Dissolved Fe III speciation at tropical coastal water (S?) : in case of Northeast monsoon effect
The distribution of total dissolved iron (dFe) and natural organic Fe (III) binding ligands (FeL) were determined in the east coast of Peninsular Malaysia. This study was carried out during the pre- (October 2015) and post- (April 2016) of Northeast Monsoon. Seawater samples were analyzed by using a...
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2021
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my.upm.eprints.967602022-12-01T04:38:45Z http://psasir.upm.edu.my/id/eprint/96760/ Dissolved Fe III speciation at tropical coastal water (S?) : in case of Northeast monsoon effect Mohamed, Khairul Nizam Ramjam, Nur Jannati Azahar, Nur Imanina The distribution of total dissolved iron (dFe) and natural organic Fe (III) binding ligands (FeL) were determined in the east coast of Peninsular Malaysia. This study was carried out during the pre- (October 2015) and post- (April 2016) of Northeast Monsoon. Seawater samples were analyzed by using a competitive ligand equilibration–adsorptive cathodic stripping voltammetry method. The [dFe] in October 2015 (3.0–25.0 nM) was lower than in April 2016 (40.4–940.4 nM) due to a longer Northeast Monsoon 2015/2016 period. We recorded a similar distribution of [FeL] to those [dFe]. In October 2015, its concentration was 4.2-25.8 nM, which was lower than in April 2016 (43.3-948.6 nM). However, the speciation data shows that the distribution of [FeL]/[dFe] ratio and Log K value were slightly similar during the two seasons. This indicated that [FeL] was always in excess of [dFe] and the presence of high stability of organic ligands class (L1: Log K13). Our present results suggested that the Northeast monsoon system results to the ligand saturation state in the water column, especially during the post-monsoon season. These organic ligands play an important role in Fe biogeochemistry cycle by binding any input of Fe (III) and remain it in the water column. Penerbit UMT 2021 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/96760/1/ABSTRACT.pdf Mohamed, Khairul Nizam and Ramjam, Nur Jannati and Azahar, Nur Imanina (2021) Dissolved Fe III speciation at tropical coastal water (S?) : in case of Northeast monsoon effect. Journal of Sustainability Science and Management, 16 (8). 256 - 267. ISSN 1823-8556; ESSN: 2672-7226 https://jssm.umt.edu.my/ 10.46754/jssm.2021.12.019 |
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The distribution of total dissolved iron (dFe) and natural organic Fe (III) binding ligands (FeL) were determined in the east coast of Peninsular Malaysia. This study was carried out during the pre- (October 2015) and post- (April 2016) of Northeast Monsoon. Seawater samples were analyzed by using a competitive ligand equilibration–adsorptive cathodic stripping voltammetry method. The [dFe] in October 2015 (3.0–25.0 nM) was lower than in April 2016 (40.4–940.4 nM) due to a longer Northeast Monsoon 2015/2016 period. We recorded a similar distribution of [FeL] to those [dFe]. In October 2015, its concentration was 4.2-25.8 nM, which was lower than in April 2016 (43.3-948.6 nM). However, the speciation data shows that the distribution of [FeL]/[dFe] ratio and Log K value were slightly similar during the two seasons. This indicated that [FeL] was always in excess of [dFe] and the presence of high stability of organic ligands class (L1: Log K13). Our present results suggested that the Northeast monsoon system results to the ligand saturation state in the water column, especially during the post-monsoon season. These organic ligands play an important role in Fe biogeochemistry cycle by binding any input of Fe (III) and remain it in the water column. |
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Article |
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Mohamed, Khairul Nizam Ramjam, Nur Jannati Azahar, Nur Imanina |
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Mohamed, Khairul Nizam Ramjam, Nur Jannati Azahar, Nur Imanina Dissolved Fe III speciation at tropical coastal water (S?) : in case of Northeast monsoon effect |
author_facet |
Mohamed, Khairul Nizam Ramjam, Nur Jannati Azahar, Nur Imanina |
author_sort |
Mohamed, Khairul Nizam |
title |
Dissolved Fe III speciation at tropical coastal water (S?) : in case of Northeast monsoon effect |
title_short |
Dissolved Fe III speciation at tropical coastal water (S?) : in case of Northeast monsoon effect |
title_full |
Dissolved Fe III speciation at tropical coastal water (S?) : in case of Northeast monsoon effect |
title_fullStr |
Dissolved Fe III speciation at tropical coastal water (S?) : in case of Northeast monsoon effect |
title_full_unstemmed |
Dissolved Fe III speciation at tropical coastal water (S?) : in case of Northeast monsoon effect |
title_sort |
dissolved fe iii speciation at tropical coastal water (s?) : in case of northeast monsoon effect |
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Penerbit UMT |
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2021 |
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http://psasir.upm.edu.my/id/eprint/96760/1/ABSTRACT.pdf http://psasir.upm.edu.my/id/eprint/96760/ https://jssm.umt.edu.my/ |
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