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Lancaster ST, Peniche G, Alzahrani A, Blanz M, Newton J, Taggart MA, Corns WT, Krupp EM, Feldmann J. Mercury speciation in Scottish raptors reveals high proportions of inorganic mercury in Scottish golden eagles (Aquila chrysaetos): Potential occurrence of mercury selenide nanoparticles. Sci Total Environ 2022; 829:154557. [PMID: 35302012 DOI: 10.1016/j.scitotenv.2022.154557] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/31/2022] [Accepted: 03/10/2022] [Indexed: 06/14/2023]
Abstract
Knowledge of the uptake and fate of mercury (Hg) compounds in biota is important in understanding the global cycling of Hg and its transfer pathways through food chains. In this study, we analysed total mercury (T-Hg) and methylmercury (MeHg) concentrations in 117 livers of Scottish birds of prey that were found across Scotland and submitted for post-mortem examination through the Raptor Health Scotland project between 2009 and 2019. Statistical comparisons focussed on six species (barn owl, Tyto alba; Eurasian common buzzard, Buteo buteo; golden eagle, Aquila chrysaetos; hen harrier, Circus cyaneus; Eurasian sparrowhawk, Accipiter nisus; and tawny owl, Strix aluco) and showed that golden eagles had a statistically lower fraction of MeHg compared to other raptor species. Further investigation using stable carbon and stable nitrogen isotope ratio measurements carried out for the golden eagles (n = 15) indicated that the increased presence of inorganic mercury (iHg) correlated with a marine influence on the primarily terrestrial diet. Additional bioimaging (n = 1) with laser ablation - inductively coupled plasma - mass spectrometry indicated the co-location of Hg and selenium (Se) within the liver tissue and transmission electron microscopy showed evidence of nanoparticles within the range of 10-20 nm. Further analysis using single particle - inductively coupled plasma - mass spectrometry (n = 4) confirmed the presence of Hg nanoparticles. Together, the evidence suggests the presence of mercury selenide (HgSe) nanoparticles in the liver of some golden eagles that, to our knowledge, has never been directly observed in terrestrial birds of prey. This study points to two alternative hypotheses: these golden eagles may be efficient at breaking down MeHg and form HgSe nanoparticles as a detoxification mechanism (as previously observed in cetaceans), or some golden eagles with elevated iHg may have accumulated these nanoparticles by foraging on stranded cetaceans or seabirds.
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Affiliation(s)
- Shaun T Lancaster
- Trace Element Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, UK; PS Analytical, Crayfields Industrial Estate, Main Road, Orpington, Kent BR5 3HP, UK; Department of General, Analytical and Physical Chemistry, Chair of General and Analytical Chemistry, Montanuniversität Leoben, Franz Josef-Strasse 18, 8700 Leoben, Austria.
| | - Gabriela Peniche
- The Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush Campus, Midlothian, Edinburgh, EH25 9RG, UK
| | - Ali Alzahrani
- Trace Element Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, UK
| | - Magdalena Blanz
- Trace Element Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, UK; Archaeology Institute, University of the Highlands and Islands, Orkney College UHI, Kirkwall, Orkney, KW15 1LX, Scotland, UK
| | - Jason Newton
- National Environmental Isotope Facility, Scottish Universities Environmental Research Centre (SUERC), East Kilbride, G75 0QF, UK
| | - Mark A Taggart
- The Environmental Research Institute (ERI), University of Highlands and Islands, Castle St, Thurso KW14 7JD, UK
| | - Warren T Corns
- PS Analytical, Crayfields Industrial Estate, Main Road, Orpington, Kent BR5 3HP, UK
| | - Eva M Krupp
- Trace Element Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, UK
| | - Jörg Feldmann
- Trace Element Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, UK; TESLA - Analytical Chemistry, Institute of Chemistry, University of Graz, Universitaetsplatz 1, 8010 Graz, Austria
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Matos WO, da Silva FLF, Sinaviwat S, Menzies EJ, Raab A, Krupp EM, Feldmann J. Wild shrimp have an order of magnitude higher arsenic concentrations than farmed shrimp from Brazil illustrating the need for a regulation based on inorganic arsenic. J Trace Elem Med Biol 2022; 71:126968. [PMID: 35259617 DOI: 10.1016/j.jtemb.2022.126968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/22/2022] [Accepted: 02/25/2022] [Indexed: 10/19/2022]
Abstract
BACKGROUND Shrimp is a worldwide food commodity, it is a source of several nutrients and vitamins; however, this food is one of the major sources of arsenic for humans. Legislation around the world set limits for the concentration of this element in crustaceans but is mainly concerned with total analysis. Although, arsenic species have different toxicities and total analysis could be ineffective for making decisions about food security. METHODS Samples of wild (Farfantepenaeus brasiliensis) and farmed shrimps (Litopenaeus vannamei) from NE Brazil were fractionated in subsamples of carapace, muscle tissue and viscera. The whole shrimp as well as the animal tissue fractions were decomposed using microwave digestion and total arsenic was analyzed by mass spectrometry inductively coupled plasm (ICP-MS). The water-soluble arsenic species were extracted, and the extract was carried for speciation analysis using HPLC-ICP-MS with an anionic and cationic column. RESULTS Total As in wild shrimp samples exceeded Brazilian and USA food legislation by one order of magnitude, with concentrations of 11.5 ± 0.5 mg kg-1, while farmed shrimp had significantly lower total arsenic levels (0.53 ± 0.09 mg kg-1). More than 60% of the As was in the edible fraction in the wild shrimp, while in farmed shrimp this was less than 50%. The speciation analysis showed that arsenobetaine (AsB) was the predominant As form and iAs was below the Chinese legislation levels (iAs <0.50 mg kg-1) for shrimp in both species. CONCLUSION The arsenic uptake in wild and farmed shrimp was discussed and some differences were found related to feed and salinity. About legislation, it has been concluded that most food legislations that consider only tAs are not appropriate to assess the toxicity of As in seafood. It is necessary to update the legislation of food control agencies to insert As speciation analysis in their protocols.
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Affiliation(s)
- Wladiana O Matos
- Laboratório de Estudos em Química Aplicada (LEQA), Departamento de Química Analítica e Físico-Química, Centro de Ciências, Campus do Pici, Universidade Federal do Ceará, Fortaleza, CE 60455-760, Brazil
| | - Francisco L F da Silva
- Laboratório de Estudos em Química Aplicada (LEQA), Departamento de Química Analítica e Físico-Química, Centro de Ciências, Campus do Pici, Universidade Federal do Ceará, Fortaleza, CE 60455-760, Brazil
| | - Savarin Sinaviwat
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland, UK
| | - Emma J Menzies
- TESLA - Analytical Chemistry, Institute of Chemistry, University of Graz, Universitätsplatz 1, 8010 Graz, Austria
| | - Andrea Raab
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland, UK; TESLA - Analytical Chemistry, Institute of Chemistry, University of Graz, Universitätsplatz 1, 8010 Graz, Austria
| | - Eva M Krupp
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland, UK
| | - Joerg Feldmann
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland, UK; TESLA - Analytical Chemistry, Institute of Chemistry, University of Graz, Universitätsplatz 1, 8010 Graz, Austria.
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Mlangeni AT, Lancaster ST, Raab A, Krupp EM, Norton GJ, Feldmann J. Higher zero valent iron soil amendments dosages markedly inhibit accumulation of As in Faya and Kilombero cultivars compared to Cd. Sci Total Environ 2021; 794:148735. [PMID: 34323768 DOI: 10.1016/j.scitotenv.2021.148735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 05/27/2021] [Accepted: 06/25/2021] [Indexed: 06/13/2023]
Abstract
Impact of zero valent iron (Fe°) amendment on grain-yield (GY) and grain-As and Cd accumulation in rice (Oryza sativa L.) cultivars Kilombero and Faya were investigated. Rice plants were amended with Fe° dosages of 0, 3.1, 6.2, and 12.4 g Fe°/kg soil in pots in greenhouse experiments under continuous flooding water regime. GY in each treatment was determined at maturity, grain-As and Cd and arsenic species concentrations were determined using ICP-MS and HPLC tandem ICP-MS respectively. Mean GY in Faya (5.5 ± 1.0 g/plant) and Kilombero (4.2 ± 0.4 g/plant) amended with at least 6.2 g Fe°/kg soil were at least 57% and 22% respectively significantly higher (F = 11; p = 0.003) than that in controls (3.7 ± 0.6 and 3.4 ± 0.4 g/plant). For As bioaccumulation, mean grain-As concentration in Faya T2 (≤227 ± 32 μg/kg) and Kilombero (≤218 ± 25 μg/kg) amended with at least 6.2 g Fe°/kg soil in were at least 83% and 77% respectively significantly lower (F = 7; p = 0.004) than that in controls (973 ± 43 μg/kg and 1278 ± 208 μg/kg). Mean grain-Cd concentrations in Faya (10 ± 2 μg/kg) and Kilombero (13 ± 3 μg/kg) amended with corresponding Fe° dosages were at least 26% and 39% significantly lower (F = 4; p < 0.05) than that in controls (18 ± 3 and 23 ± 1 μg/kg). Results indicated that amending Kilombero with at least 6.2 g/kg Fe° effectively optimally regulated both grain-As and Cd accumulation to values lower than the European Commission's legislated maximum contaminant limits (MCL) of 200 μg/kg without negating grain yield benefits. Our results suggest that bioaccumulation of both As and Cd in rice grains may be completely circumvented by adopting cultivar-specific Fe° amendment dosage.
