Please use this identifier to cite or link to this item:
https://zone.biblio.laurentian.ca/handle/10219/3875
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | McClenaghan, Neal | - |
dc.date.accessioned | 2022-05-05T13:29:29Z | - |
dc.date.available | 2022-05-05T13:29:29Z | - |
dc.date.issued | 2021-04-29 | - |
dc.identifier.uri | https://zone.biblio.laurentian.ca/handle/10219/3875 | - |
dc.description.abstract | Many environmental risk assessments are based on the total concentration of elements in natural waters/ soils, ignoring that a significant proportion of elements is associated with nanoparticles. TEM analysis of the silicate minerals from a chromitite sample from the Mum and Alice June claims, California confirmed that Cr-rich silicates contained an abundance of chromite nanoparticles. Subsequently, the colloidal fraction of a Cr-rich silicate leaching experiment revealed that the chromite nanoparticles persist through the weathering of their host silicate, confirming that chromite nanoparticles can be a significant form of Cr in the environment. The oxidation of chromite nanoparticles in the presence of Mn-oxides (best known environmental oxidiser of Cr3+) was tested with 6 batch experiments at pH 5 over a 9-month period. These experiments reveal that the dominant redox reaction between chromite nanoparticles and Mn-oxides is the oxidation of Fe2+(rather than Cr3+) by Mn3+. | en_US |
dc.language.iso | en | en_US |
dc.subject | Chromite | en_US |
dc.subject | hausmannite | en_US |
dc.subject | chamosite | en_US |
dc.subject | clinochlore | en_US |
dc.subject | colloid | en_US |
dc.subject | nanoparticles | en_US |
dc.subject | transmission electron microscopy | en_US |
dc.subject | aggregation | en_US |
dc.subject | adsorption | en_US |
dc.title | Occurrence, release and alteration of chromite nanoparticles | en_US |
dc.type | Thesis | en_US |
dc.description.degree | Master of Science (MSc) in Geology | en_US |
dc.publisher.grantor | Laurentian University of Sudbury | en_US |
Appears in Collections: | Geology - Master's Theses |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Occurence, release and alteration of chromite nanoparticles - Final - McClenaghan.pdf | 2.06 MB | Adobe PDF | View/Open |
Items in LU|ZONE|UL are protected by copyright, with all rights reserved, unless otherwise indicated.