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Chen L, Zhong Z, Wu R, Lin Q, Gong Z, Yuan D. On-site monitoring of dissolved Sb species in natural waters by an automatic system using flow injection coupled with hydride generation atomic fluorescence spectrometer. Talanta 2024; 274:126037. [PMID: 38604046 DOI: 10.1016/j.talanta.2024.126037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/23/2024] [Accepted: 04/02/2024] [Indexed: 04/13/2024]
Abstract
Antimony (Sb) is a toxic and potentially carcinogenic element in the environment. The toxicity of Sb(III) is ten times that of Sb(V). Therefore, on-site monitoring technique for dissolved Sb species is crucial for the study of Sb environmental processes. In this study, an automated, portable, and cost-effective system was developed for field simultaneous analysis of Sb(III) and Sb(III + V) in natural waters. The system comprised a portable atomic fluorescence spectrometer equipped with a built-in electrochemical H2 generator to reduce the consumption of acid/borohydride solution and make the atomizer more stable for on-site analysis. Flow injection technique was also used to achieve on-line pretreatment of water samples, including filtration, acidification, pre-reduction, and hydride generation procedures. Under the optimal conditions, the limits of detection (3σ, n = 11) of the developed method were 0.015 μg/L and the linear ranges were 0.05-5.0 μg/L for both Sb(III) and Sb(III + V). The relative standard deviations (n = 11) of the spiked samples of Sb(V) were 3.2% (0.05 μg/L), 3.3% (0.2 μg/L), and 1.7% (0.5 μg/L), respectively. The spiked recoveries of lake water, treated wastewater, and seawater ranged from 97.0% to 108.5%. The novel system of flow injection coupled with hydride generation atomic fluorescence spectrometer (FI-HG-AFS) was applied to carry out an 18-h fixed-point monitoring at a secondary settling tank of a wastewater treatment facility in Xiamen University, and a 6-h real-time underway analysis in the surface seawater of Dongshan Bay, China, proving that the system was capable of long-term monitoring in the field.
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Affiliation(s)
- Luodan Chen
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, PR China; Center for Marine Environmental Chemistry and Toxicology, College of the Environment & Ecology, Xiamen University, Xiamen, 361102, PR China
| | - Ziyun Zhong
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, PR China
| | - Rongkun Wu
- Tairui Science and Technology Co., Ltd., Quanzhou, 362000, PR China
| | - Qinglin Lin
- Tairui Science and Technology Co., Ltd., Quanzhou, 362000, PR China
| | - Zhenbin Gong
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, PR China; Center for Marine Environmental Chemistry and Toxicology, College of the Environment & Ecology, Xiamen University, Xiamen, 361102, PR China.
| | - Dongxing Yuan
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, PR China.
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Banerjee M, Kalwani P, Chakravarty D, Pathak P, Agarwal R, Ballal A. Modulation of oxidative stress machinery determines the contrasting ability of cyanobacteria to adapt to Se(VI) or Se(IV). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 211:108673. [PMID: 38733937 DOI: 10.1016/j.plaphy.2024.108673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/23/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024]
Abstract
Excess of selenium (Se) in aquatic ecosystems has necessitated thorough investigations into the effects/consequences of this metalloid on the autochthonous organisms exposed to it. The molecular details of Se-mediated adaptive response remain unknown in cyanobacteria. This study aims to uncover the molecular mechanisms driving the divergent physiological responses of cyanobacteria on exposure to selenate [Se(VI)] or selenite [Se(IV)], the two major water-soluble oxyanions of Se. The cyanobacterium, Anabaena PCC 7120, withstood 0.4 mM of Se(VI), whereas even 0.1 mM of Se(IV) was detrimental, affecting photosynthesis and enhancing endogenous ROS. Surprisingly, Anabaena pre-treated with Se(VI), but not Se(IV), showed increased tolerance to oxidative stress mediated by H2O2/methyl viologen. RNA-Seq analysis showed Se(VI) to elevate transcription of genes encoding anti-oxidant proteins and Fe-S cluster biogenesis, whereas the photosynthesis-associated genes, which were mainly downregulated by Se(IV), remained unaffected. Specifically, the content of typical 2-Cys-Prx (Alr4641), a redox-maintaining protein in Anabaena, was elevated with Se(VI). In comparison to the wild-type, the Anabaena strain over-expressing the Alr4641 protein (An4641+) showed enhanced tolerance to Se(VI) stress, whereas the corresponding knockdown-strain (KD4641) was sensitive to this stressor. Incidentally, among these strains, only An4641+ was better protected from the ROS-mediated damage caused by high dose of Se(VI). These results suggest that altering the content of the antioxidant protein 2-Cys-Prx, could be a potential strategy for modulating resistance to selenate. Thus, involvement of oxidative stress machinery appears to be the major determinant, responsible for the contrasting physiological differences observed in response to selenate/selenite in cyanobacteria.
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Affiliation(s)
- Manisha Banerjee
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai-400085, India; Homi Bhabha National Institute, Mumbai-400094, India.
| | - Prakash Kalwani
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai-400085, India
| | - Dhiman Chakravarty
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai-400085, India
| | - Priyanka Pathak
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai-400085, India; Homi Bhabha National Institute, Mumbai-400094, India
| | - Rachna Agarwal
- Applied Genomics Section, Bhabha Atomic Research Centre, Mumbai-400085, India; Homi Bhabha National Institute, Mumbai-400094, India
| | - Anand Ballal
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai-400085, India; Homi Bhabha National Institute, Mumbai-400094, India.
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Chen L, Lin Q, Yuan D, Gong Z. Simultaneous Measurement of Trace Levels of Hg, As, Sb, and Bi in Coastal Seawater with a Multichannel Chemical Vapor Generation Atomic Fluorescence Spectrometer. Anal Chem 2023; 95:15621-15627. [PMID: 37816153 DOI: 10.1021/acs.analchem.3c02755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2023]
Abstract
Trace levels of Hg, As, Sb, and Bi in coastal seawater have been simultaneously detected by a laboratory-built multichannel chemical vapor generation coupled to an atomic fluorescence spectrometer. The system was configured with a built-in electrochemical H2 generator as the fuel supplier to replace chemical H2 produced by the oxidation of potassium borohydride under acidic conditions in traditional instruments. The electrochemical H2 generator not only isolated the atomization process from the chemical vapor injection process but also improved the stability of atomization, excitation, and fluorescence emission in the hydrogen flame, making it easier to optimize conditions for CVG while introducing evaporating multielement vapors. Calibrations were obtained using a mixed standard solution of Hg(II), As(III), Sb(III), and Bi(III). The addition of KBr to a 3% (v/v) HCl solution was selected as the preservative to ensure the stability of 0.10 μg/L Hg(II) in a multielement standard solution for at least 15 days while also preserving μg/L levels of As(III), Sb(III), and Bi(III) stable. The method detection limits (LOD, 3σ) were 0.001, 0.015, 0.010, and 0.005 μg/L for Hg, As, Sb, and Bi, respectively. The relative standard deviations (RSD, n = 7) of the standard spiked seawater samples were 3.2% (0.020 μg/L Hg), 1.2% (0.50 μg/L As), 1.0% (0.50 μg/L Sb), and 3.5% (0.050 μg/L Bi), respectively. The recoveries of seawater samples spiked with different salinities were in the range of 84.5%(Sb)-114%(Hg). The system has been successfully applied to the simultaneous analysis of the four elements in the seawater samples collected from Xiamen Bay, Southeast China.
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Affiliation(s)
- Luodan Chen
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, PR China
- Center for Marine Environmental Chemistry and Toxicology, College of the Environment & Ecology, Xiamen University, Xiamen 361102, PR China
| | - Qinling Lin
- Tairui Science and Technology Co., Ltd., Quanzhou 362000, PR China
| | - Dongxing Yuan
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, PR China
| | - Zhenbin Gong
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, PR China
- Center for Marine Environmental Chemistry and Toxicology, College of the Environment & Ecology, Xiamen University, Xiamen 361102, PR China
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Tostes ECL, de Souza Viana LM, Agostinho KFF, de Almeida CMS, de Carvalho CEV. Trace element bioaccumulation in the hepatic tissue of juvenile green turtles (Chelonia mydas) stranded along the Campos and Espírito Santo basins, southeastern Brazil. MARINE POLLUTION BULLETIN 2023; 195:115447. [PMID: 37716129 DOI: 10.1016/j.marpolbul.2023.115447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 08/17/2023] [Accepted: 08/21/2023] [Indexed: 09/18/2023]
Abstract
This study analyzed the concentrations of 15 (Al, As, Ba, Cd, Cr, Cu, Fe, Hg, Mn, Mo, Ni, Pb, Se, V, Zn) toxicologically important trace elements in the livers of 110 green turtles stranded in two areas of the Brazilian coast. These areas are essential for the refuge, feeding, and reproduction of the species, and the information obtained is intended to support the development of conservation strategies. Higher concentrations were observed in the Região dos Lagos, RJ in almost all elements, except for Al, Mo, Pb, and V. This location showed statistically higher differences in the concentrations of Cd (4.66 ± 2.33 μg.g-1), Fe (846.62 ± 583.06 μg.g-1), and Zn (27.17 ± 10.90 μg.g-1). The differences in trace element concentration patterns between the two study areas are likely influenced by multiple factors, including the bioavailability of trace elements, oceanic upwelling events, anthropogenic activities, habitat characteristics, and organism-specific metabolic processes.
