vis spectroscopy (E4/E6 ratio), functional groups content, gel permeation chromatography (GPC) and IR spectroscopy. Gas chromatography was utilized to analyze the generated gases. Humic acids from peat and from soil are quite different. After irradiation an increasing in the average molecular weight was observed which depends on the material characteristics. There was observed also a release of CO2 upon irradiation. By infrared spectroscopy, with the help of computer simulations, the characteristic bands of ester C=O and C−O stretchings reinforces the contribution of carboxylic groups in the condensation process.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02034242
