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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...

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Main Authors: Azahar, Nur Imanina, Mohamed, Khairul Nizam
Format: Book Section
Language:English
Published: Faculty of Science and Technology, Universiti Kebangsaan Malaysia 2016
Online Access:http://psasir.upm.edu.my/id/eprint/53928/1/Determination%20of%20natural%20organic%20Fe%20%28III%29%20binding%20ligand%20at%20Pulau%20Perhentian.pdf
http://psasir.upm.edu.my/id/eprint/53928/
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spelling my.upm.eprints.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.
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
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.
format Book Section
author Azahar, Nur Imanina
Mohamed, Khairul Nizam
spellingShingle Azahar, Nur Imanina
Mohamed, Khairul Nizam
Determination of natural organic Fe (III) binding ligand at Pulau Perhentian
author_facet Azahar, Nur Imanina
Mohamed, Khairul Nizam
author_sort Azahar, Nur Imanina
title 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_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_sort determination of natural organic fe (iii) binding ligand at pulau perhentian
publisher Faculty of Science and Technology, Universiti Kebangsaan Malaysia
publishDate 2016
url http://psasir.upm.edu.my/id/eprint/53928/1/Determination%20of%20natural%20organic%20Fe%20%28III%29%20binding%20ligand%20at%20Pulau%20Perhentian.pdf
http://psasir.upm.edu.my/id/eprint/53928/
_version_ 1643835526851067904
score 13.211869

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