Speciation determination of iron and its spatial and seasonal distribution in coastal river

In this study, the speciation of iron (Fe), including total Fe (TFe) and acidified dissolved Fe (ADFe), was assessed by fast cathodic absorption stripping voltammetry, using a gold electrode and 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) as a novel complexing agent for Fe. The validi...

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Autores principales: Zhu, Yun, Hu, Xueping, Pan, Dawei, Han, Haitao, Lin, Mingyue, Lu, Yan, Wang, Chenchen, Zhu, Rilong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5803190/
https://www.ncbi.nlm.nih.gov/pubmed/29416105
http://dx.doi.org/10.1038/s41598-018-20991-0
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author Zhu, Yun
Hu, Xueping
Pan, Dawei
Han, Haitao
Lin, Mingyue
Lu, Yan
Wang, Chenchen
Zhu, Rilong
author_facet Zhu, Yun
Hu, Xueping
Pan, Dawei
Han, Haitao
Lin, Mingyue
Lu, Yan
Wang, Chenchen
Zhu, Rilong
author_sort Zhu, Yun
collection PubMed
description In this study, the speciation of iron (Fe), including total Fe (TFe) and acidified dissolved Fe (ADFe), was assessed by fast cathodic absorption stripping voltammetry, using a gold electrode and 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) as a novel complexing agent for Fe. The validity and accuracy of this method were compared with the standard spectrophotometry and tested by the standard samples. Under optimized conditions, the Fe response was linear within the range of 0.01 to 1 μM with a detection limit of 1.2 nM. To further validate this method, the variation in concentrations of TFe and ADFe were investigated at twelve sampling stations in a local coastal river, in both the dry and wet season. Additionally, to further understand the interaction between Fe and environmental factors, the relationships between the concentration of Fe species and dissolved oxygen (DO) and salinity were also discussed.
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spelling pubmed-58031902018-02-14 Speciation determination of iron and its spatial and seasonal distribution in coastal river Zhu, Yun Hu, Xueping Pan, Dawei Han, Haitao Lin, Mingyue Lu, Yan Wang, Chenchen Zhu, Rilong Sci Rep Article In this study, the speciation of iron (Fe), including total Fe (TFe) and acidified dissolved Fe (ADFe), was assessed by fast cathodic absorption stripping voltammetry, using a gold electrode and 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) as a novel complexing agent for Fe. The validity and accuracy of this method were compared with the standard spectrophotometry and tested by the standard samples. Under optimized conditions, the Fe response was linear within the range of 0.01 to 1 μM with a detection limit of 1.2 nM. To further validate this method, the variation in concentrations of TFe and ADFe were investigated at twelve sampling stations in a local coastal river, in both the dry and wet season. Additionally, to further understand the interaction between Fe and environmental factors, the relationships between the concentration of Fe species and dissolved oxygen (DO) and salinity were also discussed. Nature Publishing Group UK 2018-02-07 /pmc/articles/PMC5803190/ /pubmed/29416105 http://dx.doi.org/10.1038/s41598-018-20991-0 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Zhu, Yun
Hu, Xueping
Pan, Dawei
Han, Haitao
Lin, Mingyue
Lu, Yan
Wang, Chenchen
Zhu, Rilong
Speciation determination of iron and its spatial and seasonal distribution in coastal river
title Speciation determination of iron and its spatial and seasonal distribution in coastal river
title_full Speciation determination of iron and its spatial and seasonal distribution in coastal river
title_fullStr Speciation determination of iron and its spatial and seasonal distribution in coastal river
title_full_unstemmed Speciation determination of iron and its spatial and seasonal distribution in coastal river
title_short Speciation determination of iron and its spatial and seasonal distribution in coastal river
title_sort speciation determination of iron and its spatial and seasonal distribution in coastal river
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5803190/
https://www.ncbi.nlm.nih.gov/pubmed/29416105
http://dx.doi.org/10.1038/s41598-018-20991-0
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