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Affiliation(s)
- Eloá Corrêa Lessa Tostes
- Universidade Estadual do Norte Fluminense Darcy Ribeiro, Laboratório de Ciências Químicas, Centro de Ciência e Tecnologia, Av. Alberto Lamego, 2000 - Parque Califórnia -28013-602, Campos dos Goytacazes, Rio de Janeiro, Brazil.
| | - Luísa Maria de Souza Viana
- Universidade Estadual do Norte Fluminense Darcy Ribeiro, Laboratório de Ciências Ambientais, Centro de Biociências e Biotecnologia, Av. Alberto Lamego, 2000 - Parque Califórnia -28013-602, Campos dos Goytacazes, Rio de Janeiro, Brazil
| | - Karoline Fernanda Ferreira Agostinho
- Universidade Estadual do Norte Fluminense Darcy Ribeiro, Laboratório de Ciências Ambientais, Centro de Biociências e Biotecnologia, Av. Alberto Lamego, 2000 - Parque Califórnia -28013-602, Campos dos Goytacazes, Rio de Janeiro, Brazil
| | - Cibele Maria Stivanin de Almeida
- Universidade Estadual do Norte Fluminense Darcy Ribeiro, Laboratório de Ciências Químicas, Centro de Ciência e Tecnologia, Av. Alberto Lamego, 2000 - Parque Califórnia -28013-602, Campos dos Goytacazes, Rio de Janeiro, Brazil
| | - Carlos Eduardo Veiga de Carvalho
- Universidade Estadual do Norte Fluminense Darcy Ribeiro, Laboratório de Ciências Ambientais, Centro de Biociências e Biotecnologia, Av. Alberto Lamego, 2000 - Parque Califórnia -28013-602, Campos dos Goytacazes, Rio de Janeiro, Brazil
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La Colla NS, Botté SE, Ronda AC, Menendez MC, Arias AH, Vitale AJ, Piccolo MC. Insights on metal pollution of a Patagonia watershed: A case study in the lower course of the Negro river, Argentina. CHEMOSPHERE 2023; 323:138234. [PMID: 36842557 DOI: 10.1016/j.chemosphere.2023.138234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 02/13/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
This study evaluated the occurrence and distribution of largely known pollutants (Ag, Cd, Cu, Cr, Hg, Ni, Pb, Pd, and Zn), as well as emerging ones (Li, and V) in the water dissolved fraction, suspended particulate matter, and surface sediments from the lower course of the Negro River, Argentina. There are scarce preceding data on inorganic pollution in the entire watershed and, in the case of the emerging pollutants, there are almost no studies performed worldwide. Sampling was conducted in 2019 at six sampling sites, three of them mostly river dominated and the rest under marine domain. The samples were subjected to an acid digestion in a microwave digester, and analyzed using an Inductively Coupled Plasma Atomic Emission Spectrometer. Results: revealed that Cu, Li, V, and Zn were always on the top four of the highest average metal concentrations in water and sediment fractions. The pollution assessment indicated that the watershed might be exposed to anthropogenic pollution, as over 60% of Cu and Zn, and over 85% of Hg in water dissolved samples from the marine dominated sites were above the maximum recommended values from guidelines. The multivariate analyses characterized the watershed into two clusters, with metals in the sediment fraction mainly contributing to the uppermost sites. Indeed, sedimentary Cu and Zn background enrichment indices pointed out a moderate pollution of the river dominated sites. This study highlights the relevance of an integrative approach in metal pollution evaluation, as the results denoted a progressive deterioration of the watershed, affecting the water quality of the lower course of the Negro River and its adjacent coastal zone. Overall, these results contribute to a more complete evaluation of the potential to fulfill the Sustainable Development Goals, with implications for future treatment strategies to enhance the environmental quality of the area.
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Affiliation(s)
- Noelia S La Colla
- Instituto Argentino de Oceanografía (IADO/CONICET/UNS), Bahía Blanca, 8000, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, 1425, Argentina; Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Bahía Blanca, 8000, Argentina.
| | - Sandra E Botté
- Instituto Argentino de Oceanografía (IADO/CONICET/UNS), Bahía Blanca, 8000, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, 1425, Argentina; Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Bahía Blanca, 8000, Argentina
| | - Ana C Ronda
- Instituto Argentino de Oceanografía (IADO/CONICET/UNS), Bahía Blanca, 8000, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, 1425, Argentina; Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Bahía Blanca, 8000, Argentina
| | - María C Menendez
- Instituto Argentino de Oceanografía (IADO/CONICET/UNS), Bahía Blanca, 8000, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, 1425, Argentina
| | - Andrés H Arias
- Instituto Argentino de Oceanografía (IADO/CONICET/UNS), Bahía Blanca, 8000, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, 1425, Argentina; Departamento de Química, Universidad Nacional del Sur, Bahía Blanca, 8000, Argentina
| | - Alejandro J Vitale
- Instituto Argentino de Oceanografía (IADO/CONICET/UNS), Bahía Blanca, 8000, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, 1425, Argentina; Departamento de Geografía y Turismo, Universidad Nacional del Sur, Bahía Blanca, 8000, Argentina; Departamento de Ingeniería Eléctrica y de Computadoras, Universidad Nacional del Sur, Bahía Blanca, 8000, Argentina
| | - María C Piccolo
- Instituto Argentino de Oceanografía (IADO/CONICET/UNS), Bahía Blanca, 8000, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, 1425, Argentina; Departamento de Geografía y Turismo, Universidad Nacional del Sur, Bahía Blanca, 8000, Argentina
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6
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Singh P, Singh S, Maurya P, Mohanta A, Dubey H, Khadim SR, Singh AK, Pandey AK, Singh AK, Asthana RK. Bioaccumulation of selenium in halotolerant microalga Dunaliella salina and its impact on photosynthesis, reactive oxygen species, antioxidative enzymes, and neutral lipids. MARINE POLLUTION BULLETIN 2023; 190:114842. [PMID: 36965269 DOI: 10.1016/j.marpolbul.2023.114842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 03/10/2023] [Accepted: 03/14/2023] [Indexed: 06/18/2023]
Abstract
Selenium (Se) is an essential element for living systems, however, toxic at higher levels. In the present study, Dunaliella salina cells were exposed to different Se concentrations for their growth (EC50 195 mg L-1) as well as Se accumulation. The cells exposed to 50 mg L-1 Se showed photoautotrophic growth parallel to control and accumulated 65 μg Se g-1 DW. A decrease in photosynthetic quantum yield, chlorophyll content, and the increase in intracellular reactive oxygen species, proline content, and lipid peroxidation accompanied by higher neutral lipid accumulation, were recorded at higher Se level. The enzymes superoxide dismutase and catalase played a pivotal role in antioxidative defense. Heterogeneity in accumulated carotenoids at varying concentrations of selenium was prevalent. The cells exposed to 200 mg L-1 Se resulted in the disorganization of organelles. Thus, the Se enriched biomass obtained at 50 mg L-1 may be explored for bio-fortification of food and feed.
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Affiliation(s)
- Prabhakar Singh
- Biochemistry Department, North Eastern Hill University, Shillong 793022, India
| | - Sakshi Singh
- Interdisciplinary School of Life Sciences, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Priyanka Maurya
- Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India
| | - Abhishek Mohanta
- Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India
| | - Hardik Dubey
- Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India
| | - Sk Riyazat Khadim
- Department of Botany, Model Degree College, Nabarangpur, Odisha 764063, India
| | - Ankit K Singh
- Department of Botany, Marwari College (a Constituent Unit of Lalit Narayan Mithila University), Darbhanga 846004, India
| | - Adarsh K Pandey
- Sophisticated Analytical and Technical Help Institute (SATHI), Banaras Hindu University, Varanasi 221005, India
| | - Arvind K Singh
- Biochemistry Department, North Eastern Hill University, Shillong 793022, India
| | - Ravi K Asthana
- Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India.
