Origin of heat-induced structural changes in dissolved organic matter

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F13%3A00394923" target="_blank" >RIV/60077344:_____/13:00394923 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11160/13:10144227

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.chemosphere.2012.09.076" target="_blank" >http://dx.doi.org/10.1016/j.chemosphere.2012.09.076</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.chemosphere.2012.09.076" target="_blank" >10.1016/j.chemosphere.2012.09.076</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Origin of heat-induced structural changes in dissolved organic matter

Popis výsledku v původním jazyce

Humic substances play an important role in many environmental processes such as sequestration and transport of hydrophobic compounds. The supramolecular character of humic substances imparts high flexibility of the aggregates associated with their variable reactivity under different conditions. In this study, heat-induced transitions and character of the hydration shell of sodium salts of humic and fulvic acids originating from various sources were investigated using ultrasonic velocimetry in the temperature interval from 5 to 90 °C. Results clearly showed differences in stability and characteristics of the hydrated states at concentrations above and below 1 g L-1 with the exception of Pahokee peat fulvic acids. It has been concluded that predominantlythe relaxation part of the adiabatic compressibility plays an important role below 1 g L-1 in contrast to both relaxation and intrinsic parts of the compressibility being important at higher concentrations. Dilution brought several tempe

Název v anglickém jazyce

Origin of heat-induced structural changes in dissolved organic matter

Popis výsledku anglicky

Humic substances play an important role in many environmental processes such as sequestration and transport of hydrophobic compounds. The supramolecular character of humic substances imparts high flexibility of the aggregates associated with their variable reactivity under different conditions. In this study, heat-induced transitions and character of the hydration shell of sodium salts of humic and fulvic acids originating from various sources were investigated using ultrasonic velocimetry in the temperature interval from 5 to 90 °C. Results clearly showed differences in stability and characteristics of the hydrated states at concentrations above and below 1 g L-1 with the exception of Pahokee peat fulvic acids. It has been concluded that predominantlythe relaxation part of the adiabatic compressibility plays an important role below 1 g L-1 in contrast to both relaxation and intrinsic parts of the compressibility being important at higher concentrations. Dilution brought several tempe

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DF - Pedologie

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Chemosphere

ISSN

0045-6535

e-ISSN

—

Svazek periodika

90

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

789-795

Kód UT WoS článku

000312618300087

EID výsledku v databázi Scopus

—