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Affiliation(s)
- Angstone Thembachako Mlangeni
- Natural Resources College, Lilongwe University of Agriculture and Natural Resources, Malawi; Trace Elements Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, University of Aberdeen, Scotland, United Kingdom.
| | - Shaun T Lancaster
- P S Analytical, Orpington, Kent, United Kingdom; Trace Elements Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, University of Aberdeen, Scotland, United Kingdom
| | - Andrea Raab
- Trace Elements Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, University of Aberdeen, Scotland, United Kingdom
| | - Eva M Krupp
- Trace Elements Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, University of Aberdeen, Scotland, United Kingdom
| | - Gareth J Norton
- School of Biological Sciences, University of Aberdeen, United Kingdom
| | - Joerg Feldmann
- Trace Elements Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, University of Aberdeen, Scotland, United Kingdom.
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Subirana MA, Paton L, Hall J, Brownlow A, Krupp EM, Feldmann J, Schaumlöffel D. Development of Mercury Analysis by NanoSIMS for the Localization of Mercury-Selenium Particles in Whale Liver. Anal Chem 2021; 93:12733-12739. [PMID: 34499489 DOI: 10.1021/acs.analchem.1c02769] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nanoscale secondary ion mass spectrometry (NanoSIMS) is a dynamic SIMS technique, which offers high spatial resolution allowing the mapping of chemical elements at the nanometer scale combined with high sensitivity. However, SIMS for mercury analysis is a challenging issue due to the low secondary ion yield and has never been done on NanoSIMS. The introduction of an rf plasma oxygen primary ion source on NanoSIMS enabled higher lateral resolution and higher sensitivity for electropositive elements such as most metals. In this paper, for the first time, mercury analysis by NanoSIMS was developed applying the new rf plasma O- ion source. All mercury isotopes could be detected as Hg+ secondary ions and the isotopic pattern corresponded to their natural isotopic abundances. Furthermore, Hg+ detection in HgSe nanocrystals has been investigated where polyatomic interferences from selenium clusters were identified and separated by high mass resolution (ΔM/M ≥ 3200). However, in the presence of selenium a strong matrix effect was observed, decreasing the Hg+ secondary ion yield. In addition, a detection of Se+ ions was possible, too. The newly developed method was successfully applied to nanoscale localization by chemical imaging of HgSe particles accumulated in the liver tissue of sperm whale (Physeter macrocephalus). This demonstrated the applicability of NanoSIMS not only for mercury detection in surface analysis but also for mercury mapping in biological samples.
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Affiliation(s)
- Maria Angels Subirana
- CNRS, Université de Pau et des Pays de l'Adour, E2S UPPA, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux, UMR 5254, 64000 Pau, France
| | - Lhiam Paton
- TESLA-Analytical Chemistry, Institute of Chemistry, University of Graz, 8010 Graz, Austria
| | - James Hall
- TESLA-Chemistry, School of Computing and Physical Sciences, University of Aberdeen, Aberdeen AB24 3UE, Scotland, U.K
| | - Andrew Brownlow
- Marine Animal Stranding Scheme, Institute of Biodiversity, Animal Health & Comparative Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K
| | - Eva M Krupp
- TESLA-Chemistry, School of Computing and Physical Sciences, University of Aberdeen, Aberdeen AB24 3UE, Scotland, U.K
| | - Jörg Feldmann
- TESLA-Analytical Chemistry, Institute of Chemistry, University of Graz, 8010 Graz, Austria
| | - Dirk Schaumlöffel
- CNRS, Université de Pau et des Pays de l'Adour, E2S UPPA, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux, UMR 5254, 64000 Pau, France
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Mlangeni AT, Perez M, Raab A, Krupp EM, Norton GJ, Feldmann J. Simultaneous stimulation of arsenic methylation and inhibition of cadmium bioaccumulation in rice grain using zero valent iron and alternate wetting and drying water management. Sci Total Environ 2020; 711:134696. [PMID: 31852588 DOI: 10.1016/j.scitotenv.2019.134696] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 09/26/2019] [Accepted: 09/26/2019] [Indexed: 06/10/2023]
Abstract
Studies aiming to limit bioaccumulation of arsenic (As) and cadmium (Cd) in rice grain has attracted global attention. In this study, simultaneous impact of zero valent iron (Fe⁰) and various water management regimes (continuous flooding (CF), alternate wetting and drying (AWD) and low water (LW)) on rice grain yield (GYM) and bioaccumulation of As and Cd in unpolished rice grain (URG) were investigated. Compared to respective control treatments, Fe⁰ significantly reduced GYM under LW by 32% (p < 0.001) and significantly increased GYM under AWD by 24% (p = 0.009; F = 5.9) but had no significant effect on GYM under CF water management regime (p > 0.05). The grain harvest index was significantly higher in Fe⁰ amended rice under AWD (67%; p < 0.001) and CF (35%; p = 0.001) compared to those without Fe⁰ amendment. Fe⁰ significantly reduced tAs in URG under LW by 32% (p < 0.017) and significantly increased tAs in URG under AWD by 37% (p = 0.007) but had no significant effect on tAs in URG under CF (p > 0.05). The Cd concentrations were significantly reduced by 51% (p = 0.002) and 61% (p < 0.003) in URG under LW and AWD respectively compared to the respective control treatments. The Dimethylarsinic acid (DMA) in unpolished rice (URG) under AWD (+Fe⁰) was significantly higher (p < 0.01; F = 11.3) compared to that accumulated in URG under AWD(-Fe°). Despite increasing As accumulation in AWD water management, simultaneous use of AWD water management and Fe° increased grain yield, enhanced accumulation of less toxic methylated As in rice grains and accumulated low Cd concentrations comparable to that attainable with CF water management indicating that simultaneous use AWD and Fe° can be effective in controlling Cd accumulation in paddies highly contaminated with Cd.
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Affiliation(s)
- Angstone Thembachako Mlangeni
- Trace Elements Speciation Laboratory Aberdeen, Chemistry Department, University of Aberdeen, UK; Natural Resource College, Lilongwe University of Agriculture and Natural Resources, Lilongwe, Malawi
| | - Magali Perez
- Trace Elements Speciation Laboratory Aberdeen, Chemistry Department, University of Aberdeen, UK
| | - Andrea Raab
- Trace Elements Speciation Laboratory Aberdeen, Chemistry Department, University of Aberdeen, UK
| | - Eva M Krupp
- Trace Elements Speciation Laboratory Aberdeen, Chemistry Department, University of Aberdeen, UK
| | | | - Joerg Feldmann
- Trace Elements Speciation Laboratory Aberdeen, Chemistry Department, University of Aberdeen, UK
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Akhdhar A, Schneider M, Orme A, Schultes L, Raab A, Krupp EM, Benskin JP, Welz B, Feldmann J. The use of high resolution graphite furnace molecular absorption spectrometry (HR -MAS) for total fluorine determination in extractable organofluorines (EOF). Talanta 2019; 209:120466. [PMID: 31892068 DOI: 10.1016/j.talanta.2019.120466] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 10/05/2019] [Accepted: 10/10/2019] [Indexed: 10/25/2022]
Abstract
The determination of total fluorine content using high-resolution graphite furnace continuum source molecular absorption spectrometry (HR- MAS) has been employed in a variety of samples for over 10 years. However, most of the samples analysed by HR- MAS are rich in fluoride, with negligible levels of organic fluorinated species. With an increase in concern surrounding per- and polyfluoroalkyl substances (PFASs), new methods to measure total fluorine of organofluorine using different techniques have been developed. However, no studies focused on PFASs behaviour in HR-MAS have been performed. As these compounds encompass a wide range of different structures, boiling points, decomposition temperatures and matrix interactions, a loss of accuracy can occur when an aqueous external calibration is performed using only one compound. To overcome this issue, an investigation into permanent modifiers for the graphite furnace was performed. After optimisation similar sensitivity for different PFCA was achieved when 400 μg of W was used as a permanent modifier together with an optimised temperature program. The relative deviation between the different PFCA standard slopes relative to the PFOA slope was lower than 15%. The instrumental limit of detection and quantification (LOD and LOQ, respectively) of total fluorine as total PFCA was 0.1 mg L-1 and 0.3 mg L-1, respectively, while the method LOD and LOQ (using solid phase extraction) was 0.3 μg L-1 and 1.0 μg L-1, respectively. The developed method gave satisfactory recoveries for the spiked PFCA into seawater, river water and effluent using PFOA calibration standards. The optimised method is useful for measuring extractable organofluorines (EOF) when only ionic PFASs such as PFCA are expected. When other organofluorines are expected, the results using HR GF-MAS should be taken with caution.
