Humic acids of different origin as modifiers of cadmium-ion chemistry: A spectroscopic approach to structural properties and reactivity

Influence of the humification process on the properties of peat humic acids Comparative and complex characterisation of peat humic acids (HAs) isolated from peat profiles of different origin in Latvia was conducted. Elemental and functional analysis of the isolated HAs was made and their acidity and molecular weight were estimated. Spectral characterisation included UV-Vis, IR, electron spin resonance and fluorescence spectra. Structural characterisation of HAs was by both 1H and13C nuclear magnetic resonance spectra. Properties of HAs isolated from the Latvian peat were compared with HA from other sources (soil, water, coal and synthetic humic substances). Major properties of peat HAs depended on their origin, indicating the importance of humification processes. HAs isolated from peat of more recent origin were more similar to soil Has, while there was a greater degree of humification in part from older sources.

Download Full-text

Humic acids: Structural properties and multiple functionalities for novel technological developments

Materials Science and Engineering C ◽

10.1016/j.msec.2015.12.001 ◽

2016 ◽

Vol 62 ◽

pp. 967-974 ◽

Cited By ~ 150

Author(s):

Bruna Alice Gomes de Melo ◽

Fernanda Lopes Motta ◽

Maria Helena Andrade Santana

Keyword(s):

Structural Properties ◽

Humic Acids ◽

Technological Developments

Download Full-text

Triallate adsorption onto humic acids of different origin and nature

Chemosphere ◽

10.1016/s0045-6535(99)00102-2 ◽

1999 ◽

Vol 39 (2) ◽

pp. 183-198 ◽

Cited By ~ 8

Author(s):

V. D'Orazio ◽

E. Loffredo ◽

G. Brunetti ◽

N. Senesi

Keyword(s):

Humic Acids ◽

Different Origin

Download Full-text

Comparative IR spectral characteristics of humic acids from peats of different origin in the Tomsk area

Pharmaceutical Chemistry Journal ◽

10.1007/s11094-009-0323-y ◽

2009 ◽

Vol 43 (7) ◽

pp. 418-421 ◽

Cited By ~ 7

Author(s):

M. V. Gostishcheva ◽

M. V. Belousov ◽

M. S. Yusubov ◽

R. R. Ismatova ◽

S. E. Dmitruk

Keyword(s):

Humic Acids ◽

Spectral Characteristics ◽

Different Origin

Download Full-text

The application of photoinduced luminescence in research on humic substances of various origins

Oceanological and Hydrobiological Studies ◽

10.2478/v10009-009-0032-6 ◽

2009 ◽

Vol 38 (3) ◽

Author(s):

Lilla Mielnik

Keyword(s):

Humic Substances ◽

Structural Properties ◽

Humic Acids ◽

Bottom Sediments ◽

Water Body ◽

Drainage Basins ◽

Hydrochemical Parameters ◽

Halogen Light ◽

Preliminary Research

The application of photoinduced luminescence in research on humic substances of various originsThis paper discusses preliminary research on using photoinduced luminescence phenomena in determining the structural properties of humic acids extracted from the bottom sediments of two lakes. The lakes examined differ in the hydrochemical parameters of the water body, as well as in the drainage basins surrounding the lakes. Photoinduced luminescence of humic acids was induced with a halogen light of 1500 μmol m

Download Full-text