Cadmium Isotope Fractionation during Complexation with Humic Acid
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Cadmium Isotope Fractionation during Complexation with Humic Acid
Original language description
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
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10511 - Environmental sciences (social aspects to be 5.7)
Result continuities
Project
<a href="/en/project/GA18-07585S" target="_blank" >GA18-07585S: Isotope fractionation as a tool for identifying cadmium and zinc sorption mechanisms in soils</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Environmental Science & Technology
ISSN
0013-936X
e-ISSN
1520-5851
Volume of the periodical
2021
Issue of the periodical within the volume
55
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
7430-7444
UT code for WoS article
000659374200024
EID of the result in the Scopus database
2-s2.0-85106493538