Kvantitativní FTIR spektrometrie huminových látek = Quantitative FTIR Spectrometry of Humic Substances

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The modern FTIR spectrometry enables both qualitative and quantitative analysis of humic (HS) and humic-like substances. Priority of this method in comparison with 13C NMR or titration analysis of functional groups consists in small quantity of consumed sample and time. The availability of FTIR spectrometers for smaller laboratories represents an additional advantage. However, the FTIR spectrometry demands high purity of humic substances, in particular low contents of illite minerals, water, and residues of reagents used for extraction or coagulation (diphosphate, sulphate or hydrofluoric acid). Namely, in analysis of large sample series, the FTIR spectrometry can successfully compete with the (in other respects irreplaceable) 13C NMR spectrometry. Besides the transmission (KBr) technique of FTIR spectra measurement, at which undesirable ion exchange occurs, the DRIFT and namely ATR (Attenuated Total Reflection) techniques are now widely applied for quantitative analysis of HS. The FTIR spectra-based classification of humic substances, which is rarely applied till now, seems to be a prospective tool. The FTIR spectrometry can widely be used also to study the humus biotransformation, interactions with metal ions, etc. … full description

Bibliographic Details

Main Author

František Novák

Other Authors

Vladimír Machovič
Hana Hrabalová
Miroslava Novotná

Document Type

Articles

Physical Description

11 ilustrací

Published in

Chemické listy. -- ISSN 0009-2770. -- Roč. 111, č. 6 (2017), s. 363-373

Subjects

SOIL TYPES

PODZOLS

Soil horizons

HUMIC ACIDS

FULVIC ACIDS

absorpce

INFRARED SPECTROPHOTOMETRY

PHYSICAL PHENOMENA

QUANTITATIVE ANALYSIS

půdní typy

podzoly

půdní horizonty

huminové kyseliny

fulvokyseliny

chemická struktura

analytické metody

infračervená spektrofotometrie

fyzikální jevy

kvantitativní analýza

absorbance

huminové látky > huminy > humic-like substances > humic-like acids > DRIFT spektra > FTIR-ATR spektra

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Item Description

9 grafů, 2 tabulky

Bibliography

Literatura na s. 372-373 (49 zázn.)