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7
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Li P, Li S, Yuan D, Lin K. On-site and high-resolution spectrophotometric measurement of total dissolved sulfide in natural waters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 863:160919. [PMID: 36529398 DOI: 10.1016/j.scitotenv.2022.160919] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 12/10/2022] [Accepted: 12/10/2022] [Indexed: 06/17/2023]
Abstract
Reliable high-resolution data is essential for understanding the aquatic sulfur biogeochemical processes. However, the accurate quantification of total dissolved sulfide (TDS) remains challenging due to its low concentration and vulnerability to oxidation. Furthermore, the frequency and the spatial coverage of TDS measurements are constrained by the cost of the laboratory analysis. In this study, an automated portable system was developed for on-site real-time measurement of trace TDS in natural waters. This system was based on the classic methylene blue (MB) spectrophotometric assay combined with on-line solid phase extraction (SPE) and flow injection analysis (FIA). A commercially available weak-cation-exchange cartridge was used as the SPE sorbent. Experimental parameters affecting the performance of the proposed system were optimized. Under the optimized conditions, linear calibration range of 0.02-2.50 μmol L-1 was obtained with a sample loading volume of 5.0 mL and a sample throughput of 12 h-1. The limit of detection could be lowered to 0.003 μmol L-1 by pre-concentrating 10.0 mL sample. The precision, determined as the relative standard deviation (RSD), was <2.75 % (n = 11) and the recoveries from spiked samples ranged from 54.4 % to 97.5 % with RSDs of 1.1-2.3 % (n = 3). Furthermore, the FIA-SPE-MB system was successfully deployed in the Taihu Lake for continuous 48 h monitoring of variations in TDS, demonstrating the applicability of this system for on-site TDS measurement in natural waters.
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Affiliation(s)
- Peng Li
- Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen 361102, PR China; College of the Environment and Ecology, Xiamen University, Xiamen 361102, PR China
| | - Songtao Li
- Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen 361102, PR China; College of the Environment and Ecology, Xiamen University, Xiamen 361102, PR China
| | - Dongxing Yuan
- Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen 361102, PR China; College of the Environment and Ecology, Xiamen University, Xiamen 361102, PR China
| | - Kunde Lin
- Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen 361102, PR China; College of the Environment and Ecology, Xiamen University, Xiamen 361102, PR China.
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8
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Kuznetsova OV, Keppler BK, Timerbaev AR. Seawater analysis of engineered nanoparticles using ICP-MS-based technology: Addressing challenges with the development of reliable monitoring strategy. Talanta 2023; 252:123846. [DOI: 10.1016/j.talanta.2022.123846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/03/2022] [Accepted: 08/12/2022] [Indexed: 11/29/2022]
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9
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Cheng R, Zhang Z, Zhan C, Qin T, Wang L, Zhang X. Environmentally relevant concentrations of selenite trigger reproductive toxicity by affecting oocyte development and promoting larval apoptosis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120648. [PMID: 36375579 DOI: 10.1016/j.envpol.2022.120648] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/09/2022] [Accepted: 11/10/2022] [Indexed: 06/16/2023]
Abstract
As a trace element, selenium (Se) has been widely added to food to maintain the physiological homeostasis of the organism. The adverse effects of Se on the reproduction of zebrafish have been investigated, however, the effects of Se on the maturation and apoptosis of zebrafish oocytes remain unclear. In this study, zebrafish embryos (2 h post fertilization, hpf) were exposed to 0, 12.5, 25, 50, and 100 μg Se/L for 120 days. The results demonstrated that exposure to selenite decreased the gonad-somatic index (GSI) and cumulative production of eggs, inhibited oocyte maturation (OM), and increased oocyte apoptosis in females. Exposure to selenite decreased the contents of sex hormones (E2) in the serum and increased the levels of reactive oxygen species (ROS) and cyclic adenosine monophosphate (cAMP) in the ovary. Furthermore, exposure to selenite downregulated the transcription level of genes on the HPG axis, decreased the phosphorylation level of CyclinB and the protein content of cAMP-dependent protein kinase (Pka), and upregulated the expression of genes (eif2s1a and chop) and proteins (Grp78, Chop) related to endoplasmic reticulum stress (ERS) and apoptosis. Moreover, maternal exposure to selenite resulted in the apoptosis of offspring and upregulated the content of ROS and the transcription level of genes related to ERS and apoptosis.
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Affiliation(s)
- Rui Cheng
- College of Fisheries, Huazhong Agricultural University; Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education; Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan, 430070, China; Key Laboratory of Ecological Impacts of Hydraulic-Projects and Restoration of Aquatic Ecosystem of Ministry of Water Resources, Institute of Hydroecology, MWR & CAS, Wuhan, 430070, China; Hubei Hongshan Laboratory, Wuhan, 430070, China
| | - Zhiming Zhang
- Key Laboratory of Ecological Impacts of Hydraulic-Projects and Restoration of Aquatic Ecosystem of Ministry of Water Resources, Institute of Hydroecology, MWR & CAS, Wuhan, 430070, China
| | - Chunhua Zhan
- College of Fisheries, Huazhong Agricultural University; Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education; Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan, 430070, China
| | - Tianlong Qin
- College of Fisheries, Huazhong Agricultural University; Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education; Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan, 430070, China
| | - Li Wang
- College of Fisheries, Huazhong Agricultural University; Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education; Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan, 430070, China; Hubei Hongshan Laboratory, Wuhan, 430070, China
| | - Xuezhen Zhang
- College of Fisheries, Huazhong Agricultural University; Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education; Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan, 430070, China; Hubei Hongshan Laboratory, Wuhan, 430070, China.
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10
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Cheng R, Zhang J, He Y, Liao C, Wang L, Zhang X. Parental exposure to waterborne selenite induces transgenerational development toxicity in zebrafish offspring. CHEMOSPHERE 2022; 303:134838. [PMID: 35561769 DOI: 10.1016/j.chemosphere.2022.134838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 04/28/2022] [Accepted: 04/30/2022] [Indexed: 06/15/2023]
Abstract
Excessive selenium (Se), especially selenite form exerts great toxicity to fish. Most studies have attached considerable attention to the adverse effects of Se on parental fish. However, the transgenerational toxicity of Se on fish has been rarely reported. In the present study, zebrafish embryos were exposed to environmentally relevant concentrations of Na₂SeO₃ (0, 12.5, 25, 50, and 100 μg/L) for 120 days. And the exposed zebrafish (F0) were allowed to spawn with normal zebrafish after sexual maturity. Subsequently, the offspring (F1) were cultured in clean water for 5 days. In the F0 generation, exposure to 100 μg/L Na₂SeO₃ significantly increased the Se content in the tissues (liver, brain and gonad) and decreased the body length and weight. After parental exposure to 100 μg/L Na₂SeO₃, the increased mortality, elevated malformation rate and reduced body length were measured in F1 zebrafish. The Se content was only significantly increased in F1 larvae derived from exposed females in the 100 μg/L exposure group. The contents of thyroid hormones (THs), growth hormone (GH) and insulin-like growth factor (IGF) significantly decreased in F0 and F1 zebrafish. The transcriptional levels of genes along the hypothalamic-pituitary-thyroid (HPT) axis and growth hormone/insulin-like growth factor (GH/IGF) axis were detected to further explore the possible mechanisms of Se-induced thyroid and growth hormone disruption. The results suggest that the toxicity of Se in zebrafish can be markedly transmitted to offspring. And the transgenerational development toxicity might be different due to the differences in gender of exposed parents.
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Affiliation(s)
- Rui Cheng
- College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China; Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, People's Republic of China; Key Laboratory of Environment Correlative Dietology, Ministry of Education, Wuhan, 430070, People's Republic of China
| | - Jinying Zhang
- College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China; Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, People's Republic of China
| | - Ya He
- College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China; Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, People's Republic of China
| | - Chenlei Liao
- College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China; Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, People's Republic of China
| | - Li Wang
- College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China; Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, People's Republic of China; Key Laboratory of Environment Correlative Dietology, Ministry of Education, Wuhan, 430070, People's Republic of China
| | - Xuezhen Zhang
- College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China; Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, People's Republic of China; Key Laboratory of Environment Correlative Dietology, Ministry of Education, Wuhan, 430070, People's Republic of China.
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11
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Şanlıer Uçak Ş, Aydın A. A novel thiourea derivative for preconcentration of copper(II), nickel(II), cadmium(II), lead(II) and iron(II) from seawater samples for Flame Atomic Absorption Spectrophotometry. MARINE POLLUTION BULLETIN 2022; 180:113787. [PMID: 35659666 DOI: 10.1016/j.marpolbul.2022.113787] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 05/16/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
A novel adsorbent, 3-phenyl-1-(2-pyridyl)thiourea (PPTU) was synthesized and its adsorption capabilities were studied for Cu(II), Cd(II), Ni(II), Pb(II) and Fe(II) cations in the waters such as tap and polluted seawaters. The kinetics, Langmuir and Freundlich isotherms were discussed related to the adsorptions. The adsorption capacities of PPTU were found 9.4; 12.6; 90.9; 57.1 and 30.4 mg g-1 and preconcentration with PPTU including the FAAS step yielded the LOQ values 0.46; 2.65; 1.12; 2.65 and 1.72 ng mL-1 for Cu(II), Cd(II), Ni(II), Pb(II) and Fe(II), respectively. The adsorbent after the elutions and washings could be reused three times in the next adsorptions. The interferences on the adsorptions arising from the major cations of the seawater and the usability of PPTU for interested metals in the seawater were discussed. The proposed method is simple with highly efficient and green preconcentration procedure for trace analysis of the target metal ions.
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Affiliation(s)
- Şengül Şanlıer Uçak
- Recep Tayyip Erdogan University, Turgut Kiran Maritime Faculty, Department of Maritime Transportation Management Engineering, Turkey.
| | - Adnan Aydın
- Demiroğlu Bilim University, Faculty of Health Sciences, Turkey.
