Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Bralatei, Edi, Nekrosiute, Karolina, Ronan, Jenny, Raab, Andrea, McGovern, Evin, Stengel, Dagmar B., Krupp, Eva M., Feldmann, Joerg
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Vienna 2017
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
_version_ 1783236121678839808
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
work_keys_str_mv AT bralateiedi afielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed
AT nekrosiutekarolina afielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed
AT ronanjenny afielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed
AT raabandrea afielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed
AT mcgovernevin afielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed
AT stengeldagmarb afielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed
AT kruppevam afielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed
AT feldmannjoerg afielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed
AT bralateiedi fielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed
AT nekrosiutekarolina fielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed
AT ronanjenny fielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed
AT raabandrea fielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed
AT mcgovernevin fielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed
AT stengeldagmarb fielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed
AT kruppevam fielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed
AT feldmannjoerg fielddeployablemethodforarapidscreeninganalysisofinorganicarsenicinseaweed