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A field deployable method for a rapid screening analysis of inorganic arsenic in seaweed
Inorganic arsenic (iAs) in 13 store-bought edible seaweed samples and 34 dried kelp (Laminaria digitata) samples was determined by a newly developed, field-deployable method (FDM) with the aid of a field test kit for arsenic in water. Results from the FDM were compared to results from speciation ana...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Vienna
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5429896/ https://www.ncbi.nlm.nih.gov/pubmed/28572689 http://dx.doi.org/10.1007/s00604-017-2151-1 |
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author | Bralatei, Edi Nekrosiute, Karolina Ronan, Jenny Raab, Andrea McGovern, Evin Stengel, Dagmar B. Krupp, Eva M. Feldmann, Joerg |
author_facet | Bralatei, Edi Nekrosiute, Karolina Ronan, Jenny Raab, Andrea McGovern, Evin Stengel, Dagmar B. Krupp, Eva M. Feldmann, Joerg |
author_sort | Bralatei, Edi |
collection | PubMed |
description | Inorganic arsenic (iAs) in 13 store-bought edible seaweed samples and 34 dried kelp (Laminaria digitata) samples was determined by a newly developed, field-deployable method (FDM) with the aid of a field test kit for arsenic in water. Results from the FDM were compared to results from speciation analysis achieved by using high performance liquid chromatography coupled to inductively coupled plasma mass spectrometry (HPLC-ICP-MS). The FDM consisted of a simple extraction method using diluted HNO(3) to quantitatively extract iAs without decomposing the organoarsenicals to iAs followed by the selective volatilisation of iAs as arsine (AsH(3)) and subsequent chemo-trapping on a filter paper soaked in mercury bromide (HgBr(2)) solution. Method optimization with a sub-set of samples showed 80–94% iAs recovery with the FDM with no matrix effect from organo-arsenic species in the form of dimethylarsinic acid (DMA) on the iAs concentration. The method displayed good reproducibility with an average error of ±19% and validation by HPLC-ICP-MS showed that the results from the FDM were comparable (slope = 1.03, R(2) = 0.70) to those from speciation analysis with no bias. The FDM can be conducted within an hour and the observed limit of quantification was around 0.05 mg kg(−1) (dry weight). This method is well suited for on-site monitoring of iAs in seaweed before it is harvested and can thus be recommended for use as a screening method for iAs in seaweed. [Figure: see text] ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s00604-017-2151-1) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-5429896 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Springer Vienna |
record_format | MEDLINE/PubMed |
spelling | pubmed-54298962017-05-30 A field deployable method for a rapid screening analysis of inorganic arsenic in seaweed Bralatei, Edi Nekrosiute, Karolina Ronan, Jenny Raab, Andrea McGovern, Evin Stengel, Dagmar B. Krupp, Eva M. Feldmann, Joerg Mikrochim Acta Original Paper Inorganic arsenic (iAs) in 13 store-bought edible seaweed samples and 34 dried kelp (Laminaria digitata) samples was determined by a newly developed, field-deployable method (FDM) with the aid of a field test kit for arsenic in water. Results from the FDM were compared to results from speciation analysis achieved by using high performance liquid chromatography coupled to inductively coupled plasma mass spectrometry (HPLC-ICP-MS). The FDM consisted of a simple extraction method using diluted HNO(3) to quantitatively extract iAs without decomposing the organoarsenicals to iAs followed by the selective volatilisation of iAs as arsine (AsH(3)) and subsequent chemo-trapping on a filter paper soaked in mercury bromide (HgBr(2)) solution. Method optimization with a sub-set of samples showed 80–94% iAs recovery with the FDM with no matrix effect from organo-arsenic species in the form of dimethylarsinic acid (DMA) on the iAs concentration. The method displayed good reproducibility with an average error of ±19% and validation by HPLC-ICP-MS showed that the results from the FDM were comparable (slope = 1.03, R(2) = 0.70) to those from speciation analysis with no bias. The FDM can be conducted within an hour and the observed limit of quantification was around 0.05 mg kg(−1) (dry weight). This method is well suited for on-site monitoring of iAs in seaweed before it is harvested and can thus be recommended for use as a screening method for iAs in seaweed. [Figure: see text] ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s00604-017-2151-1) contains supplementary material, which is available to authorized users. Springer Vienna 2017-03-18 2017 /pmc/articles/PMC5429896/ /pubmed/28572689 http://dx.doi.org/10.1007/s00604-017-2151-1 Text en © The Author(s) 2017 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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. |
spellingShingle | Original Paper Bralatei, Edi Nekrosiute, Karolina Ronan, Jenny Raab, Andrea McGovern, Evin Stengel, Dagmar B. Krupp, Eva M. Feldmann, Joerg A field deployable method for a rapid screening analysis of inorganic arsenic in seaweed |
title | A field deployable method for a rapid screening analysis of inorganic arsenic in seaweed |
title_full | A field deployable method for a rapid screening analysis of inorganic arsenic in seaweed |
title_fullStr | A field deployable method for a rapid screening analysis of inorganic arsenic in seaweed |
title_full_unstemmed | A field deployable method for a rapid screening analysis of inorganic arsenic in seaweed |
title_short | A field deployable method for a rapid screening analysis of inorganic arsenic in seaweed |
title_sort | field deployable method for a rapid screening analysis of inorganic arsenic in seaweed |
topic | Original Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5429896/ https://www.ncbi.nlm.nih.gov/pubmed/28572689 http://dx.doi.org/10.1007/s00604-017-2151-1 |
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