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Affiliation(s)
- Abdullah Akhdhar
- Trace Element Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, University of Aberdeen, Aberdeen, AB24 3UE, Scotland, UK; Department of Chemistry, Faculty of Science, University of Jeddah, Jeddah, Saudi Arabia
| | - Mauana Schneider
- Trace Element Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, University of Aberdeen, Aberdeen, AB24 3UE, Scotland, UK; Departamento de Química, Universidade Federal de Santa Catarina, Florianopolis, 88040-900, Brazil
| | - Alice Orme
- Trace Element Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, University of Aberdeen, Aberdeen, AB24 3UE, Scotland, UK
| | - Lara Schultes
- Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University, Stockholm, Sweden
| | - Andrea Raab
- Trace Element Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, University of Aberdeen, Aberdeen, AB24 3UE, Scotland, UK
| | - Eva M Krupp
- Trace Element Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, University of Aberdeen, Aberdeen, AB24 3UE, Scotland, UK
| | - Jonathan P Benskin
- Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University, Stockholm, Sweden
| | - Bernhard Welz
- Departamento de Química, Universidade Federal de Santa Catarina, Florianopolis, 88040-900, Brazil
| | - Jörg Feldmann
- Trace Element Speciation Laboratory Aberdeen (TESLA), Department of Chemistry, University of Aberdeen, Aberdeen, AB24 3UE, Scotland, UK.
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Ruhland D, Nwoko K, Perez M, Feldmann J, Krupp EM. AF4-UV-MALS-ICP-MS/MS, spICP-MS, and STEM-EDX for the Characterization of Metal-Containing Nanoparticles in Gas Condensates from Petroleum Hydrocarbon Samples. Anal Chem 2018; 91:1164-1170. [DOI: 10.1021/acs.analchem.8b05010] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Daniel Ruhland
- Trace Element Speciation Laboratory (TESLA), University of Aberdeen, Aberdeen AB24 3UE, U.K
| | - Kenneth Nwoko
- Trace Element Speciation Laboratory (TESLA), University of Aberdeen, Aberdeen AB24 3UE, U.K
| | - Magali Perez
- Trace Element Speciation Laboratory (TESLA), University of Aberdeen, Aberdeen AB24 3UE, U.K
| | - Jörg Feldmann
- Trace Element Speciation Laboratory (TESLA), University of Aberdeen, Aberdeen AB24 3UE, U.K
| | - Eva M. Krupp
- Trace Element Speciation Laboratory (TESLA), University of Aberdeen, Aberdeen AB24 3UE, U.K
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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] [What about the content of this article? (0)] [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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Gajdosechova Z, Mester Z, Feldmann J, Krupp EM. The role of selenium in mercury toxicity – Current analytical techniques and future trends in analysis of selenium and mercury interactions in biological matrices. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2017.12.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Elgazali AAS, Gajdosechova Z, Abbas Z, Lombi E, Scheckel KG, Donner E, Fiedler H, Feldmann J, Krupp EM. Reactive gaseous mercury is generated from chloralkali factories resulting in extreme concentrations of mercury in hair of workers. Sci Rep 2018; 8:3675. [PMID: 29487292 PMCID: PMC5829213 DOI: 10.1038/s41598-018-20544-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 01/10/2018] [Indexed: 11/09/2022] Open
Abstract
Occupational exposure of chloralkali workers to highly concentrated mercury (Hg) vapour has been linked to an increased risk of renal dysfunction and behavioural changes. It is generally believed that these workers are exposed to elemental Hg, which is used in abundance during the production process however, the lack in analytical techniques that would allow for identification of gaseous Hg species poses a challenge, which needs to be addressed in order to reach a consensus. Here, we present the results from simulated exposure studies, which provide sound evidence of higher adsorption rate of HgCl2 than Hg0 and its irreversible bonding on the surface of hair. We found that chloralkali workers were exposed to HgCl2, which accumulated in extremely high concentrations on the hair surface, more than 1,000 times higher than expected from unexposed subjects and was positively correlated with Hg levels in the finger- and toenails.
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Affiliation(s)
- Abdelkarem A S Elgazali
- Trace Element Speciation Laboratory, University of Aberdeen, Department of Chemistry, Aberdeen, UK
| | - Zuzana Gajdosechova
- Trace Element Speciation Laboratory, University of Aberdeen, Department of Chemistry, Aberdeen, UK
| | - Zaigham Abbas
- Government of Pakistan Ministry of Climate Change, LG & RD Complex, Islamabad, Pakistan
| | - Enzo Lombi
- Future Industries Institute, University of South Australia, Building X, Mawson Lakes Campus, Mawson Lakes, South Australia, Australia
| | - Kirk G Scheckel
- Future Industries Institute, University of South Australia, Building X, Mawson Lakes Campus, Mawson Lakes, South Australia, Australia
- United States Environmental Protection Agency, National Risk Management Research Laboratory, Cincinnati, OH, 45224, USA
| | - Erica Donner
- Future Industries Institute, University of South Australia, Building X, Mawson Lakes Campus, Mawson Lakes, South Australia, Australia
| | - Heidelore Fiedler
- United Nations Environmental Programme, Chemicals Branch, DTIE, 11-13 Chemin des Anemones, CH-1219, Chatelaine, Switzerland
- Örebro University, School of Science and Technology, MTM Research Centre, SE-701 82, Örebro, Sweden
| | - Jörg Feldmann
- Trace Element Speciation Laboratory, University of Aberdeen, Department of Chemistry, Aberdeen, UK.
| | - Eva M Krupp
- Trace Element Speciation Laboratory, University of Aberdeen, Department of Chemistry, Aberdeen, UK.
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Cavoura O, Brombach CC, Cortis R, Davidson CM, Gajdosechova Z, Keenan HE, Krupp EM. Mercury alkylation in freshwater sediments from Scottish canals. Chemosphere 2017; 183:27-35. [PMID: 28531556 DOI: 10.1016/j.chemosphere.2017.05.077] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Revised: 05/11/2017] [Accepted: 05/12/2017] [Indexed: 06/07/2023]
Abstract
Mercury concentrations were investigated in freshwater sediment from two canals in Scotland, UK. High concentrations found in the Union Canal (35.3-1200 mg kg-1) likely originate from historical munitions manufacture, with lower levels in the Forth & Clyde Canal (0.591-9.14 mg kg-1). Concentrations of methylmercury (MeHg) were low - from 6.02 to 18.6 μg kg-1 (0.001-0.023% of total Hg) in the Union Canal and from 3.44 to 14.1 μg kg-1 (0.11-0.58% of total Hg) in the Forth & Clyde Canal - and there was a significant inverse relationship between total Hg concentration and %MeHg. Total Hg concentration was significantly negatively correlated with pH and positively correlated with Fe content (in the Union Canal only) but not with organic matter, S content or the proportion of clay present. The MeHg concentration was not correlated with any of the above sediment parameters. Ethylmercury was detected in the most highly contaminated sediments from the Union Canal.
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Affiliation(s)
- Olga Cavoura
- National School of Public Health, Dept. of Environmental and Public Health Engineering, Athens, Greece; University of Strathclyde, Dept. of Civil and Environmental Engineering, Glasgow, Scotland, UK.
| | - C C Brombach
- University of Aberdeen, Dept. of Chemistry, Aberdeen, Scotland, UK
| | - R Cortis
- University of Strathclyde, WestCHEM, Dept. of Pure and Applied Chemistry, Glasgow, Scotland, UK
| | - C M Davidson
- University of Strathclyde, WestCHEM, Dept. of Pure and Applied Chemistry, Glasgow, Scotland, UK.
| | - Z Gajdosechova
- University of Aberdeen, Dept. of Chemistry, Aberdeen, Scotland, UK
| | - H E Keenan
- University of Strathclyde, Dept. of Civil and Environmental Engineering, Glasgow, Scotland, UK.
| | - E M Krupp
- University of Aberdeen, Dept. of Chemistry, Aberdeen, Scotland, UK.
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12
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Bralatei E, Nekrosiute K, Ronan J, Raab A, McGovern E, Stengel DB, Krupp EM, Feldmann J. A field deployable method for a rapid screening analysis of inorganic arsenic in seaweed. Mikrochim Acta 2017; 184:1701-1709. [PMID: 28572689 PMCID: PMC5429896 DOI: 10.1007/s00604-017-2151-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 02/22/2017] [Indexed: 11/24/2022]
Abstract
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 HNO3 to quantitatively extract iAs without decomposing the organoarsenicals to iAs followed by the selective volatilisation of iAs as arsine (AsH3) and subsequent chemo-trapping on a filter paper soaked in mercury bromide (HgBr2) 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, R2 = 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. Graphical abstractScreening seaweed for their inorganic arsenic concentration within one hour without bias has been made possible in the field by using a field deployable arsenic kit. Its accuracy and precision was compared to HPLC-ICPMS.