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12
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Mulholland DS, Garnier J, Araújo DF, Duarte WC, Monvoisin G, Quantin C, Freydier R, Seyler P. New insights into metal(loid) dynamics in the Doce River estuary (Brazil) after a massive iron ore-processing tailing dam collapse. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:43072-43088. [PMID: 35091935 DOI: 10.1007/s11356-021-18101-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 12/09/2021] [Indexed: 06/14/2023]
Abstract
The present study investigated metal and metalloid dynamics in the estuarine water of the Doce River (Brazil) after the collapse of an iron ore-processing tailing dam in 2015. Spectroscopic and isotopic techniques were applied to bring new insights into the effects of the dam failure on the dynamics and hazardousness of particulate and dissolved metal(loid) concentrations along the fluvial-estuarine continuum. Spectroscopic analysis showed that the suspended particulate matter (SPM) of the Doce River estuary consisted of a combination of soil-delivered particles and fine tailing mud particles with small amounts of coarse tailing mud Fe oxides (~150-μm width). Enrichment and contamination factors showed that the dam failure increased particulate Fe, Pb, Cd, and As, and dissolved Pb concentrations. Total concentrations of As (15 μg/L), Pb (30 μg/L), Cd (8 μg/L), and Cr (105 μg/L) increased up to values higher than quality and regulatory guidelines. Human health risk assessment showed that local communities are exposed to a potentially chronic Cr noncarcinogenic effects, although Cr high concentrations were not linked with the dam failure by this study. The particulate Pb isotope signatures reported herein (206/207Pb ratios of 1.214 ± 0.006 and 208/206Pb ratios of 2.025 ± 0.011) can be applied to constrain metal(loid) sources in the Doce River sediment plume and continental shelf. The river-ocean mixing zone caused abrupt changes metal(loid) partitioning (Zn, Pb, Cr, Cu, Cd, and As), controlling their fate in the estuary and the Brazilian southeast coastal.
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Affiliation(s)
- Daniel Santos Mulholland
- Laboratório de Análises Ambientais-Química Ambiental, Universidade Federal de Tocantins, Rua Badejós, Lote 7, Chácaras 69/72, Gurupi, TO, 77402-970, Brazil.
| | - Jeremie Garnier
- Laboratório de Geoquímica-Instituto de Geociências, Universidade de Brasília, Campus Darcy Riberio, Brasília, DF, 70910-900, Brazil
- Laboratoire Mixte International "Observatoire des Changements Environnementaux" (LMI OCE), Institut de Recherche pour le Développement/University of Brasilia, Campus Darcy Ribeiro, Brasilia, Brazil
| | - Daniel Ferreira Araújo
- Laboratoire de Biogéochimie des Contaminants Métalliques (LBCM), Centre Atlantique, Nantes Cedex 3, F44311, Ifremer, France
| | - Welton Climaco Duarte
- Laboratório de Análises Ambientais-Química Ambiental, Universidade Federal de Tocantins, Rua Badejós, Lote 7, Chácaras 69/72, Gurupi, TO, 77402-970, Brazil
| | - Gael Monvoisin
- UMR 8148 GEOPS, Université Paris-Saclay-CNRS, 91405, Cedex, France
| | - Cecile Quantin
- UMR 8148 GEOPS, Université Paris-Saclay-CNRS, 91405, Cedex, France
| | - Remi Freydier
- Hydrosciences Montpellier, Institut de Recherche pour le développement, Centre National de la Recherche Scientifique, Université de Montpellier, Montpellier, France
| | - Patrick Seyler
- Hydrosciences Montpellier, Institut de Recherche pour le développement, Centre National de la Recherche Scientifique, Université de Montpellier, Montpellier, France
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13
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Zhao G, Zhu Y, Hu J, Gao M, Hong Y. l-selenomethionine induces zebrafish embryo cardiovascular defects via down-regulating expression of lrp2b. CHEMOSPHERE 2022; 290:133351. [PMID: 34933029 DOI: 10.1016/j.chemosphere.2021.133351] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 12/12/2021] [Accepted: 12/15/2021] [Indexed: 06/14/2023]
Abstract
Selenium plays crucial roles in maintaining the growth and development of vertebrates including humans. However, excessive selenium in cells will lead to developmental defects and disease. Selenium has been reported to cause severe malformation in zebrafish embryos, but there are few studies on the mechanism of selenium excess-induced cardiovascular defects. In this study, the fertilized zebrafish embryos were treated with selenium for 96 h post fertilization (hpf). Under selenium stress, wild-type embryos showed pericardial edema, heart rate decrease, ectopic accumulation of hemoglobin; fli1-eGFP transgenic zebrafish displayed intersegmental vessel injury; and myl7-eGFP transgenic zebrafish exhibited atrial area increase. RNA-seq data and qRT-PCR results indicated that the expressions of cardiovascular development genes were up-regulated in selenium-stressed embryos. The expressions of lipid metabolism-related and selenium metabolism-related genes were evaluated in embryos. Among the tested genes, the expression of lrp2b was down-regulated in both 24 hpf and 96 hpf embryos. Furthermore, lrp2b-knockdown embryos exhibited the cardiac defects similar to selenium-stress embryos, and the over-expression of lrp2b rescued the selenium-induced defects, indicating that lrp2b might play a key role in regulating selenium cardiotoxicity. In summary, our research evaluates the cardiotoxicity of excessive selenium, and reveals the molecular mechanism of cardiovascular defects in selenium-exposed zebrafish embryos.
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Affiliation(s)
- Guang Zhao
- School of Life science, Key Laboratory of Aquatic Resources and Utilization of Jiangxi, Nanchang University, Nanchang, 330031, China
| | - Yuejie Zhu
- School of Life science, Key Laboratory of Aquatic Resources and Utilization of Jiangxi, Nanchang University, Nanchang, 330031, China
| | - Jun Hu
- School of Life science, Key Laboratory of Aquatic Resources and Utilization of Jiangxi, Nanchang University, Nanchang, 330031, China
| | - Meng Gao
- School of Life science, Key Laboratory of Aquatic Resources and Utilization of Jiangxi, Nanchang University, Nanchang, 330031, China
| | - Yijiang Hong
- School of Life science, Key Laboratory of Aquatic Resources and Utilization of Jiangxi, Nanchang University, Nanchang, 330031, China.
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14
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Gopi N, Rekha R, Vijayakumar S, Liu G, Monserrat JM, Faggio C, Nor SAM, Vaseeharan B. Interactive effects of freshwater acidification and selenium pollution on biochemical changes and neurotoxicity in Oreochromis mossambicus. Comp Biochem Physiol C Toxicol Pharmacol 2021; 250:109161. [PMID: 34375731 DOI: 10.1016/j.cbpc.2021.109161] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 07/29/2021] [Accepted: 08/01/2021] [Indexed: 12/01/2022]
Abstract
Effect of selenium and acidification in freshwater environment was assessed solitary but no reports are available on the impacts of both factors act together. In the present study, effects of combined simultaneous exposure to selenium (Se) and low pH were assessed in Mozambique tilapia, Oreochromis mossambicus. Responses were measured based on antioxidant defenses (enzymatic SOD, CAT, GPx and non-enzymatic GSH), biotransformation enzyme (GST), metallothionein levels (MT), oxidative damage (LPO, CP), Na+/K+-ATPase (NKA) activity in gills and liver tissues and neurotoxicity (acetylcholinesterase, AChE) response in brain tissue. Fish were exposed to combined treatment at different pH levels (7.5, control (optimum pH for tilapia growth); 5.5, low pH) and Se concentrations (0, 10, and 100 μg L-1). Toxicity levels of Se were not significantly different under control and low pH indicating that pH did not affect Se toxicity. Levels of GSH and MT were enhanced in Se-exposed fish at both pH. Combined effects of high Se concentration and low pH decreased SOD and CAT activities and increased those of GPx and GST. However, organisms were not able to prevent cellular damage (LPO and CP), indicating a condition of oxidative stress. Furthermore, inhibition of Na+/K+-ATPase activity was showed. Additionally, neurotoxicity effect was observed by inhibition of cholinesterase activity in organisms exposed to Se at both pH conditions. As a result, the combined stress of selenium and freshwater acidification has a slight impact on antioxidant defense mechanisms while significantly inhibiting cholinesterase and Na+/K + -ATPase activity in fish. The mechanisms of freshwater acidification mediating the toxic effects of trace non-metal element on freshwater fish need to investigate further.
