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Adegoke O, Daeid NN. Alloyed AuFeZnSe quantum dots@gold nanorod nanocomposite as an ultrasensitive and selective plasmon-amplified fluorescence OFF-ON aptasensor for arsenic (III). J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113755] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Ownsworth E, Selby D, Ottley CJ, Unsworth E, Raab A, Feldmann J, Sproson AD, Kuroda J, Faidutti C, Bücker P. Tracing the natural and anthropogenic influence on the trace elemental chemistry of estuarine macroalgae and the implications for human consumption. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 685:259-272. [PMID: 31176213 DOI: 10.1016/j.scitotenv.2019.05.263] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/16/2019] [Accepted: 05/18/2019] [Indexed: 06/09/2023]
Abstract
Macroalgae (seaweed) has been shown to be an effective environmental indicator. We investigate the trace element chemistry of macroalgae samples from locations along the Firth of Forth and Forth Estuary in Scotland. The overall trend in elemental abundance (Os ≪ Re < Ag < U < Cd < Co < Ni < Pb < Cu < As < Zn ≪ I), and changes along the estuary (seawards: increase As, I, Cd, U, Re, Os; decrease Pb, Cu; mid-estuary peak Zn; based on certain species), are controlled by a number of factors, including: salinity, mixing and macroalgal species differences. Within the same macroalgal species, some elemental abundances (As, I, Pb, Cu, Cd and U) are affected by mixing between freshwater riverine and North Sea marine saltwater. Additional mixing of natural and anthropogenic inputs from the surrounding geology and industry are also observed, affecting Zn, Ni, Co, Re and Os. Macroalgae is also an increasingly popular food, with some species harvested in the Firth of Forth. Iodine (67-5061 ppm), lead (0.047-4.1 ppm) and cadmium (0.006-0.93 ppm) macroalgal abundances are at safe levels for human consumption (WHO limits). However, many samples exceed the American (3 ppm) and Australian (1 ppm) limits for inorganic arsenic in macroalgae, with values ranging 0-67 ppm. In most of the samples, soaking and cooking the macroalgae reduced the inorganic arsenic content to within the American and Australian limits. However, this has further implications if the macroalgae is used to cook soups (e.g., Dashi), as the leached elements become a significant component of the soup.
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Affiliation(s)
- Emma Ownsworth
- Department of Earth Sciences, Durham University, Durham, England DH1 3LE, United Kingdom of Great Britain and Northern Ireland.
| | - David Selby
- Department of Earth Sciences, Durham University, Durham, England DH1 3LE, United Kingdom of Great Britain and Northern Ireland; State Key Laboratory of Geological Processes and Mineral Resources, School of Earth Resources, China University of Geosciences, Wuhan, Hubei Province 430074, China
| | - Christopher J Ottley
- Department of Earth Sciences, Durham University, Durham, England DH1 3LE, United Kingdom of Great Britain and Northern Ireland
| | - Emily Unsworth
- Department of Earth Sciences, Durham University, Durham, England DH1 3LE, United Kingdom of Great Britain and Northern Ireland
| | - Andrea Raab
- Department of Chemistry, University of Aberdeen, Aberdeen, Scotland AB24 3UE, United Kingdom of Great Britain and Northern Ireland
| | - Joerg Feldmann
- Department of Chemistry, University of Aberdeen, Aberdeen, Scotland AB24 3UE, United Kingdom of Great Britain and Northern Ireland
| | - Adam D Sproson
- Department of Earth Sciences, Durham University, Durham, England DH1 3LE, United Kingdom of Great Britain and Northern Ireland; Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa 275-8564, Japan
| | - Junichiro Kuroda
- Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa 275-8564, Japan
| | - Camilla Faidutti
- Department of Chemistry, University of Aberdeen, Aberdeen, Scotland AB24 3UE, United Kingdom of Great Britain and Northern Ireland
| | - Patrick Bücker
- Department of Chemistry, University of Aberdeen, Aberdeen, Scotland AB24 3UE, United Kingdom of Great Britain and Northern Ireland
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Zhao Z, Li C, Wu H. Reduced graphene oxide nanosheets modified with plasmonic gold-based hybrid nanostructures and with magnetite (Fe 3O 4) nanoparticles for cyclic voltammetric determination of arsenic(III). Mikrochim Acta 2019; 186:226. [PMID: 30848370 DOI: 10.1007/s00604-019-3328-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Accepted: 02/16/2019] [Indexed: 11/24/2022]
Abstract
The authors have fabricated reduced graphene oxide nanosheets (rGO) supported with Fe3O4 nanoparticles and Ag/Au hollow nanoshells. The material was placed on a glassy carbon electrode which is shown to enable highly sensitive determination of As(III) which is first preconcentrated from solution at a potential of -0.35 V (versus Ag/AgCl) for 100 s. The electrode, typically operated at a working potential as low as 0.06 V, has a linear response in the 0.1 to 20 ppb As(III) concentration range and a 0.01 ppb detection limit. The electrochemical sensitivity is 52 μA ppb-1. The high sensitivity is assumed to be the result of various synergistic effects. The method was applied to ultratrace (0.1 ppt) determination of As(III) in real water samples. Graphical abstract The hybrid displays a wide linear response in the 0.1 to 20 ppb As(III) concentration range and a 0.01 ppb detection limit. The high sensitivity is attributed to various synergistic effects. The method was applied to ultratrace determination of As(III) in real water samples.