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Affiliation(s)
- Edi Bralatei
- TESLA (Trace Element Speciation Laboratory), Department of Chemistry, University of Aberdeen, Aberdeen, Scotland AB24 3UE UK
| | - Karolina Nekrosiute
- TESLA (Trace Element Speciation Laboratory), Department of Chemistry, University of Aberdeen, Aberdeen, Scotland AB24 3UE UK
| | - Jenny Ronan
- Marine Institute, Rinville, Oranmore, Co. Galway Ireland
| | - Andrea Raab
- TESLA (Trace Element Speciation Laboratory), Department of Chemistry, University of Aberdeen, Aberdeen, Scotland AB24 3UE UK
| | - Evin McGovern
- Marine Institute, Rinville, Oranmore, Co. 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
| | - Eva M. Krupp
- TESLA (Trace Element Speciation Laboratory), Department of Chemistry, University of Aberdeen, Aberdeen, Scotland AB24 3UE UK
| | - Joerg Feldmann
- TESLA (Trace Element Speciation Laboratory), Department of Chemistry, University of Aberdeen, Aberdeen, Scotland AB24 3UE UK
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13
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Bosle J, Goetz S, Raab A, Krupp EM, Scheckel KG, Lombi E, Meharg AA, Fowler PA, Feldmann J. Cobalamin Concentrations in Fetal Liver Show Gender Differences: A Result from Using a High-Pressure Liquid Chromatography–Inductively Coupled Plasma Mass Spectrometry as an Ultratrace Cobalt Speciation Method. Anal Chem 2016; 88:12419-12426. [DOI: 10.1021/acs.analchem.6b03730] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Janine Bosle
- TESLA
(Trace Element Speciation Laboratory), Department of Chemistry, Meston
Walk, University of Aberdeen, Aberdeen, AB24 3UE, Scotland, U.K
| | - Sven Goetz
- TESLA
(Trace Element Speciation Laboratory), Department of Chemistry, Meston
Walk, University of Aberdeen, Aberdeen, AB24 3UE, Scotland, U.K
| | - Andrea Raab
- TESLA
(Trace Element Speciation Laboratory), Department of Chemistry, Meston
Walk, University of Aberdeen, Aberdeen, AB24 3UE, Scotland, U.K
| | - Eva M. Krupp
- TESLA
(Trace Element Speciation Laboratory), Department of Chemistry, Meston
Walk, University of Aberdeen, Aberdeen, AB24 3UE, Scotland, U.K
| | - Kirk G. Scheckel
- U.S. Environmental Protection Agency, National
Risk Management Research Laboratory Land Remediation and Pollution
Control Division, 5995
Center Hill Avenue, Cincinnati, Ohio 45224, United States
| | - Enzo Lombi
- Future
Industries Institute, University of South Australia, Building X, Mawson Lakes Campus, Mawson Lakes, South Australia, SA-5095, Australia
| | - Andrew A. Meharg
- Institute
for Global Food Security, Queen’s University Belfast, Malone Road, Belfast, Ireland, BT9
5BN, U.K
| | - Paul A. Fowler
- Institute of Medical Sciences, School of Medicine, Medical Sciences & Nutrition, University of Aberdeen, Aberdeen, AB25 2ZD, Scotland, U.K
| | - Jörg Feldmann
- TESLA
(Trace Element Speciation Laboratory), Department of Chemistry, Meston
Walk, University of Aberdeen, Aberdeen, AB24 3UE, Scotland, U.K
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14
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Aborode FA, Raab A, Voigt M, Costa LM, Krupp EM, Feldmann J. The importance of glutathione and phytochelatins on the selenite and arsenate detoxification in Arabidopsis thaliana. J Environ Sci (China) 2016; 49:150-161. [PMID: 28007170 DOI: 10.1016/j.jes.2016.08.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 08/08/2016] [Accepted: 08/13/2016] [Indexed: 05/24/2023]
Abstract
We investigated the role of glutathione (GSH) and phytochelatins (PCs) on the detoxification of selenite using Arabidopsis thaliana. The wild-type (WT) of Arabidopsis thaliana and its mutants (glutathione deficient Cad 2-1 and phytochelatins deficient Cad 1-3) were separately exposed to varying concentrations of selenite and arsenate and jointly to both toxicants to determine their sensitivities. The results of the study revealed that, the mutants were about 20-fold more sensitive to arsenate than the WT, an indication that the GSH and PCs affect arsenate detoxification. On the contrary, the WT and both mutants showed a similar level of sensitivity to selenite, an indication that the GSH and PCs do not significantly affect selenite detoxification. However, the WT is about 8 times more sensitive to selenite than to arsenate, and the mutants were more resistant to selenite than arsenate by a factor of 2. This could not be explained by the accumulation of both elements in roots and shoots in exposure experiments. The co-exposure of the WT indicates a synergistic effect with regards to toxicity since selenite did not induce PCs but arsenic and selenium compete in their PC binding as revealed by speciation analysis of the root extracts using HPLC-ICP-MS/ESI-MS. In the absence of PCs an antagonistic effect has been detected which might suggest indirectly that the formation of Se glutathione complex prevent the formation of detrimental selenopeptides. This study, therefore, revealed that PC and GSH have only a subordinate role in the detoxification of selenite.
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Affiliation(s)
- Fatai Adigun Aborode
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK.
| | - Andrea Raab
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK
| | - Matthias Voigt
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK
| | - Leticia Malta Costa
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK; Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG CEP: 31270-901, Brazil
| | - Eva M Krupp
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK
| | - Joerg Feldmann
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK.
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15
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Affiliation(s)
- Eva M. Krupp
- University of Aberdeen; Chemistry Department; Meston Walk Aberdeen AB24 3UE UK
| | - Zuzana Gajdosechova
- University of Aberdeen; Chemistry Department; Meston Walk Aberdeen AB24 3UE UK
| | - Tanja Schwerdtle
- University of Potsdam, Institute of Nutritional Science; Department of Food Chemistry; Arthur-Scheunert-Allee 114-116 14558 Nuthetal Germany
| | - Hanna Lohren
- University of Potsdam, Institute of Nutritional Science; Department of Food Chemistry; Arthur-Scheunert-Allee 114-116 14558 Nuthetal Germany
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16
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Brombach CC, Manorut P, Kolambage-Dona PPP, Ezzeldin MF, Chen B, Corns WT, Feldmann J, Krupp EM. Methylmercury varies more than one order of magnitude in commercial European rice. Food Chem 2016; 214:360-365. [PMID: 27507486 DOI: 10.1016/j.foodchem.2016.07.064] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 07/03/2016] [Accepted: 07/10/2016] [Indexed: 10/21/2022]
Abstract
Rice is known to accumulate methylmercury (MeHg) in the rice grains. MeHg as a neurotoxin impacts on the human central nervous systems and especially on the developing brain. In this exploratory study, 87 commercial rice products sold in Europe, including nine baby-rice products, were analyzed for total Hg and MeHg content. MeHg concentration in all rice products investigated range from 0.11 to 6.45μgkg(-1) with an average value of 1.91±1.07μgkg(-1) and baby-rice is not significantly different from other rice products. Total Hg ranges from 0.53 to 11.1μgkg(-1) with an average of 3.04±2.07μgkg(-1). MeHg concentrations in all rice products studied in this work would not exceed the provisional tolerable weekly intake (PTWI). 30% of all commercial market rice products exceeded 10% of the PTWI calculated for toddlers or 13% of products for adults with rice based diet.
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Affiliation(s)
- Christoph-Cornelius Brombach
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, United Kingdom; PS Analytical, Arthur House, Crayfields Industrial Estate, Main Road, Orpington, Kent BR5 3HP, United Kingdom
| | - Parinda Manorut
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, United Kingdom
| | - Piumi P P Kolambage-Dona
- PS Analytical, Arthur House, Crayfields Industrial Estate, Main Road, Orpington, Kent BR5 3HP, United Kingdom
| | - Mohammed Farouk Ezzeldin
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, United Kingdom; Environmental Health Department, University of Dammam, Saudi Arabia
| | - Bin Chen
- PS Analytical, Arthur House, Crayfields Industrial Estate, Main Road, Orpington, Kent BR5 3HP, United Kingdom
| | - Warren T Corns
- PS Analytical, Arthur House, Crayfields Industrial Estate, Main Road, Orpington, Kent BR5 3HP, United Kingdom
| | - Jörg Feldmann
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, United Kingdom
| | - Eva M Krupp
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, United Kingdom.
