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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F18%3APU128093" target="_blank" >RIV/00216305:26310/18:PU128093 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.2289/fchem.2018.00235" target="_blank" >http://dx.doi.org/10.2289/fchem.2018.00235</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2289/fchem.2018.00235" target="_blank" >10.2289/fchem.2018.00235</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

<a href="/cs/project/LO1211" target="_blank" >LO1211: Centrum materiálového výzkumu na FCH VUT v Brně - udržitelnost a rozvoj</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Frontiers in Chemistry

ISSN

2296-2646

e-ISSN

—

Svazek periodika

6

Číslo periodika v rámci svazku

235

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

1-8

Kód UT WoS článku

000437433900001

EID výsledku v databázi Scopus

2-s2.0-85053077488