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Affiliation(s)
- Zhenlu Zhao
- School of Material Science and Engineering, University of Jinan, Jinan, 250022, Shandong, China. .,Department of Bionano Engineering, Hanyang University, Ansan, 426-791, South Korea.
| | - Chuanping Li
- State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
| | - Haoxi Wu
- Institute of Materials, China Academy of Engineering Physics, PO Box 9071-11, Mianyang, 621907, Sichuan, China
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Selective and fast screening method for inorganic arsenic in seaweed using hydride generation inductively coupled plasma mass spectrometry (HG-ICPMS). Microchem J 2019. [DOI: 10.1016/j.microc.2018.08.055] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Marschner K, Pétursdóttir ÁH, Bücker P, Raab A, Feldmann J, Mester Z, Matoušek T, Musil S. Validation and inter-laboratory study of selective hydride generation for fast screening of inorganic arsenic in seafood. Anal Chim Acta 2018; 1049:20-28. [PMID: 30612652 DOI: 10.1016/j.aca.2018.11.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 11/09/2018] [Accepted: 11/12/2018] [Indexed: 12/15/2022]
Abstract
It is advisable to monitor and regulate inorganic arsenic (iAs) in food and feedstuff. This work describes an update and validation of a method of selective hydride generation (HG) with inductively coupled plasma mass spectrometry (ICP-MS) for high-throughput screening of iAs content in seafood samples after microwave-assisted extraction with diluted nitric acid and hydrogen peroxide. High concentration of HCl (8 M) for HG along with hydrogen peroxide in samples of a same concentration as used for extraction leads to a selective conversion of iAs to volatile arsine that is released and transported to the detector. A minor contribution from methylarsonate (≈20% to iAs) was found, while HG from dimethylarsinate, trimethylarsine oxide is substantially suppressed (less than 1% to iAs). Methodology was applied to Certified Reference Materials (CRMs) TORT-3, DORM-3, DORM-4, DOLT-4, DOLT-5, PRON-1, SQID-1 and ERM-CE278k, in some of them iAs has been determined for the first time, and to various seaweed samples from a local store. The results were always compared with a reference method and selectivity of iAs determination was evaluated. An inter-laboratory reproducibility was tested by comparative analyses of six fish and four seaweed samples in three European laboratories, with good agreement of the results. The method of HG-ICP-MS is sensitive (limit of detection 2 μg kg-1 iAs), well suited for screening of large number of samples and selective at iAs concentration levels at which maximum limits are expected to be set into EU legislation for marine samples.
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Affiliation(s)
- Karel Marschner
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Veveří 97, 602 00, Brno, Czech Republic
| | | | - Patrick Bücker
- TESLA-Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen, AB24 3UE, Scotland, UK
| | - Andrea Raab
- TESLA-Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen, AB24 3UE, Scotland, UK
| | - Jörg Feldmann
- TESLA-Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen, AB24 3UE, Scotland, UK
| | - Zoltán Mester
- National Research Council of Canada, 1200 Montreal Road, Ottawa, Ontario, K1A 0R6, Canada
| | - Tomáš Matoušek
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Veveří 97, 602 00, Brno, Czech Republic
| | - Stanislav Musil
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Veveří 97, 602 00, Brno, Czech Republic.