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17
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Gajdosechova Z, Brownlow A, Cottin NT, Fernandes M, Read FL, Urgast DS, Raab A, Feldmann J, Krupp EM. Possible link between Hg and Cd accumulation in the brain of long-finned pilot whales (Globicephala melas). Sci Total Environ 2016; 545-546:407-413. [PMID: 26748005 DOI: 10.1016/j.scitotenv.2015.12.082] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 12/18/2015] [Accepted: 12/18/2015] [Indexed: 06/05/2023]
Abstract
The bioaccumulation of metals was investigated by analysis of liver, kidney, muscle and brain tissue of a pod of 21 long-finned pilot whales (Globicephala melas) of all ages stranded in Scotland, UK. The results are the first to report cadmium (Cd) passage through the blood-brain barrier of pilot whales and provide a comprehensive study of the long-term (up to 35 years) mammalian exposure to the environmental pollutants. Additionally, linear accumulation of mercury (Hg) was observed in all studied tissues, whereas for Cd this was only observed in the liver. Total Hg concentration above the upper neurochemical threshold was found in the sub-adult and adult brains and methylmercury (MeHg) of 2.2mg/kg was found in the brain of one individual. Inter-elemental analysis showed significant positive correlations of Hg with selenium (Se) and Cd with Se in all studied tissues. Furthermore, differences in the elemental concentrations in the liver and brain tissues were found between juvenile, sub-adult and adult groups. The highest concentrations of manganese, iron, zinc, Se, Hg and MeHg were noted in the livers, whereas Cd predominantly accumulated in the kidneys. High concentrations of Hg and Cd in the tissues of pilot whales presented in this study reflect ever increasing toxic stress on marine mammals.
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Affiliation(s)
- Zuzana Gajdosechova
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, UK
| | | | - Nicolas T Cottin
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, UK
| | - Mariana Fernandes
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, UK
| | - Fiona L Read
- Oceanlab, University of Aberdeen, Main Street, Newburgh AB41 6AA, UK
| | - Dagmar S Urgast
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, UK
| | - Andrea Raab
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, UK
| | - Jörg Feldmann
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, UK
| | - Eva M Krupp
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, UK
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18
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Affiliation(s)
- Edi Bralatei
- TESLA (Trace Element Speciation
Laboratory), Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, AB24 3UE, Scotland, United Kingdom
| | - Severine Lacan
- TESLA (Trace Element Speciation
Laboratory), Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, AB24 3UE, Scotland, United Kingdom
| | - Eva M Krupp
- TESLA (Trace Element Speciation
Laboratory), Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, AB24 3UE, Scotland, United Kingdom
| | - Jörg Feldmann
- TESLA (Trace Element Speciation
Laboratory), Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, AB24 3UE, Scotland, United Kingdom
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19
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Zhu XM, Hackl S, Thaker MN, Kalan L, Weber C, Urgast DS, Krupp EM, Brewer A, Vanner S, Szawiola A, Yim G, Feldmann J, Bechthold A, Wright GD, Zechel DL. Biosynthesis of the Fluorinated Natural Product Nucleocidin inStreptomyces calvusIs Dependent on thebldA-Specified Leu-tRNAUUAMolecule. Chembiochem 2015; 16:2498-506. [DOI: 10.1002/cbic.201500402] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Xi Ming Zhu
- Department of Chemistry; Queen's University; Chernoff Hall 90 Bader Lane Kingston Ontario K7L 3N6 Canada
| | - Stefanie Hackl
- Department of Pharmaceutical Biology and Biotechnology; Institute of Pharmaceutical Sciences; Albert-Ludwigs-Universität Freiburg; Stefan-Meier-Strasse 19 79104 Freiburg Germany
| | - Maulik N. Thaker
- Michael G. DeGroote Institute for Infectious Disease Research; McMaster University; 1200 Main Street West Hamilton Ontario L8N 3Z5 Canada
| | - Lindsay Kalan
- Michael G. DeGroote Institute for Infectious Disease Research; McMaster University; 1200 Main Street West Hamilton Ontario L8N 3Z5 Canada
| | - Claudia Weber
- Trace Element Speciation Laboratory; Department of Chemistry; University of Aberdeen; Aberdeen AB24 3UE UK
| | - Dagmar S. Urgast
- Trace Element Speciation Laboratory; Department of Chemistry; University of Aberdeen; Aberdeen AB24 3UE UK
| | - Eva M. Krupp
- Trace Element Speciation Laboratory; Department of Chemistry; University of Aberdeen; Aberdeen AB24 3UE UK
| | - Alyssa Brewer
- Department of Chemistry; Queen's University; Chernoff Hall 90 Bader Lane Kingston Ontario K7L 3N6 Canada
| | - Stephanie Vanner
- Department of Chemistry; Queen's University; Chernoff Hall 90 Bader Lane Kingston Ontario K7L 3N6 Canada
| | - Anjuli Szawiola
- Department of Chemistry; Queen's University; Chernoff Hall 90 Bader Lane Kingston Ontario K7L 3N6 Canada
| | - Grace Yim
- Michael G. DeGroote Institute for Infectious Disease Research; McMaster University; 1200 Main Street West Hamilton Ontario L8N 3Z5 Canada
| | - Jörg Feldmann
- Trace Element Speciation Laboratory; Department of Chemistry; University of Aberdeen; Aberdeen AB24 3UE UK
| | - Andreas Bechthold
- Department of Pharmaceutical Biology and Biotechnology; Institute of Pharmaceutical Sciences; Albert-Ludwigs-Universität Freiburg; Stefan-Meier-Strasse 19 79104 Freiburg Germany
| | - Gerard D. Wright
- Michael G. DeGroote Institute for Infectious Disease Research; McMaster University; 1200 Main Street West Hamilton Ontario L8N 3Z5 Canada
| | - David L. Zechel
- Department of Chemistry; Queen's University; Chernoff Hall 90 Bader Lane Kingston Ontario K7L 3N6 Canada
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20
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Aborode FA, Raab A, Foster S, Lombi E, Maher W, Krupp EM, Feldmann J. Selenopeptides and elemental selenium in Thunbergia alata after exposure to selenite: quantification method for elemental selenium. Metallomics 2015; 7:1056-66. [DOI: 10.1039/c5mt00025d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
T. alata plants were exposed to 10 μM selenite to determine biotransformation of selenium in their roots using HPLC-ICPMS/ESIMS and EXAFS.
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Affiliation(s)
- Fatai Adigun Aborode
- TESLA (Trace Element Speciation Laboratory) Department of Chemistry
- Meston Walk
- University of Aberdeen
- Aberdeen AB24 3UE
- Scotland, UK
| | - Andrea Raab
- TESLA (Trace Element Speciation Laboratory) Department of Chemistry
- Meston Walk
- University of Aberdeen
- Aberdeen AB24 3UE
- Scotland, UK
| | - Simon Foster
- University of Canberra
- Ecochemistry Laboratory
- Institute for Applied Ecology
- , Australia
| | - Enzo Lombi
- Centre for Environmental Risk Assessment and Remediation
- University of South Australia
- Mawson Lakes, Australia
| | - William Maher
- University of Canberra
- Ecochemistry Laboratory
- Institute for Applied Ecology
- , Australia
| | - Eva M. Krupp
- TESLA (Trace Element Speciation Laboratory) Department of Chemistry
- Meston Walk
- University of Aberdeen
- Aberdeen AB24 3UE
- Scotland, UK
| | - Joerg Feldmann
- TESLA (Trace Element Speciation Laboratory) Department of Chemistry
- Meston Walk
- University of Aberdeen
- Aberdeen AB24 3UE
- Scotland, UK
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21
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Brombach CC, Gajdosechova Z, Chen B, Brownlow A, Corns WT, Feldmann J, Krupp EM. Direct online HPLC-CV-AFS method for traces of methylmercury without derivatisation: a matrix-independent method for urine, sediment and biological tissue samples. Anal Bioanal Chem 2014; 407:973-81. [DOI: 10.1007/s00216-014-8254-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Revised: 09/26/2014] [Accepted: 10/08/2014] [Indexed: 11/30/2022]
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22
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Amayo KO, Raab A, Krupp EM, Marschall T, Horsfall M, Feldmann J. Arsenolipids show different profiles in muscle tissues of four commercial fish species. J Trace Elem Med Biol 2014; 28:131-137. [PMID: 24332310 DOI: 10.1016/j.jtemb.2013.11.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 11/12/2013] [Accepted: 11/13/2013] [Indexed: 11/19/2022]
Abstract
Identification of arsenolipids in biological samples is today a challenge and in particular the need for speciation data for toxicological assessment. Fish is one of the major contributors of arsenic in diet. However, the majority of work in this area has only focused on the water soluble compounds. The aim of this study is to provide some data on total arsenic and in particular to gain insights into the types of arsenolipids in the muscle tissues of four commercial and commonly consumed fish species. Determination of total arsenic was carried out by ICP-MS following microwave-assisted acid digestion of the samples and the concentrations found for total arsenic in the muscles ranged from 4.8 to 6.0μg/gd.w. Sequential extraction was carried out using hexane and MeOH/DCM followed by reversed phase HPLC-ICP-MS/ESI-MS analysis of the MeOH/DCM fraction. Eight arsenolipids including three arsenic fatty acids (AsFAs) and five arsenic hydrocarbons (AsHCs) were identified. The result showed that fish with higher arsenolipid (AsLp) content (brill and sardine) are dominated by AsHC, while those with the smaller proportion of AsLp (mackerel and red mullet) have predominately arsenic in the form of AsFA.
