Estimation of WHAM7 constants for GaIII, InIII, SbIII and BiIII from linear free energy relationships, and speciation calculations for natural waters
Tipping, Edward ORCID: https://orcid.org/0000-0001-6618-6512; Filella, Montserrat. 2020 Estimation of WHAM7 constants for GaIII, InIII, SbIII and BiIII from linear free energy relationships, and speciation calculations for natural waters. Environmental Chemistry, 17 (2). 140-147. https://doi.org/10.1071/EN19194
Before downloading, please read NORA policies.
|
Text
N526611PP.pdf - Accepted Version Download (1MB) | Preview |
Abstract/Summary
We compiled the equilibrium constants for the interactions of the technology-critical elements (TCEs) GaIII, InIII, SbIII and BiIII with ammonia, fluoride, hydroxyl and ligands with oxygen atoms. We then combined them with predictive equations to estimate parameters for Humic Ion-Binding Model VII, which permits the calculation of metal binding by natural organic matter (fulvic acid, FA, and humic acid, HA). Derived values of the Model VII parameter quantifying the interaction of metal ions with carboxyl-type groups (log KMA) were among the highest estimated so far, as were the values for the parameter (ΔLK2) that quantifies the tendency of the metal ion to interact with softer ligand atoms (N and S). The Windermere Humic Aqueous Model, version 7 (WHAM7), which incorporates Model VII, was then used to estimate the chemical speciation of each TCE element.
Item Type: | Publication - Article |
---|---|
Digital Object Identifier (DOI): | https://doi.org/10.1071/EN19194 |
UKCEH and CEH Sections/Science Areas: | UKCEH Fellows |
ISSN: | 1448-2517 |
Additional Keywords: | antimony, bismuth, fulvic acid, gallium, humic acid, indium, technology-critical elements, Windermere Humic Aqueous Model |
NORA Subject Terms: | Ecology and Environment |
Date made live: | 28 Jan 2020 13:56 +0 (UTC) |
URI: | https://nora.nerc.ac.uk/id/eprint/526611 |
Actions (login required)
View Item |
Document Downloads
Downloads for past 30 days
Downloads per month over past year