On-line monitoring of aqueous base metal solutions with transmittance spectrophotometry
Transmittance spectrophotometry was used to monitor copper, cobalt and zinc in solution in laboratory experiments. The samples simulated plant conditions encountered on the Skorpion zinc mine in Namibia and were prepared using a simplex centroid mixture design. Principal component, partial least squ...
| Main Authors: | , |
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| Format: | Journal Article |
| Published: |
Elsevier
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/39993 |
| _version_ | 1848755745333444608 |
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| author | Phiri, M. Aldrich, Chris |
| author_facet | Phiri, M. Aldrich, Chris |
| author_sort | Phiri, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Transmittance spectrophotometry was used to monitor copper, cobalt and zinc in solution in laboratory experiments. The samples simulated plant conditions encountered on the Skorpion zinc mine in Namibia and were prepared using a simplex centroid mixture design. Principal component, partial least squares and support vector regression models were calibrated from visible and near infrared absorption spectra. All models could accurately estimate the concentrations of all the metals in solution. Although these models were affected by nickel contamination, the Cu models were less sensitive to this contamination than the Co and Zn models. Likewise, elevated temperatures led to degradation of the calibrated models, particularly the Zn models. The effects of these conditions could be visualized by a linear discriminant score plot of the spectral data. |
| first_indexed | 2025-11-14T09:01:11Z |
| format | Journal Article |
| id | curtin-20.500.11937-39993 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:01:11Z |
| publishDate | 2014 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-399932017-09-13T15:08:56Z On-line monitoring of aqueous base metal solutions with transmittance spectrophotometry Phiri, M. Aldrich, Chris Transmittance spectrophotometry was used to monitor copper, cobalt and zinc in solution in laboratory experiments. The samples simulated plant conditions encountered on the Skorpion zinc mine in Namibia and were prepared using a simplex centroid mixture design. Principal component, partial least squares and support vector regression models were calibrated from visible and near infrared absorption spectra. All models could accurately estimate the concentrations of all the metals in solution. Although these models were affected by nickel contamination, the Cu models were less sensitive to this contamination than the Co and Zn models. Likewise, elevated temperatures led to degradation of the calibrated models, particularly the Zn models. The effects of these conditions could be visualized by a linear discriminant score plot of the spectral data. 2014 Journal Article http://hdl.handle.net/20.500.11937/39993 10.1016/j.mineng.2014.02.011 Elsevier fulltext |
| spellingShingle | Phiri, M. Aldrich, Chris On-line monitoring of aqueous base metal solutions with transmittance spectrophotometry |
| title | On-line monitoring of aqueous base metal solutions with transmittance spectrophotometry |
| title_full | On-line monitoring of aqueous base metal solutions with transmittance spectrophotometry |
| title_fullStr | On-line monitoring of aqueous base metal solutions with transmittance spectrophotometry |
| title_full_unstemmed | On-line monitoring of aqueous base metal solutions with transmittance spectrophotometry |
| title_short | On-line monitoring of aqueous base metal solutions with transmittance spectrophotometry |
| title_sort | on-line monitoring of aqueous base metal solutions with transmittance spectrophotometry |
| url | http://hdl.handle.net/20.500.11937/39993 |