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Affiliation(s)
- Narayanan Gopi
- Biomaterials and Biotechnology in Animal Health Lab, Department of Animal Health and Management, Science Campus 6(th) Floor, Alagappa University, Karaikudi 630004, Tamil Nadu, India
| | - Ravichandran Rekha
- Biomaterials and Biotechnology in Animal Health Lab, Department of Animal Health and Management, Science Campus 6(th) Floor, Alagappa University, Karaikudi 630004, Tamil Nadu, India
| | - Sekar Vijayakumar
- Biomaterials and Biotechnology in Animal Health Lab, Department of Animal Health and Management, Science Campus 6(th) Floor, Alagappa University, Karaikudi 630004, Tamil Nadu, India; Marine College, Shandong University, Weihai 264209, PR China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - José Maria Monserrat
- Universidade Federal do Rio Grande- FURG, Instituto de Ciências Biológicas (ICB), Programa de Pós-graduação em Aquacultura, Rio Grande, RS, Brazil
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Italy
| | - Siti Azizah Mohd Nor
- Institute of Marine Biotechnology, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia
| | - Baskaralingam Vaseeharan
- Biomaterials and Biotechnology in Animal Health Lab, Department of Animal Health and Management, Science Campus 6(th) Floor, Alagappa University, Karaikudi 630004, Tamil Nadu, India.
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15
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Feng S, Wu J, Chen G. Determination of Picomolar Titanium in Seawater by Isotope Dilution Multicollector Inductively Coupled Plasma Mass Spectrometry after Mg(OH) 2 Coprecipitation. Anal Chem 2021; 93:13118-13125. [PMID: 34546057 DOI: 10.1021/acs.analchem.0c04381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new isotope dilution inductively coupled plasma mass spectrometry (ICPMS) method is developed to determine picomolar concentrations of titanium (Ti) in seawater. The method applies Mg(OH)2 coprecipitation to concentrate Ti from seawater, and uses a new 49Ti-47Ti isotope dilution to eliminate the need for separating Ti from seawater Ca, resulting in an isobaric interference-free analysis by high-resolution multicollector ICPMS. The method uses a 1.8 mL seawater sample with a detection limit of 1.6 pmol L-1 that is determined mainly by Ti contamination during sample preparation rather than by ICPMS sensitivity, instrumental Ti background, or isobaric interferences. An oceanographically consistent vertical profile of dissolved Ti in the Sargasso Sea near Bermuda is measured with this method.
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Affiliation(s)
- Sichao Feng
- Rosenstiel School of Marine and Atmospheric Science, University of Miami, Coral Gables, 33149 Florida, United States
| | - Jingfeng Wu
- Rosenstiel School of Marine and Atmospheric Science, University of Miami, Coral Gables, 33149 Florida, United States
| | - Gedun Chen
- Rosenstiel School of Marine and Atmospheric Science, University of Miami, Coral Gables, 33149 Florida, United States
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16
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Chen L, Xu J, Wang T, Huang Y, Yuan D, Gong Z. Toward a versatile flow technique: Development and application of reverse flow dual-injection analysis (rFDIA) for determining dissolved iron redox species and soluble reactive phosphorus in seawater. Talanta 2021; 232:122404. [PMID: 34074395 DOI: 10.1016/j.talanta.2021.122404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 03/28/2021] [Accepted: 04/02/2021] [Indexed: 11/26/2022]
Abstract
A versatile flow analyzer that extended the features of reverse flow injection analysis (rFIA) was developed in this study and named reverse flow dual-injection analysis (rFDIA). Compared with typical rFIA, the analyzer requires less reagent and is more environmentally friendly, which has two injection valves and two reagent loops for the accurate and successive injection of two reagents. With a 2-m long liquid waveguide capillary cell (LWCC) and a spectrophotometer, the analyzer was applied to underway determination of dissolved iron redox species in estuarine and coastal waters. Detection limits of 0.18 and 0.20 nmol L-1 were achieved for Fe(II) and Fe(II + III), respectively and a linear dynamic range of 0.5-450 nmol L-1 was obtained for both Fe(II) and Fe(II + III). The sample throughput for the simultaneous measurement of Fe(II) and Fe(II + III) was 12 h-1, and each analysis consumed only 8 mL sample, 520 μL ferrozine solution, and 260 μL ascorbic acid solution. The analyzer was also used to measure nanomolar amounts of soluble reactive phosphorus (SRP) in seawater. The detection limit and the linear dynamic range for the SRP assay were 0.5 nmol L-1 and 1.5-850 nmol L-1. For SRP determination, the sample throughput was 20 h-1, and each analysis required 9 mL of sample, 130 μL of mixed reagent solution and 260 μL of ascorbic acid. The analytical results were reproducible, with a relative standard deviation of 1.4% (2.5 nmol L-1, n = 10), 2.1% (2.5 nmol L-1, n = 10), and 2.1% (10 nmol L-1, n = 11) for Fe(II), Fe(II + III), and SRP, respectively.
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Affiliation(s)
- Luodan Chen
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China; College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Jin Xu
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China; College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Ting Wang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China; College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Yongming Huang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen, China.
| | - Dongxing Yuan
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China; College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Zhenbin Gong
- College of the Environment and Ecology, Xiamen University, Xiamen, China
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17
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Mo A, Wang X, Yuan Y, Liu C, Wang J. Effects of waterborne exposure to environmentally relevant concentrations of selenite on reproductive function of female zebrafish: A life cycle assessment. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 270:116237. [PMID: 33412467 DOI: 10.1016/j.envpol.2020.116237] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 11/12/2020] [Accepted: 12/04/2020] [Indexed: 06/12/2023]
Abstract
Recently, bioaccumulation of dietary organic selenium (Se) in the ovaries and inhibition of reproduction in female aquatic animals have been reported. However, there is limited data on the subtle reproductive impacts of waterborne exposure to inorganic Se in fish. Here, zebrafish embryos (2 h post-fertilization) were exposed to solutions with environmentally relevant levels of Na2SeO3 with concentrations of 0 (control), 7.98 ± 0.31, 25.14 ± 0.15, and 79.60 ± 0.81 μg Se/L for 120 d until they reached sexual maturity. Female zebrafish were selected for reproductive toxicity assessment. In the early embryonic stage, whole-mount in situ hybridization of zebrafish embryos showed that waterborne Na2SeO3 exposure did not affect the observed location of vasa expression in primordial germ cells at 24, 48, and 72 h post-fertilization. Life-cycle exposure to 25.14 ± 0.15 and 79.60 ± 0.81 μg Se/L Na2SeO3 did not change the testosterone and 17β-estradiol contents in female zebrafish at the endpoint of exposure, but significantly reduced the proportion of early vitellogenic oocytes and mature oocytes. Follicle maturity retardation was accompanied by changes in transcriptional levels of the genes related to the hypothalamus-pituitary-gonad-liver (HPGL) axis. Transcriptional levels of cyp19a and lhr in the ovary were down-regulated, while the transcriptional level of fshr in the ovaries was up-regulated. In the 21-day cumulative spawning experiment, Na2SeO3 (25.14 ± 0.15 and 79.60 ± 0.81 μg Se/L) caused fewer eggs to be produced. Additionally, the malformation of zebrafish offspring significantly increased in the group exposed to 79.60 ± 0.81 μg Se/L. In conclusion, for the first time, this study shows that life-cycle exposure to environmentally relevant concentrations of waterborne Na2SeO3 significantly delays ovarian maturation and reduces the fertility of the female zebrafish.
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Affiliation(s)
- Aijie Mo
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Xiaolin Wang
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Yongchao Yuan
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, 430070, China; Shuangshui Shuanglv Institute, Huazhong Agricultural University, Wuhan, 430070, China; National Demonstration Center for Experimental Aquaculture Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Chunsheng Liu
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Jianghua Wang
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
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18
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Arı B, Bakırdere S. A primary reference method for the characterization of Cd, Cr, Cu, Ni, Pb and Zn in a candidate certified reference seawater material: TEA/Mg(OH) 2 assisted ID 3MS by triple quadrupole ICP-MS/MS. Anal Chim Acta 2020; 1140:178-189. [PMID: 33218479 DOI: 10.1016/j.aca.2020.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 09/22/2020] [Accepted: 10/03/2020] [Indexed: 11/30/2022]
Abstract
A certified reference seawater material (CRM), UME CRM 1206 which was sampled from the Marmara Sea (40 31,423 N; 027 11, 333 E) with 27 psu of salinity is about to be released by Inorganic Analysis Laboratory of TÜBİTAK National Metrology Institute (UME). This paper represents the characterization measurements of Cd, Cr, Cu, Ni, Pb and Zn in this CRM. The use of a reference method by a single laboratory is one of the options for the characterization of a candidate CRM according to ISO 17034 [39]. This approach is used throughout this study with an introduction of a primary reference method. For this purpose, combination of triethylamine assisted Mg(OH)2 co-precipitation and triple isotope dilution mass spectrometry (TEA/Mg(OH)2-ID3MS) were developed and validated. This optimized co-precipitation protocol provided the recovery of target analytes within the range of 72%-92% which was the main advantage of TEA/Mg(OH)2 method especially for Cd, Ni, Cu and Zn compared to NH4OH assisted co-precipitation. Analytical performance of TEA/Mg(OH)2-ID3MS were investigated under the optimum conditions. The results for matrix certified reference material were found to be not significantly different from the certified values based on the comparison of the results and certified values within their combined uncertainties. On the other hand, intermediate precision and repeatability of the developed method were found to be in the range of 0.34%-0.90% and 0.09%-0.49%, respectively. This study reports characterization measurements with their expanded uncertainties (k = 2) as 0.4327 ± 0.0071 ng/g for Cd, 2.442 ± 0.033 ng/g for Cr, 1.018 ± 0.012 ng/g for Cu, 4.568 ± 0.037 ng/g for Ni, 1.068 ± 0.016 ng/g for Pb and 8.521 ± 0.075 ng/g for Zn where the intermediate precision was found to be the main contributor to measurement uncertainty budget of TEA/Mg(OH)2-ID3MS method for each analyte.