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Affiliation(s)
- Kenneth O Amayo
- Trace Element Speciation Laboratory (TESLA), Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK; Department of Chemistry, Ambrose Alli University, Ekpoma, Nigeria.
| | - Andrea Raab
- Trace Element Speciation Laboratory (TESLA), Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK
| | - Eva M Krupp
- Trace Element Speciation Laboratory (TESLA), Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK
| | - Talke Marschall
- Trace Element Speciation Laboratory (TESLA), Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK
| | - Michael Horsfall
- Central Instrument Laboratory (CIL), Department of Pure & Industrial Chemistry, University of Port Harcourt, Nigeria
| | - Jörg Feldmann
- Trace Element Speciation Laboratory (TESLA), Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK.
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23
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Moriarty MM, Lai VWM, Koch I, Cui L, Combs C, Krupp EM, Feldmann J, Cullen WR, Reimer KJ. Speciation and toxicity of arsenic in mining-affected lake sediments in the Quinsam watershed, British Columbia. Sci Total Environ 2014; 466-467:90-99. [PMID: 23895779 DOI: 10.1016/j.scitotenv.2013.07.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 05/23/2013] [Accepted: 07/01/2013] [Indexed: 06/02/2023]
Abstract
Anthropogenic arsenic inputs into fresh water lakes in the Quinsam watershed, British Columbia, were probed by using multiple methods of inquiry including sediment coring combined with (210)Pb dating, a principal components analysis of elemental composition of sediments, arsenic speciation, bioaccessibility, and toxicity testing. The quantification of arsenic inputs from anthropogenic sources was not trivial because a variety of processes redistribute the element throughout lakes. However, elevated arsenic and sulfate concentrations in Long Lake, a lake that receives arsenic from a seep, suggest that this lake is influenced by mine operations. X-ray absorption near edge structure (XANES) spectra reveal similar arsenic speciation for all sediments within the studied lakes. Bioaccessibility tests, which in this study were used to approximate the solubility and availability of arsenic to benthic organisms, indicate moderate bioaccessibility of arsenic in sediments (7.9-35%). Toxicity testing indicates that not all benthic organisms should be used for evaluating arsenic toxicity, and suggests that the amphipod, Corophium volutator, shows promise as a candidate for widespread use for arsenic sediment toxicity testing.
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24
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Amayo KO, Raab A, Krupp EM, Gunnlaugsdottir H, Feldmann J. Novel Identification of Arsenolipids Using Chemical Derivatizations in Conjunction with RP-HPLC-ICPMS/ESMS. Anal Chem 2013; 85:9321-7. [DOI: 10.1021/ac4020935] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kenneth O. Amayo
- TESLA (Trace Element
Speciation Laboratory) Department of Chemistry, Meston
Walk, University of Aberdeen, Aberdeen AB24 3UE, Scotland, U.K
- Department
of Chemistry, Ambrose Alli University, Ekpoma, Nigeria
| | - Andrea Raab
- TESLA (Trace Element
Speciation Laboratory) Department of Chemistry, Meston
Walk, University of Aberdeen, Aberdeen AB24 3UE, Scotland, U.K
| | - Eva M. Krupp
- TESLA (Trace Element
Speciation Laboratory) Department of Chemistry, Meston
Walk, University of Aberdeen, Aberdeen AB24 3UE, Scotland, U.K
- ACES Aberdeen Centre of Environmental Sustainability, St
Machar Drive, Aberdeen, AB24 3UU, Scotland, U.K
| | | | - Jörg Feldmann
- TESLA (Trace Element
Speciation Laboratory) Department of Chemistry, Meston
Walk, University of Aberdeen, Aberdeen AB24 3UE, Scotland, U.K
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25
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Freitag S, Krupp EM, Raab A, Feldmann J. Impact of a snail pellet on the phytoavailability of different metals to cucumber plants (Cucumis sativus L.). Environ Sci Process Impacts 2013; 15:463-469. [PMID: 25208711 DOI: 10.1039/c2em30806a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
FePO4 based molluscicides (snail pellets) also contain a chelating agent. The influence of the chelating agent, which is intrinsically present in the molluscicide, on the phytoavailability of other metals present in the growth medium was investigated in the present study. Cucumber plants (Cucumis sativus) were grown in a hydroponic nutrient solution and exposed for one week to different metals in combination with a chelating agent containing molluscicide. Oven dried roots and shoots of plants were HNO 3/H2O2 microwave digested and analysed regarding total Fe, stable isotopic (54)Fe, Cd, Pb, and Bi concentrations using ICP-MS. The results showed that the addition of a chelating agent enhances the Fe phytoavailability to the plant, whether as an intrinsic part of the molluscicide or added individually. Additionally, the chelating agent present in the pesticide mobilises externally added metals and thus increases their phytoavailability. In particular the significantly higher Cd concentration in shoots from plants exposed to chelating agents indicates a potentially detrimental environmental effect.
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Affiliation(s)
- Sabine Freitag
- TESLA-Trace Element Speciation Laboratory, College of Physical Sciences - Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland, UK.
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Pétursdóttir AH, Gunnlaugsdóttir H, Jörundsdóttir H, Mestrot A, Krupp EM, Feldmann J. HPLC-HG-ICP-MS: a sensitive and selective method for inorganic arsenic in seafood. Anal Bioanal Chem 2012; 404:2185-91. [PMID: 22926131 DOI: 10.1007/s00216-012-6347-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Accepted: 08/08/2012] [Indexed: 10/28/2022]
Abstract
The addition of an online post-column hydride generation (HG) step to the commonly used high-performance liquid chromatography inductively coupled plasma-mass spectrometry (HPLC-ICP-MS) setup for arsenic speciation proved to significantly improve the detection limits for the determination of inorganic arsenic (iAs) as arsenate in seafood samples, where the limit of detection and limit of quantification were found to be 0.0004 and 0.0014 mg kg(-1), respectively with HG. HG as an additional step further added to the selectivity of the determination of the iAs species and increased the detection and quantification of low levels of iAs (<0.002 mg kg(-1)) in samples with complicated matrices.
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Affiliation(s)
- Asta H Pétursdóttir
- TESLA-Trace Element Speciation Laboratory, Chemistry, College of Physical Sciences, University of Aberdeen, Aberdeen, UK
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Siebold M, Leidich P, Bertini M, Deflorio G, Feldmann J, Krupp EM, Halmschlager E, Woodward S. Application of elemental bioimaging using laser ablation ICP-MS in forest pathology: distribution of elements in the bark of Picea sitchensis following wounding. Anal Bioanal Chem 2012; 402:3323-31. [DOI: 10.1007/s00216-011-5657-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Revised: 12/09/2011] [Accepted: 12/12/2011] [Indexed: 11/28/2022]
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Pétursdóttir ÁH, Gunnlaugsdóttir H, Jörundsdóttir H, Raab A, Krupp EM, Feldmann J. Determination of inorganic arsenic in seafood: Emphasizing the need for certified reference materials. PURE APPL CHEM 2012. [DOI: 10.1351/pac-con-11-10-03] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
To evaluate the accuracy and robustness of an extraction method, utilizing an -alkaline-ethanolic solution and microwave heating, the certified reference material (CRM) TORT-2 was subjected to three different instrumental methodologies: high-performance liquid chromatography (HPLC), coupled with and without post-column hydride generation; inductively coupled plasma-mass spectrometry (ICP-MS); and HPLC-hydride generation-atomic fluorescence spectrometry (HPLC-HG-AFS). The three methods gave a consistent value of inorganic arsenic (As) which is near the mean value of the reported values in the literature, which, however, range by a factor of 10. Inorganic As, defined here as all As species that do not have an As–C bond, that is, the sum of arsenite and arsenate and any thiol-bound As, was found to be less than 4 % of total As concentration in 12 samples of fish meal when subjected to this extraction method followed by HPLC-ICP-MS. To date, there is no certified value of inorganic As in a seafood-based reference material to compare to in order to validate the findings. This illustrates the difficulties in quantitative determination of inorganic As in seafood and the need for a reference material for inorganic As and proficiency tests in order to introduce legislation for a maximum level of inorganic As in seafood and feed.
