Detail publikačního výsledku

Size and Charge Evaluation of Standard Humic and Fulvic Acids as Crucial Factors to Determine Their Environmental Behavior and Impact

KLUČÁKOVÁ, M.

Original Title

Size and Charge Evaluation of Standard Humic and Fulvic Acids as Crucial Factors to Determine Their Environmental Behavior and Impact

English Title

Size and Charge Evaluation of Standard Humic and Fulvic Acids as Crucial Factors to Determine Their Environmental Behavior and Impact

Type

WoS Article

Original Abstract

In this work, the size and charge of humic and fulvic standards purchased from the International Humic Substances Society are presented and discussed. Since humic acids are only partially soluble in water, their alkaline solutions were used in this study. Fulvic acids were analyzed both in water and NaOH solution. The intensity, volume, and number particle size distribution were obtained by means of dynamic light scattering. It was found that both particle size distribution and zeta potential are influenced by pH and concentration. The average diameter derived from the intensity distribution was determined to by an inadequate indicator of particle sizes of humic substances. Two or three different size fractions were detected in the studied systems. The colloidal stability was higher for humic acids. In the case of fulvic acids, the colloidal stability increased with increasing pH as a result of the dissociation of their functional groups.

English abstract

In this work, the size and charge of humic and fulvic standards purchased from the International Humic Substances Society are presented and discussed. Since humic acids are only partially soluble in water, their alkaline solutions were used in this study. Fulvic acids were analyzed both in water and NaOH solution. The intensity, volume, and number particle size distribution were obtained by means of dynamic light scattering. It was found that both particle size distribution and zeta potential are influenced by pH and concentration. The average diameter derived from the intensity distribution was determined to by an inadequate indicator of particle sizes of humic substances. Two or three different size fractions were detected in the studied systems. The colloidal stability was higher for humic acids. In the case of fulvic acids, the colloidal stability increased with increasing pH as a result of the dissociation of their functional groups.

Keywords

Humic acids, Fulvic acids, Solubility, Stability, Particle size, Charge

Key words in English

Humic acids, Fulvic acids, Solubility, Stability, Particle size, Charge

Authors

KLUČÁKOVÁ, M.

RIV year

2019

Released

05.07.2018

Publisher

Frontiers

ISBN

2296-2646

Periodical

Frontiers in Chemistry

Volume

6

Number

235

State

Swiss Confederation

Pages from

1

Pages to

8

Pages count

8

Full text in the Digital Library

http://hdl.handle.net/

BibTex

@article{BUT147980,
  author="Martina {Klučáková}",
  title="Size and Charge Evaluation of Standard Humic and Fulvic Acids as Crucial Factors to Determine Their Environmental Behavior and Impact",
  journal="Frontiers in Chemistry",
  year="2018",
  volume="6",
  number="235",
  pages="1--8",
  doi="10.2289/fchem.2018.00235",
  issn="2296-2646"
}