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Affiliation(s)
- Betül Arı
- TÜBİTAK National Metrology Institute, 41470, Gebze/Kocaeli, Turkey; Yıldız Technical University, Faculty of Art and Science, Chemistry Department, 34210, İstanbul, Turkey.
| | - Sezgin Bakırdere
- Yıldız Technical University, Faculty of Art and Science, Chemistry Department, 34210, İstanbul, Turkey
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19
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Hunnestad AV, Vogel AIM, Armstrong E, Digernes MG, Ardelan MV, Hohmann-Marriott MF. From the Ocean to the Lab-Assessing Iron Limitation in Cyanobacteria: An Interface Paper. Microorganisms 2020; 8:E1889. [PMID: 33260337 PMCID: PMC7760322 DOI: 10.3390/microorganisms8121889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 11/25/2020] [Accepted: 11/26/2020] [Indexed: 12/22/2022] Open
Abstract
Iron is an essential, yet scarce, nutrient in marine environments. Phytoplankton, and especially cyanobacteria, have developed a wide range of mechanisms to acquire iron and maintain their iron-rich photosynthetic machinery. Iron limitation studies often utilize either oceanographic methods to understand large scale processes, or laboratory-based, molecular experiments to identify underlying molecular mechanisms on a cellular level. Here, we aim to highlight the benefits of both approaches to encourage interdisciplinary understanding of the effects of iron limitation on cyanobacteria with a focus on avoiding pitfalls in the initial phases of collaboration. In particular, we discuss the use of trace metal clean methods in combination with sterile techniques, and the challenges faced when a new collaboration is set up to combine interdisciplinary techniques. Methods necessary for producing reliable data, such as High Resolution Inductively Coupled Plasma Mass Spectrometry (HR-ICP-MS), Flow Injection Analysis Chemiluminescence (FIA-CL), and 77K fluorescence emission spectroscopy are discussed and evaluated and a technical manual, including the preparation of the artificial seawater medium Aquil, cleaning procedures, and a sampling scheme for an iron limitation experiment is included. This paper provides a reference point for researchers to implement different techniques into interdisciplinary iron studies that span cyanobacteria physiology, molecular biology, and biogeochemistry.
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Affiliation(s)
- Annie Vera Hunnestad
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway; (A.V.H.); (M.G.D.)
| | - Anne Ilse Maria Vogel
- PhotoSynLab, Department of Biotechnology and Food Science, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway; (A.I.M.V.); (M.F.H.-M.)
| | - Evelyn Armstrong
- NIWA/University of Otago Research Centre for Oceanography, Department of Chemistry, University of Otago, 9054 Dunedin, New Zealand;
| | - Maria Guadalupe Digernes
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway; (A.V.H.); (M.G.D.)
| | - Murat Van Ardelan
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway; (A.V.H.); (M.G.D.)
| | - Martin Frank Hohmann-Marriott
- PhotoSynLab, Department of Biotechnology and Food Science, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway; (A.I.M.V.); (M.F.H.-M.)
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20
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Ma L, Wang WX. Subcellular metal distribution in two deep-sea mollusks: Insight of metal adaptation and detoxification near hydrothermal vents. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115303. [PMID: 32836047 DOI: 10.1016/j.envpol.2020.115303] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/03/2020] [Accepted: 07/25/2020] [Indexed: 06/11/2023]
Abstract
In this study, we determined the concentrations of Cu, Zn, Ni, Cd, Pb and As and their subcellular distributions within the tissues of mussels (Bathymodiolus marisindicus) and snails (Gigantopelta aegis) from two hydrothermal vent regions, i.e., Tiancheng and Longqi, at Southwest Indian Ridge. Mussels collected from the two venting regions showed comparable concentrations for Ni and Pb, but Cu, Zn, Cd and As concentrations were significantly different in mussel gills between the two vent regions. Similar ranges of metal concentrations were found in the snails as those in the mussels, but most of the metals were mainly accumulated in the viscera, except for Ni. Similar subcellular partitioning of Cu, Zn and Cd was documented in different mussel tissues, with cellular debris (50%) being the predominant fraction, followed by equivalent values in other fractions. Lead was distributed in both cellular debris and metal-rich granules (MRG) fraction, whereas Ni was predominantly distributed in MRG (90%). Arsenic was mainly partitioned in cellular debris and metallothionein-like protein. However, deep-sea snails displayed elevated subcellular partitioning of Cu in the organelles (up to 60%) and may be more susceptible to Cu stress than the mussels. Our results demonstrated the metal-specificity of detoxification strategies in these deep-sea hydrothermal vent mollusks, and the mussels may be more adaptable to high metal exposures than the snails at hydrothermal vent.
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Affiliation(s)
- Lan Ma
- School of Energy and Environment, Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), City University of Hong Kong, Kowloon, Hong Kong; Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China
| | - Wen-Xiong Wang
- School of Energy and Environment, Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), City University of Hong Kong, Kowloon, Hong Kong; Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China.
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21
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Griffiths A, Packman H, Leung YL, Coles BJ, Kreissig K, Little SH, van de Flierdt T, Rehkämper M. Evaluation of Optimized Procedures for High-Precision Lead Isotope Analyses of Seawater by Multiple Collector Inductively Coupled Plasma Mass Spectrometry. Anal Chem 2020; 92:11232-11241. [DOI: 10.1021/acs.analchem.0c01780] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alex Griffiths
- Department of Earth Science and Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Hollie Packman
- Department of Earth Science and Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Yee-Lap Leung
- Department of Earth Science and Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Barry J. Coles
- Department of Earth Science and Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Katharina Kreissig
- Department of Earth Science and Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Susan H. Little
- Department of Earth Sciences, University College London, Gower Street, London, WC1E 6BT, United Kingdom
| | - Tina van de Flierdt
- Department of Earth Science and Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Mark Rehkämper
- Department of Earth Science and Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
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22
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Wang H, Chen H, Chernick M, Li D, Ying GG, Yang J, Zheng N, Xie L, Hinton DE, Dong W. Selenomethionine exposure affects chondrogenic differentiation and bone formation in Japanese medaka (Oryzias latipes). JOURNAL OF HAZARDOUS MATERIALS 2020; 387:121720. [PMID: 31812480 DOI: 10.1016/j.jhazmat.2019.121720] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/07/2019] [Accepted: 11/18/2019] [Indexed: 06/10/2023]
Abstract
Excess selenium entering the aquatic environment from anthropogenic activities has been associated with developmental abnormalities in fish including skeletal deformities of the head and spine. However, mechanisms of this developmental toxicity have not been well-characterized. In this study, Japanese medaka (Oryzias latipes) embryos were exposed to seleno-l-methionine (Se-Met) in a range of concentrations. Gene expression was evaluated for sex-determining region Y (SRY)-related box (Sox9a and Sox9b), runt-related transcription factor 2 (Runx2), and melatonin receptor (Mtr). Alterations in the length of Meckel's cartilage, tail curvature, and decreased calcification were observed in skeletal stains at 10- and 22-days post-fertilization (dpf). Embryonic exposure of Osterix-mCherry transgenic medaka resulted in fewer teeth. Sox9a and Sox9b were up-regulated, while Runx2 and Mtr were down-regulated by Se-Met prior to hatch. Whole mount in situ hybridization (WISH) localized gene expression to areas observed to be affected in vivo. In addition, Se-Met exposures of a Mtr morpholino (Mtr-MO) as well as Luzindole exposed embryos developed similar skeletal malformations, supporting involvement of Mtr. These findings demonstrate that Se-Met modulates expression of key genes involved in chondrogenic differentiation and bone formation during development.
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Affiliation(s)
- Huan Wang
- College of Animal Science and Technology, Inner Mongolia University for Nationalities/Inner Mongolia Key Laboratory of Toxicant Monitoring and Toxicology, Tongliao, 028000, China
| | - Hongxing Chen
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China; School of Environment, South China Normal University, University Town, Guangzhou, 510006, China
| | - Melissa Chernick
- Nicholas School of the Environment, Duke University, Durham, NC, 27708, USA
| | - Dan Li
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China; School of Environment, South China Normal University, University Town, Guangzhou, 510006, China
| | - Guang-Guo Ying
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China; School of Environment, South China Normal University, University Town, Guangzhou, 510006, China
| | - Jingfeng Yang
- College of Animal Science and Technology, Inner Mongolia University for Nationalities/Inner Mongolia Key Laboratory of Toxicant Monitoring and Toxicology, Tongliao, 028000, China
| | - Na Zheng
- Nicholas School of the Environment, Duke University, Durham, NC, 27708, USA; Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun, Jilin, 130012, China
| | - Lingtian Xie
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China; School of Environment, South China Normal University, University Town, Guangzhou, 510006, China.
| | - David E Hinton
- Nicholas School of the Environment, Duke University, Durham, NC, 27708, USA.
| | - Wu Dong
- College of Animal Science and Technology, Inner Mongolia University for Nationalities/Inner Mongolia Key Laboratory of Toxicant Monitoring and Toxicology, Tongliao, 028000, China; Nicholas School of the Environment, Duke University, Durham, NC, 27708, USA.