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Abstract
Trace elements are a vital ingredient in our food, which directly relates to our health and well-being. The study of health effects related to the abundance or deficiency of trace elements that we are exposed to in our daily life is of prime importance in order to understand mechanisms and interactions of those elements within the human body. Trace elements taken up with food may exert toxic actions (e.g., in the case of arsenic or mercury), others are essential and a deficiency in these trace elements (e.g., iron, selenium, zinc, or iodine) can have drastic health effects and cause diseases.Therefore, toxic as well as essential aspects of trace elements must be studied and understood, so that regulating or governing bodies may advise on permissible levels for toxic elements, or recommend daily doses for the uptake of essential elements.The 4th International Conference on Trace Elements in Food (TEF-4) addressed a range of issues related to the health effects of trace elements and provided a podium for researchers from different scientific backgrounds: analytical chemists, toxicologists, nutritionists, environmental scientists, and members of health authorities came together to present and discuss recent advances and findings.The conference was held from 19 to 22 June 2011 in the King’s Conference Centre at the University of Aberdeen in Scotland (UK), with Prof. John Beattie (Rowett Institute for Nutrition and Health/University of Aberdeen) and Prof. Jörg Feldmann (University of Aberdeen) acting as Conference Chairs. TEF-4 attracted 150 delegates from 39 countries; 38 oral lectures were presented, 13 of which were given by internationally renowned invited speakers. The scientific program also included a poster exhibition with 108 papers and was completed by 9 exhibiting sponsors, including major analytical instrument manufacturers and representatives of reference material laboratories and government institutes.The scientific program comprised four larger themes, each of which was represented by invited speakers and further oral presentations on the following topics:- source and transfer of trace elements into food and feed- trace elements in nutrition and health- toxicology and risk assessment of trace elements in food- analytical advances in trace elements in foodSpecial attention was paid to selenium as an essential element, and a variety of talks explored the toxic actions of arsenic in different foodstuffs and in epidemiology, completed with topics on mercury, zinc, manganese, iodine, cerium, and other trace metals.The collection of papers in this issue of Pure and Applied Chemistry is a representation of the main topics covered in the lectures held during TEF-4, providing an overview of recent advances in research techniques and findings. We hope that it proves a useful source of new and exciting results, leading the way into the future of food analysis, and that fruitful interdisciplinary collaboration will enhance the impact of fundamental and applied research.Eva M. KruppConference Editor
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Abstract
Arsenic (As) occurs in a variety of different chemical forms, among them volatile (gaseous) species, usually referred to as arsine and methylarsines. Here we demonstrate that arsine and methylarsines are stable in air in concentrations at the μg/L gas level. We determined half-lives of approximately 8 h under daytime conditions (UV light) for all methylated arsines, while the same species were found to be considerably more stable in night-time (dark) conditions. Arsine (AsH₃) showed under both day and night-time conditions, considerably higher stabilities than methylated arsines. We show here that volatile As species seem stable enough to travel considerable distances in the atmosphere from a point source before converting into nonvolatile, oxidized compounds. Also, the degradation pathway leading to the conversion to nonvolatile compounds was investigated using computational chemistry. Arsine and methylarsines' reactions with the hydroxyl radical (•OH) as well as As-C and As-H bonds strengths in the species studied were modeled. Results showed that conversion could not be explained by H abstraction, nor by OH addition. Moreover, it was found that As-C and As-H bonds strengths are not the determining factor responsible for the decrease in stability with ascending methylation of the different volatile arsine species, as previously suggested.
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Affiliation(s)
- Adrien Mestrot
- TESLA (Trace Element Speciation Laboratory), Chemistry Department, University of Aberdeen , Aberdeen, AB24 3UE, UK
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Amayo KO, Petursdottir A, Newcombe C, Gunnlaugsdottir H, Raab A, Krupp EM, Feldmann J. Identification and Quantification of Arsenolipids Using Reversed-Phase HPLC Coupled Simultaneously to High-Resolution ICPMS and High-Resolution Electrospray MS without Species-Specific Standards. Anal Chem 2011; 83:3589-95. [DOI: 10.1021/ac2005873] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kenneth O. Amayo
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, Scotland, United Kingdom
| | - Asta Petursdottir
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, Scotland, United Kingdom
- Matis, Icelandic Food and Biotech R&D, Vinlandsleid 12, 113 Reykjavik, Iceland
| | - Chris Newcombe
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, Scotland, United Kingdom
| | | | - Andrea Raab
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, Scotland, United Kingdom
| | - Eva M. Krupp
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, Scotland, United Kingdom
- Aberdeen Centre of Environmental Sustainability, St. Machar Drive, Aberdeen, Aberdeen AB24 3UU, Scotland, United Kingdom
| | - Jörg Feldmann
- Trace Element Speciation Laboratory, Department of Chemistry, Meston Walk, University of Aberdeen, Aberdeen AB24 3UE, Scotland, United Kingdom
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Mestrot A, Feldmann J, Krupp EM, Hossain MS, Roman-Ross G, Meharg AA. Field fluxes and speciation of arsines emanating from soils. Environ Sci Technol 2011; 45:1798-804. [PMID: 21284382 DOI: 10.1021/es103463d] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The biogeochemical cycle of arsenic (As) has been extensively studied over the past decades because As is an environmentally ubiquitous, nonthreshold carcinogen, which is often elevated in drinking water and food. It has been known for over a century that micro-organisms can volatilize inorganic As salts to arsines (arsine AsH(3), mono-, di-, and trimethylarsines, MeAsH(2), Me(2)AsH, and TMAs, respectively), but this part of the As cycle, with the exception of geothermal environs, has been almost entirely neglected because of a lack of suited field measurement approaches. Here, a validated, robust, and low-level field-deployable method employing arsine chemotrapping was used to quantify and qualify arsines emanating from soil surfaces in the field. Up to 240 mg/ha/y arsines was released from low-level polluted paddy soils (11.3 ± 0.9 mg/kg As), primarily as TMAs, whereas arsine flux below method detection limit was measured from a highly contaminated mine spoil (1359 ± 212 mg/kg As), indicating that soil chemistry is vital in understanding this phenomenon. In microcosm studies, we could show that under reducing conditions, induced by organic matter (OM) amendment, a range of soils varied in their properties, from natural upland peats to highly impacted mine-spoils, could all volatilize arsines. Volatilization rates from 0.5 to 70 μg/kg/y were measured, and AsH(3), MeAsH(2), Me(2)AsH, and TMAs were all identified. Addition of methylated oxidated pentavalent As, namely monomethylarsonic acid (MMAA) and dimethylarsinic acid (DMAA), to soil resulted in elevated yearly rates of volatilization with up to 3.5% of the total As volatilized, suggesting that the initial conversion of inorganic As to MMAA limits the rate of arsine and methylarsines production by soils. The nature of OM amendment altered volatilization quantitatively and qualitatively, and total arsines release from soil showed correlation between the quantity of As and the concentration of dissolved organic carbon (DOC) in the soil porewater. The global flux of arsines emanating from soils was estimated and placed in the context of As atmospheric inputs, with arsines contributing from 0.9 to 2.6% of the global budget.
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Affiliation(s)
- Adrien Mestrot
- Institute of Biological and Environmental Sciences, University of Aberdeen, Cruickshank Building, St Machar Drive, Aberdeen AB24 3UU, United Kingdom
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Krupp EM, Merle JK, Haas K, Foote G, Maubec N, Feldmann J. Volatilization of organotin species from municipal waste deposits: novel species identification and modeling of atmospheric stability. Environ Sci Technol 2011; 45:943-950. [PMID: 21174457 DOI: 10.1021/es102512u] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Organotin compounds are used as pesticides and fungicides as well as additives in plastics. This study identifies the de novo generation of novel volatile organotins in municipal waste deposits and their release via landfill gas. Besides tetramethyltin (Me(4)Sn), a strong neurotoxin, and 5 previously reported organotins, 13 novel ethylated, propylated, and butylated tetraalkyltin compounds were identified. A concentration of 2-4 μg of Sn m(-3) landfill gas was estimated for two landfill sites in Scotland. The atmospheric stability of Me(4)Sn and methylated tin hydrides was determined empirically in a static atmosphere in the dark and under UV light to simulate night- and daytime conditions. Theoretical calculations were carried out to help predict the experimentally obtained stabilities and to estimate the relative stabilities of other alkylated species. Assuming first-order kinetics, the atmospheric half-life for Me(3)SnH was found to be 33 ± 16 and 1311 ± 111 h during day- and nighttime conditions, respectively. Polyalkylation and larger alkyl substitutes tend to reduce the atmospheric stability. These results show that substantial concentrations of neurotoxic organotin compounds can be released from landfill sites and are sufficiently stable in the atmosphere to travel over large distances in night- and daytime conditions to populated areas.
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Affiliation(s)
- Eva M Krupp
- Trace Element Speciation Laboratory, Chemistry, College of Physical Science, University of Aberdeen, Aberdeen AB24 3UE, Scotland, United Kingdom.
