Publication detail

Effects of industrial compost on chemical and spectroscopic properties of soil humic substances from Luvi-Haplic Chernozem

ENEV, V. KLUČÁKOVÁ, M.

Original Title

Type

conference paper

Language

English

Original Abstract

Humic substances (HS) represent very significant components of the organic matter (OM) in soils and compost. Object of our study was soil of soil type Luvi-Haplic Chernozem (locality Praha-Ruzyně, Crop Research Institute). Three various amounts were added in soil Luvi-Haplic Chernozem in the year 2008: 124, 239 and 478 t/ha. Soil humic substances were extracted one year after compost application into the soil and analysed by means of ultraviolet-visible spectroscopy, infrared spectroscopy with Fourier transform, fluorescence spectroscopy and titration methods. Emission-Excitation spectra (EEM) obtained using fluorescence spectroscopy showed that compost contains well humified fractions of humic substances. In view of content of young less condensed aromatic structures is relative intensity of fluorescence of all free main peaks lower in comparison with soil humic substances. If we add more amount of compost, content of carboxylic, phenolic groups and ether bridges in soil humic substances increases, which was confirmed by infrared spectra. Humification index E4/E6 which was determined on the basis of measured UV-VIS spectra, decreases with decreasing amount of added compost. Measured values were higher than 4 for all extracted humic samples, which show on brown humic acids with lower molecular mass. The high value of humification index for compost confirmed the presence of young less condensed aromatic structures detected by fluorescence spectroscopy. Because the humification index decreases with depth of soil horizon, so we can say that lower soil layer content "older" more humified humic substances, which corresponds with results of other used methods.

Keywords

soil humic substances, compost, spectroscopic methods, Luvi-Haplic Chernozem

Authors

ENEV, V.; KLUČÁKOVÁ, M.

RIV year

2012

Released

7. 12. 2012

Publisher

Vysoké učení technické v Brně, Fakulta chemická, Purkyňova 464/118, 612 00 Brno

Location

Brno

ISBN

978-80-214-4425-6

Book

Studentská konference Chemie je život - Sborník abstraktů

Edition number

Pages from

276

Pages to

281

Pages count

BibTex

@inproceedings{BUT97158,
  author="Vojtěch {Enev} and Martina {Klučáková}",
  title="Effects of industrial compost on chemical and spectroscopic properties of soil humic substances from Luvi-Haplic Chernozem",
  booktitle="Studentská konference Chemie je život - Sborník abstraktů",
  year="2012",
  number="1",
  pages="276--281",
  publisher="Vysoké učení technické v Brně, Fakulta chemická, Purkyňova 464/118, 612 00 Brno",
  address="Brno",
  isbn="978-80-214-4425-6"
}