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23
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Dang DH, Wang W, Evans RD. High-resolution mass spectrometry for molybdenum speciation in sulfidic waters. Talanta 2020; 209:120585. [PMID: 31892059 DOI: 10.1016/j.talanta.2019.120585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 11/11/2019] [Accepted: 11/19/2019] [Indexed: 10/25/2022]
Abstract
High resolution electrospray ionization mass spectrometry (ESI-HRMS) was used to study the speciation of molybdenum in interaction with sulfide and chloride. While reactions between molybdate and sulfide lead to creation of four conventional thiomolybdate species (MoO3S2-, MoO2S22-, MoOS32-, MoS42-), chemical formula assignment of recorded mass spectra confirmed the presence of intermediate thiomolybdate compounds (MoO3S22-, MoO2S32-, MoOS42-, MoS52-, MoS62-) and thio-chloro-molybdate compounds (MoO3Cl-, MoO2SCl-, MoOS2Cl-, MoOS3Cl-). Two of the intermediate thiomolybdate compounds were previously suggested theoretically, and this study provides analytical support for the existence of these compounds. Fast ESI-HRMS analysis has allowed us to conduct a highly-resolved short-term kinetic study of these reactions, and we suggest that the reactivity between molybdate and sulfide is more complex than previously thought, particularly during the first 24 h of interaction. Also, the solution composition will impact reaction pathways, and different outcomes found in the literature may arise from choices of ionic strength and pH adjusting agents in previous studies . The occurrence of the thio-chloro-molybdate species detected in this study should be implemented in future Mo speciation models to better assess Mo reactivity in sulfidic waters and reducing environments.
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Affiliation(s)
- Duc Huy Dang
- School of the Environment and Chemistry Department, Trent University, Peterborough, ON, Canada.
| | - Wei Wang
- School of the Environment, Trent University, Peterborough, ON, Canada
| | - R Douglas Evans
- School of the Environment, Trent University, Peterborough, ON, Canada; Water Quality Centre, Trent University, Peterborough, ON, Canada
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24
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González-Álvarez RJ, Bellido-Milla D, Pinto JJ, Moreno C. A handling-free methodology for rapid determination of Cu species in seawater based on direct solid micro-samplers analysis by high-resolution continuum source graphite furnace atomic absorption spectrometry. Talanta 2020; 206:120249. [PMID: 31514883 DOI: 10.1016/j.talanta.2019.120249] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 08/06/2019] [Accepted: 08/09/2019] [Indexed: 10/26/2022]
Abstract
A very simple, sensible and advanced new methodology for the determination of copper species in seawater has been developed. The method consisted of two steps: first a separation/preconcentration of copper species by using liquid phase microextraction-based solvent bars followed by the direct analysis of these solid polymeric micro-samplers in an atomic absorption spectrometer provided with a device for direct analysis. For liquid microextraction, di-2-pyridylketone benzoylhydrazone (dPKBH) dissolved in octan-1-ol was selected as the extracting agent due to its ability to transport inorganic Cu species from seawater samples. The optimum chemical and physical conditions for copper micro-extraction were sample pH 8, a dPKBH concentration of 0.010 mol L-1, a stirring speed of 800 rpm and an extraction time of 10 min. A graphite furnace temperature program was optimised to assure the complete elimination of the solvent bar matrix, and the atomisation step took place at 2200 °C. The method exhibited a limit of detection of 0.026 μg L-1 of copper and a linear range up to 1.50 μg L-1, showing great repeatability and reproducibility (4.07% and 4.43%, respectively). Suitability of the method was confirmed by analysing a certified reference material (CASS-4) under optimum conditions, being the first time ever that a direct solid analysis-based method has been used for the determination of total dissolved copper concentration in seawater. Furthermore, the method was applied to the determination of the operationally defined transportable Cu fraction in seawater samples at natural conditions and the results were compared with theoretical data provided by Visual MINTEQ® 3.1 software. A mathematical model that permits to estimate total dissolved copper concentration was obtained, and the non-transportable copper fraction was calculated by difference.
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Affiliation(s)
- Rafael Jesús González-Álvarez
- Department of Analytical Chemistry, Faculty of Marine and Environmental Sciences, Instituto de Investigación Marina (INMAR). University of Cádiz, 11510, Puerto Real, Spain
| | - Dolores Bellido-Milla
- Department of Analytical Chemistry, Faculty of Sciences, University of Cádiz, 11510, Puerto Real, Spain
| | - Juan José Pinto
- Department of Analytical Chemistry, Faculty of Marine and Environmental Sciences, Instituto de Investigación Marina (INMAR). University of Cádiz, 11510, Puerto Real, Spain.
| | - Carlos Moreno
- Department of Analytical Chemistry, Faculty of Marine and Environmental Sciences, Instituto de Investigación Marina (INMAR). University of Cádiz, 11510, Puerto Real, Spain
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25
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Tanaka Y, Tsujisaka M, Zheng L, Takano S, Sohrin Y. Application of NOBIAS Chelate-PA 1 Resin to the Determination of Zirconium, Niobium, Hafnium, and Tantalum in Seawater. ANAL SCI 2019; 35:1015-1020. [PMID: 31130577 DOI: 10.2116/analsci.19p069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Zirconium, niobium, hafnium, and tantalum are dissolved in seawater as hydroxide complexes at a concentration as low as 0.01 - 370 pmol kg-1 and are expected to be potential tracers for water masses in the ocean. Herein, we report a new analytical method for the multielemental determination of the four elements on the basis of column extraction, using a NOBIAS Chelate-PA 1 resin that contains ethylenediaminetriacetic acid groups. The elements were collected on the resin from seawater that had been added with 3.8 mM HF at pH 6.0, and were eluted with 5 M HF. After the evaporation of 5 M HF, the elements were dissolved in 0.5 M HNO3-6 mM H2SO4-1 mM HF and were determined by a high resolution ICP-MS, using a calibration curve method. We optimized the procedure to achieve quantitative recoveries and low backgrounds for the elements, although the complex formation between the metal ions and NOBIAS Chelate-PA 1 was decelerated by the seawater matrix. The method was tested by investigating the seawater samples of reference material and those collected from the depths at a station in the western North Pacific Ocean.
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Affiliation(s)
| | | | - Linjie Zheng
- Institute for Chemical Research, Kyoto University
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26
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Spectrophotometric flow injection determination of dissolved titanium in seawater exploiting in-line nitrilotriacetic acid resin preconcentration and a long path length liquid waveguide capillary cell. Anal Chim Acta 2019; 1053:54-61. [PMID: 30712569 DOI: 10.1016/j.aca.2018.11.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Revised: 11/14/2018] [Accepted: 11/15/2018] [Indexed: 11/23/2022]
Abstract
A sensitive spectrophotometric method for the determination of dissolved titanium (Ti) in seawater is developed. It involves in-line preconcentration and a long path length liquid waveguide capillary cell (LWCC). Nitrilotriacetic acid (NTA) resin is used to preconcentrate Ti from ∼25 mL seawater sample at pH 1.7, and elution is accomplished with 0.8 mol L-1 hydrochloride acid. The eluted Ti solution is buffered to pH 6.0 with 1.0 mol L-1 ammonium acetate and mixed with 1.5 mmol L-1 Tiron solution. The mixture is then injected into LWCC and measured by spectrophotometry at 420 nm. Before the preconcentration step, the sample is treated with 7 mmol L-1 ascorbic acid to reduce Fe(III) to Fe(II), in order to eliminate the Fe interference. The method is not interfered by Fe(III) and Cu(II) present in seawater samples at concentrations 50-fold higher in relation to Ti, and by Cd(II), Pb(II), Cr(VI), Mn(II), Al(III), Zn(II), and Ni(II) at concentrations 100-fold higher in relation to Ti. It is time efficient (7.5 minutes per sample), sensitive (0.10 nmol L-1 detection limit), precise (1.40% measurement RSD at 1.00 nmol L-1 Ti) and is characterized by a linear range of 0.50-5.00 nmol L-1 Ti. The method was applied to analysis of natural water samples collected from the Jiulongjiang Estuary, Fujian, China.
