Determination of natural organic Fe (III) binding ligand at Pulau Perhentian
The organic ligands concentrations [FeL] ranged between 432.8-900.6 nM and showed conditional stability constants (log K') between 22.68 and 24.63 in the surface waters of the Pulau Perhentian. Dissolved Fe was therefore largely complexed by organic ligands (100%). The organic ligand concentrat...
| Main Authors: | , |
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| Format: | Book Section |
| Language: | English |
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Faculty of Science and Technology, Universiti Kebangsaan Malaysia
2016
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| Online Access: | http://psasir.upm.edu.my/id/eprint/53928/ http://psasir.upm.edu.my/id/eprint/53928/1/Determination%20of%20natural%20organic%20Fe%20%28III%29%20binding%20ligand%20at%20Pulau%20Perhentian.pdf |
| _version_ | 1848852413935517696 |
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| author | Azahar, Nur Imanina Mohamed, Khairul Nizam |
| author_facet | Azahar, Nur Imanina Mohamed, Khairul Nizam |
| author_sort | Azahar, Nur Imanina |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The organic ligands concentrations [FeL] ranged between 432.8-900.6 nM and showed conditional stability constants (log K') between 22.68 and 24.63 in the surface waters of the Pulau Perhentian. Dissolved Fe was therefore largely complexed by organic ligands (100%). The organic ligand concentrations ([FeL]) were always in excess of [dFe] throughout the water column. The ligands are thought to play an important role in keeping Fe in solution and hence regulating Fe availability to organisms. The ratio of [FeL]/[dFe] was used to analyse trends in Fe speciation observed during this study. An enhanced and variable FeL]/[dFe] ratio (1.0-1.2) was determined throughout the water column. These observations indicate the importance of phytoplankton in maintaining the ratio by Fe uptake and ligand production. This observation indicates that the Fe binding ligand sites become occupied and even almost saturated at the study area. |
| first_indexed | 2025-11-15T10:37:41Z |
| format | Book Section |
| id | upm-53928 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:37:41Z |
| publishDate | 2016 |
| publisher | Faculty of Science and Technology, Universiti Kebangsaan Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-539282019-05-15T06:34:40Z http://psasir.upm.edu.my/id/eprint/53928/ Determination of natural organic Fe (III) binding ligand at Pulau Perhentian Azahar, Nur Imanina Mohamed, Khairul Nizam The organic ligands concentrations [FeL] ranged between 432.8-900.6 nM and showed conditional stability constants (log K') between 22.68 and 24.63 in the surface waters of the Pulau Perhentian. Dissolved Fe was therefore largely complexed by organic ligands (100%). The organic ligand concentrations ([FeL]) were always in excess of [dFe] throughout the water column. The ligands are thought to play an important role in keeping Fe in solution and hence regulating Fe availability to organisms. The ratio of [FeL]/[dFe] was used to analyse trends in Fe speciation observed during this study. An enhanced and variable FeL]/[dFe] ratio (1.0-1.2) was determined throughout the water column. These observations indicate the importance of phytoplankton in maintaining the ratio by Fe uptake and ligand production. This observation indicates that the Fe binding ligand sites become occupied and even almost saturated at the study area. Faculty of Science and Technology, Universiti Kebangsaan Malaysia 2016-12 Book Section PeerReviewed text en http://psasir.upm.edu.my/id/eprint/53928/1/Determination%20of%20natural%20organic%20Fe%20%28III%29%20binding%20ligand%20at%20Pulau%20Perhentian.pdf Azahar, Nur Imanina and Mohamed, Khairul Nizam (2016) Determination of natural organic Fe (III) binding ligand at Pulau Perhentian. In: In-house Seminar of Chemical Oceanography. Faculty of Science and Technology, Universiti Kebangsaan Malaysia, pp. 23-34. |
| spellingShingle | Azahar, Nur Imanina Mohamed, Khairul Nizam Determination of natural organic Fe (III) binding ligand at Pulau Perhentian |
| title | Determination of natural organic Fe (III) binding ligand at Pulau Perhentian |
| title_full | Determination of natural organic Fe (III) binding ligand at Pulau Perhentian |
| title_fullStr | Determination of natural organic Fe (III) binding ligand at Pulau Perhentian |
| title_full_unstemmed | Determination of natural organic Fe (III) binding ligand at Pulau Perhentian |
| title_short | Determination of natural organic Fe (III) binding ligand at Pulau Perhentian |
| title_sort | determination of natural organic fe (iii) binding ligand at pulau perhentian |
| url | http://psasir.upm.edu.my/id/eprint/53928/ http://psasir.upm.edu.my/id/eprint/53928/1/Determination%20of%20natural%20organic%20Fe%20%28III%29%20binding%20ligand%20at%20Pulau%20Perhentian.pdf |