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Jakob R, Roth A, Haas K, Krupp EM, Raab A, Smichowski P, Gómez D, Feldmann J. Atmospheric stability of arsines and the determination of their oxidative products in atmospheric aerosols (PM10): evidence of the widespread phenomena of biovolatilization of arsenic. ACTA ACUST UNITED AC 2010; 12:409-16. [DOI: 10.1039/b915867g] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mestrot A, Uroic MK, Plantevin T, Islam MR, Krupp EM, Feldmann J, Meharg AA. Quantitative and qualitative trapping of arsines deployed to assess loss of volatile arsenic from paddy soil. Environ Sci Technol 2009; 43:8270-5. [PMID: 19924955 DOI: 10.1021/es9018755] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Arsenic volatilization in the environment is thought to be an important pathway for transfer from terrestrial pools to the atmosphere. However, this phenomenon is not well characterized due to inherent sampling issues in trapping, quantifying and qualifying these arsine gases; including arsine (AsH(3)), monomethyl arsine (MeAsH(2)), dimethyl arsine (Me(2)AsH) and trimethyl arsine (TMAs). To quantify and qualify arsines in air we developed a novel technique based on silver nitrate impregnated silica gel filled tubes. The method was characterized by measuring the recovery of trapped arsines after elution of this chemo-trap with hot boiling diluted nitric acid. Results from three separate experiments, measured by ICP-MS, showed that the method is reproducible and quantitative. Arsine species recovery ranged from 80.1 to 95.6%, with limit of detection as low as 3.8 ng per chemo-trap tube. Moreover, HPLC-ICP-MS analysis of hot boiling water eluted traps showed that the corresponding oxy ions of the arsines were formed with the As-C bonds of the molecule intact, hence, allowing qualification of trapped arsine species. A microcosm study examining volatile arsenic evolution from field contaminated Bangladeshi paddy soils (24.2 mg/kg arsenic) was used to show the application of silver nitrate chemo-trapping approach. Traps were placed on the inlet and the outlet of microcosms containing the soils that were either (cattle derived) manured or not, or flooded or not, in a factorial design. The headspace was purged with air at a flow rate of 12 mL/min. Results showed that as much as 320 ng of arsenic (0.014% of total soil content) could be emitted in a 3 week period for manured and flooded soils and that TMAs was the dominant species evolved, with lesser quantities of Me(2)AsH. No volatile arsenic evolution was observed for nonmanured treatments, and arsine release from the nonflooded, manured treatment was much less than the flooded treatment.
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Affiliation(s)
- Adrien Mestrot
- Institute for Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 3UU, Scotland, U.K
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Krupp EM, Mestrot A, Wielgus J, Meharg AA, Feldmann J. The molecular form of mercury in biota: identification of novel mercury peptide complexes in plants. Chem Commun (Camb) 2009:4257-9. [PMID: 19585039 DOI: 10.1039/b823121d] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The molecular structure of a variety of novel mercury-phytochelatin complexes was evidenced in rice plants exposed to inorganic mercury (Hg2+) using RP-HPLC with simultaneous detection via ICP-MS and ES-MS.
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Affiliation(s)
- E M Krupp
- University of Aberdeen, College of Physical Sciences, Aberdeen Centre of Environmental Sustainability, Meston Walk, Old Aberdeen, Scotland, UK AB24 3UE
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Uroic MK, Krupp EM, Johnson C, Feldmann J. Chemotrapping-atomic fluorescence spectrometric method as a field method for volatile arsenic in natural gas. ACTA ACUST UNITED AC 2009; 11:2222-30. [DOI: 10.1039/b913322d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Krupp EM, Pécheyran C, Meffan-Main S, Donard OFX. Precise isotope-ratio determination by CGC hyphenated to ICP? MCMS for speciation of trace amounts of gaseous sulfur, with SF6 as example compound. Anal Bioanal Chem 2004; 378:250-5. [PMID: 14618293 DOI: 10.1007/s00216-003-2328-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2003] [Revised: 10/02/2003] [Accepted: 10/07/2003] [Indexed: 11/25/2022]
Abstract
Capillary gas chromatography coupled to an inductively coupled plasma mass spectrometer with multiple-collector detection (GC-ICP-MCMS) has been used to assess the precision and instrumental mass bias in sulfur isotope-ratio determination for the gaseous sulfur species SF6. The isotopic composition of the compound was certified by the institute for reference materials and measurements (IRMM, Belgium) and is available as PIGS 2010. Integration of the peaks (peak half-width 1.4 s) was performed using a special peak-integration method based on definition of the integration area by assessment of a uniform isotope-ratio area within the chromatographic peak. Instrumental mass bias was determined to be approximately 12% per mass unit and proved to be stable in the concentration range measured. Replicate injections of 2, 10, 20, and 30 ng (as S) SF6 diluted in argon gave precision for the 32S/34S ratio from 0.6% RSD for 2-ng injections to 0.03% RSD for 30-ng injections. The 32S/33S and 33S/34S isotope-ratio precision was better than 0.4% RSD for injections of 10 ng (as S) and higher. Detection limits were in the absolute pg range for all measured sulfur isotopes.
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Affiliation(s)
- Eva M Krupp
- Helioparc Pau Pyreneés, LCABIE/CNRS, 2 Avenue du President Angot, 64053 Pau, Cedex 9, France.
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Abstract
Metals are released in effluents of most of combustion processes and are under intensive regulations. To improve our knowledge of combustion process and their resulting emission of metal to the atmosphere, we have developed an approach allowing usto distinguish between gaseous and particulate state of the elements emitted. This study was conducted on the emission of volatile metallic species emitted from a coal combustion plant where low/medium volatile coal (high-grade ash) was burnt. The occurrence of volatile metal species emission was investigated by cryofocusing sampling procedure and detection using low-temperature packed-column gas chromatography coupled with inductively coupled plasma-mass spectrometry as multielement detector (LT-GC/ICP-MS). Samples were collected in the stack through the routine heated sampling line of the plant downstream from the electrostatic precipitator. The gaseous samples were trapped with a cryogenic device and analyzed by LT-GC/ICP-MS. During the combustion process, seven volatile metal species were detected: three for Se, one for Sn, two for Hg, and one for Cu. Thermodynamic calculations and experimental metal species spiking experiments suggest that the following volatile metal species are present in the flue gas during the combustion process: COSe, CSSe, CSe2, SeCl2, Hg0, HgCl2, CuO-CuSO4 or CuSO4 x H2O, and SnO2 or SnCl2. The quantification of volatile species was compared to results traditionally obtained by standardized impinger-based sampling and analysis techniques recommended for flue gas combustion characterization. Results showed that concentrations obtained with the standard impinger approach are at least 10 times higher than obtained with cryogenic sampling, suggesting the trapping microaerosols in the traditional methods. Total metal concentrations in particles are also reported and discussed.
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Affiliation(s)
- Marie-Pierre Pavageau
- Laboratoire de Chimie Analytique Bio Inorganique et Environnement, UMR CNRS 5034, Hélioparc Pau Pyrénées, Pau, France
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Krupp EM, Pécheyran C, Meffan-Main S, Donard OF. Precise isotope-ratio measurements of lead species by capillary gas chromatography hyphenated to hexapole Multicollector ICP-MS. Fresenius J Anal Chem 2001; 370:573-80. [PMID: 11496989 DOI: 10.1007/s002160100778] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The precision and accuracy of lead isotope-ratio determination on a short transient signal has been assessed by coupling capillary gas chromatography to the Isoprobe (Micromass, UK), a single-focusing inductively coupled plasma mass spectrometer with multicollector detection. A T-piece connecting the GC transfer line to the torch enabled continuous aspiration of thallium solution for mass-bias correction. The volatile lead species PbEt4 was derivatized from NIST isotopic certified lead standard SRM 981 and different amounts of PbEt4 dissolved in iso-octane were injected into the GC. Chromatograms were recorded in multicollection mode by use of Faraday cups; seven isotopes (204Pb, 206Pb, 207Pb, 208Pb,
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Affiliation(s)
- E M Krupp
- LCABIE/CNRS, Helioparc Pau Pyreneés, France.
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Krupp EM, Grümping R, Furchtbar UR, Hirner AV. Speciation of metals and metalloids in sediments with LTGC/ICP-MS. Anal Bioanal Chem 1996; 354:546-9. [PMID: 15067443 DOI: 10.1007/s0021663540546] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/1995] [Accepted: 08/04/1995] [Indexed: 11/30/2022]
Abstract
Low temperature GC on-line coupled with an ICP/MS has been used as analytical device to detect organometallic and -metalloid compounds from various sediments of rivers and harbours in West Germany. The different species have been volatilized by derivatization with NaBH(4) and cryofocussed in a trap. Different alkylated species of As, Sn and Sb have been identified, while only methylated compounds of the elements Ge, Se, Te, Hg and Bi could be detected.
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Affiliation(s)
- E M Krupp
- Institute of Environmental Analytical Chemistry, University of Essen, D-45117, Essen, Germany
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