Cadmium Isotope Fractionation during Complexation with Humic Acid
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F21%3A85769" target="_blank" >RIV/60460709:41330/21:85769 - isvavai.cz</a>
Výsledek na webu
<a href="https://pubs.acs.org/doi/abs/10.1021/acs.est.1c00646" target="_blank" >https://pubs.acs.org/doi/abs/10.1021/acs.est.1c00646</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.est.1c00646" target="_blank" >10.1021/acs.est.1c00646</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Cadmium Isotope Fractionation during Complexation with Humic Acid
Popis výsledku v původním jazyce
Cadmium (Cd) isotopes are known to fractionate during complexation with various environmentally relevant surfaces and ligands. Our results, which were obtained using (i) batch experiments at different Cd concentrations, ionic strengths, and pH values, (ii) modeling, and (iii) infrared and X-ray absorption spectroscopies, highlight the preferential enrichment of light Cd isotopes bound to humic acid (HA), leaving the heavier Cd pool preferentially in solution (Delta Cd-114/110(HA-Cd(aq)) of -0,15 +/- 0,01%). At high ionic strengths, Cd isotope fractionation mainly depends on its complexation with carboxylic sites. Outer-sphere complexation occurs at equilibrium together with inner-sphere complexation as well as with the change of the first Cd coordination and its hydration complexes in solution. At low ionic strengths, nonspecific Cd binding induced by electrostatic attractions plays a dominant role and promotes Cd isotope fractionation during complexation. This significant outcome elucidates the mech
Název v anglickém jazyce
Cadmium Isotope Fractionation during Complexation with Humic Acid
Popis výsledku anglicky
Cadmium (Cd) isotopes are known to fractionate during complexation with various environmentally relevant surfaces and ligands. Our results, which were obtained using (i) batch experiments at different Cd concentrations, ionic strengths, and pH values, (ii) modeling, and (iii) infrared and X-ray absorption spectroscopies, highlight the preferential enrichment of light Cd isotopes bound to humic acid (HA), leaving the heavier Cd pool preferentially in solution (Delta Cd-114/110(HA-Cd(aq)) of -0,15 +/- 0,01%). At high ionic strengths, Cd isotope fractionation mainly depends on its complexation with carboxylic sites. Outer-sphere complexation occurs at equilibrium together with inner-sphere complexation as well as with the change of the first Cd coordination and its hydration complexes in solution. At low ionic strengths, nonspecific Cd binding induced by electrostatic attractions plays a dominant role and promotes Cd isotope fractionation during complexation. This significant outcome elucidates the mech
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10511 - Environmental sciences (social aspects to be 5.7)
Návaznosti výsledku
Projekt
<a href="/cs/project/GA18-07585S" target="_blank" >GA18-07585S: Izotopová frakcionace jako nástroj pro identifikaci sorpčních mechanizmů kadmia a zinku v půdách</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Environmental Science & Technology
ISSN
0013-936X
e-ISSN
1520-5851
Svazek periodika
2021
Číslo periodika v rámci svazku
55
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
15
Strana od-do
7430-7444
Kód UT WoS článku
000659374200024
EID výsledku v databázi Scopus
2-s2.0-85106493538