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Mlangeni AT, Vecchi V, Norton GJ, Raab A, Krupp EM, Feldmann J. Comparison of on-site field measured inorganic arsenic in rice with laboratory measurements using a field deployable method: Method validation. Food Chem 2018; 263:180-185. [DOI: 10.1016/j.foodchem.2018.04.133] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 04/17/2018] [Accepted: 04/28/2018] [Indexed: 11/26/2022]
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A Comprehensive Review on Various Analytical Methods for the Determination of Inorganic and Organic Arsenic in Environmental Samples. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/978-981-10-7332-8_2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Ronan JM, Stengel DB, Raab A, Feldmann J, O'Hea L, Bralatei E, McGovern E. High proportions of inorganic arsenic in Laminaria digitata but not in Ascophyllum nodosum samples from Ireland. CHEMOSPHERE 2017; 186:17-23. [PMID: 28759813 DOI: 10.1016/j.chemosphere.2017.07.076] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 06/10/2017] [Accepted: 07/15/2017] [Indexed: 06/07/2023]
Abstract
Seaweed can accumulate inorganic arsenic (iAs) from seawater as hydrogen arsenate (HAsO42-) in place of the phosphate anion (HPO42-). While it is rapidly metabolised to organoarsenic species, predominantly arsenosugars and arsenolipids, iAs may be present in seaweed biomass and this poses a potential health concern for consumers of seaweed products. Here, the distribution of total (AsTOT) and iAs was determined in thallus parts of the kelp Laminaria digitata and the intertidal fucoid Ascophyllum nodosum (both Phaeophyceae) using inductively-coupled plasma mass spectrometry (ICP-MS) and high performance liquid chromatography - ICP-MS (HPLC-ICP-MS). AsTOT ranged from 36 to 131 mg kg-1 dry weight (DW) in L. digitata, and from 38 to 111 mg kg-1 DW in A. nodosum, with no statistically significant differences between different thallus parts. iAs was detected in all A. nodosum samples, comprising less than 1% of the AsTOT content. Concentrations of iAs in L. digitata were significantly higher, ranging from 2.2 to 87 mg kg-1, increasing through the thallus from the stipe to the decaying distal blades. iAs comprised more than 50% of AsTOT in the middle to decaying distal blades. This finding has potential implications for harvesting, processing and use of Laminaria digitata in agri-, food and health applications.
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Affiliation(s)
- Jenny M Ronan
- Marine Institute, Rinville, Oranmore, Galway, Ireland
| | - Dagmar B Stengel
- Botany and Plant Science, School of Natural Sciences, Ryan Institute for Environmental, Marine and Energy Research, National University of Ireland Galway, Galway, Ireland
| | - Andrea Raab
- TESLA Trace Element Speciation Laboratory, University of Aberdeen, Aberdeen, Scotland, United Kingdom
| | - Jörg Feldmann
- TESLA Trace Element Speciation Laboratory, University of Aberdeen, Aberdeen, Scotland, United Kingdom
| | - Linda O'Hea
- Marine Institute, Rinville, Oranmore, Galway, Ireland
| | - Edi Bralatei
- TESLA Trace Element Speciation Laboratory, University of Aberdeen, Aberdeen, Scotland, United Kingdom
| | - Evin McGovern
- Marine Institute, Rinville, Oranmore, Galway, Ireland.
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Importance of ICPMS for speciation analysis is changing: future trends for targeted and non-targeted element speciation analysis. Anal Bioanal Chem 2017; 410:661-667. [PMID: 28735451 PMCID: PMC5775347 DOI: 10.1007/s00216-017-0502-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 06/10/2017] [Accepted: 06/27/2017] [Indexed: 01/03/2023]
Abstract
This article is aimed at researchers interested in organic molecules which contain a heteroatom but who have never considered using inductively coupled plasma mass spectrometry (ICPMS) or who have used ICPMS for years and developed numerous methods for analysis of target elemental species. We try to illustrate (1) that ICPMS has been very useful for speciation analysis of metal(loid) target species and that there is now a trend to replace the costly detector with cheaper detection systems for routine target analysis, and (2) that ICPMS has been used and will be used even more in the future for non-targeted analysis of elements which are not normally associated with ICPMS analysis, such as non-metals such as sulfur, phosphorus, chlorine and fluorine. Starting with HPLC-ICPMS for non-targeted analysis of heteroatom containing molecules, once target molecule is identified alternative detectors can be used for routine measurements ![]()
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