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27
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Gobi N, Vaseeharan B, Rekha R, Vijayakumar S, Faggio C. Bioaccumulation, cytotoxicity and oxidative stress of the acute exposure selenium in Oreochromis mossambicus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 162:147-159. [PMID: 29990726 DOI: 10.1016/j.ecoenv.2018.06.070] [Citation(s) in RCA: 127] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 06/19/2018] [Accepted: 06/24/2018] [Indexed: 05/12/2023]
Abstract
Selenium (Se) is an essential trace-element that becomes toxic when present at high concentrations for aquatic organisms. The knowledge about the mechanism of Se toxicity in freshwater ecosystem is still poorly studied. Thus the aim of the present study was to assess the impact of environmentally relevant concentrations of Se toxicity: 5, 10, 25, 50 and 100 µg/L or water only (control) for periods of 96 hour (h) to test for Se accumulation (gill, liver and brain), its effects on enzymatic and non-enzymatic antioxidant defenses (gill and liver), oxidative stress effects on lipid, protein (gill and liver), DNA (liver) and inhibition of AchE (brain) activity were measured in Mozambique tilapia, Oreochromis mossambicus. Our result showed that Se accumulation was observed in the gill, liver and brain tissues of fish exposed to different concentrations and accumulation varied upon different tissues. Enzymatic (SOD, CAT, GPx and GST) and non-enzymatic (GSH and MT) antioxidant enzymes such as superoxide dismutase (SOD), glutathione peroxidase (GPx) and glutathione-s-transferase (GST) were significantly increased after 96 h exposure of higher concentrations Se in the gill and liver tissue with the exception of GST activity was significantly inhibited in liver after 96 h exposure of higher concentrations of Se. In contrast, catalase (CAT) activities were inhibited for both tissues of Se exposure at 96 h. Reduced glutathione (GSH) and Metallothionein (MT) levels were increased in the gill and liver tissues after exposure to Se for 96 h. We also observed that Se affected antioxidant defense, increasing oxidative stress indicator of lipid peroxidation (LPO) and protein carbonyl (PCO) in gill and liver tissues of fish exposed to Se for 96 h at the concentration dependent manner. Increased DNA damage scores observed in liver tissue of fish exposed to Se for concentrations dependent manner, indicating potential of Se on fish. We also observed inhibition of acetylcholine esterase (AchE) activity in brain tissue of fish exposed to Se for higher concentrations. The changes in these parameters can be used as suitable biomarkers for monitoring the toxicity of Se in the aquatic environment.
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Affiliation(s)
- Narayanan Gobi
- Biomaterials and Biotechnology in Animal Health Lab, Department of Animal Health and Management, Alagappa University, Science Campus 6(th) Floor, Karaikudi 630004, Tamil Nadu, India
| | - Baskaralingam Vaseeharan
- Biomaterials and Biotechnology in Animal Health Lab, Department of Animal Health and Management, Alagappa University, Science Campus 6(th) Floor, Karaikudi 630004, Tamil Nadu, India.
| | - Ravichandran Rekha
- Biomaterials and Biotechnology in Animal Health Lab, Department of Animal Health and Management, Alagappa University, Science Campus 6(th) Floor, Karaikudi 630004, Tamil Nadu, India
| | - Sekar Vijayakumar
- Biomaterials and Biotechnology in Animal Health Lab, Department of Animal Health and Management, Alagappa University, Science Campus 6(th) Floor, Karaikudi 630004, Tamil Nadu, India
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina-Viale Ferdinando Stagno d'Alcontres, 31 98166 S.Agata-Messina, Italy
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Ma S, Zhou Y, Chen H, Hou L, Zhao J, Cao J, Geng S, Luo Y, Schlenk D, Xie L. Selenium accumulation and the effects on the liver of topmouth gudgeon Pseudorasbora parva exposed to dissolved inorganic selenium. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 160:240-248. [PMID: 29843105 DOI: 10.1016/j.ecoenv.2018.05.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 05/06/2018] [Accepted: 05/20/2018] [Indexed: 06/08/2023]
Abstract
Selenite(IV) and selenate(VI) are the major forms of Se in aquatic ecosystem. In this study, Pseudorasbora parva were exposed to 10, 200 and 1000 μg L-1 selenite and selenate for 28 days. Selenium accumulation, antioxidant enzyme levels, glutathione concentrations, lipid peroxidation and histology were evaluated in livers following exposure. Our results showed that Se(IV) and Se(VI) caused different accumulation patterns in the liver, with a more rapid accumulation of Se with Se(IV) treatment. Both Se species increased hepatic lipid peroxidation after 14 and 28 d (~ 30%). Among the antioxidants examined, the activity of SOD (except day 28) and the cellular levels of GSH were induced by 72-137% at lower concentrations, while the activity of GST was at least 24% lower than that of the control at 200 and 1000 μg L-1 for both Se species at all sampling points. Both forms of Se reduced the hepatosomatic index at 1000 μg L-1 after 28 d. In addition, marked histopathological alterations (10-31%) were observed in the liver of P. parva after exposure to both Se species, with higher frequency in the Se(IV) exposed fish. Liver local necrosis was observed only in the liver of fish exposed to 1000 μg L-1 of Se(IV) (~ 20%). Our results suggest that the ecological impacts of dissolved Se in this freshwater species may also contribute to overall toxicity.
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Affiliation(s)
- Shanshan Ma
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, 110016, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu Zhou
- Guangxi Academy of Fishery Sciences, Nanning, Guangxi 530021, China
| | - Hongxing Chen
- The Environmental Research Institute, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China
| | - Liping Hou
- School of life sciences, Guangzhou University, Guangzhou 510655, China
| | - Jianliang Zhao
- The Environmental Research Institute, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China
| | - Jinling Cao
- State Key Laboratory of Ecological Animal Husbandry and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Shicong Geng
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, 110016, China
| | - Yongju Luo
- Guangxi Academy of Fishery Sciences, Nanning, Guangxi 530021, China.
| | - Daniel Schlenk
- Department of Environmental Sciences, University of California Riverside, Riverside, CA 92521, USA
| | - Lingtian Xie
- The Environmental Research Institute, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China.
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29
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Ma S, Zeng X, Chen H, Geng S, Yan L, Luo Y, Xie L, Zhang Q. The differences in bioaccumulation and effects between Se(IV) and Se(VI) in the topmouth gudgeon Pseudorasbora parva. Sci Rep 2018; 8:13860. [PMID: 30218092 PMCID: PMC6138650 DOI: 10.1038/s41598-018-32270-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 08/02/2018] [Indexed: 11/09/2022] Open
Abstract
Selenium (Se) might be protective against oxidative stress at nutritional levels, but elevated Se concentrations in the diet has been revealed as the main culprit for the extinction of natural fish populations in Se-contaminated lakes. Though Se predominate as waterborne selenite (IV) and selenate (VI) in the water, the differences in bioaccumulation, effects (e.g., oxidative stress, antioxidants etc.) and molecular mechanisms between Se(IV) and Se(VI) have been relatively understudied in wild fish. In this study, the P. parva were exposed to waterborne Se (10, 200 and 1000 μg/L of Se(IV) or Se(VI)) and sampled at 4, 14 and 28 days. Bioaccumulation, tissue distributions of Se and following effects in different tissues were evaluated. The results showed that the levels of Se in the gills and intestine were significantly elevated with a seemingly concentration-dependent pattern in the Se(IV) treatment, with respectively 173.3% and 57.2% increase after 28 days of exposure, relative to that of Se(VI) treatment. Additionally, significant accumulation of Se was also observed in the muscle of Se(IV) treated fish. Se exposure increased the MDA levels in the brain and gills in the Se(IV) treatment, but less apparent in the Se(VI) treatment. Meanwhile, Se exposure lowered (at least 56%) the activity of GST in the gills, but increased the activity of AChE in the muscle (~69%) and brain (~50%) after 28 d. Most importantly, after 28 d of exposure, Se exposure caused significant decrease in GSH levels in the gills (at least 35%) and in all tissues examined at the highest test concentration. In general, the results showed that Se(IV) led to faster accumulation of Se than Se(VI) in P. parva, and the resulted lipid peroxidation was closely related to the levels of antioxidants, especially GSH. Our results suggest that the ecotoxicological effects of waterborne selenite and selenate differ in this freshwater species in the field.
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Affiliation(s)
- Shanshan Ma
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China.,The Key Laboratory of Clean Combustion for Electricity Generation and Heat-Supply Technology, College of Energy and Power, Shenyang Institute of Engineering, Shenyang, 110136, China
| | - Xiangfeng Zeng
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China.,Department of Environmental Science, Zhejiang University, Hangzhou, 310058, China
| | - Hongxing Chen
- The Environmental Research Institute, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| | - Shicong Geng
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Liang Yan
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Yongju Luo
- Guangxi Academy of Fishery Sciences, Nanning, 530021, China
| | - Lingtian Xie
- The Environmental Research Institute, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| | - Qianru Zhang
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China.
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30
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Dang DH, Evans RD. Application of ESI-HRMS for molybdenum speciation in natural waters: An investigation of molybdate-halide reactions. Talanta 2018; 179:221-229. [PMID: 29310226 DOI: 10.1016/j.talanta.2017.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 10/31/2017] [Accepted: 11/01/2017] [Indexed: 11/24/2022]
Abstract
High resolution electrospray ionization mass spectrometry (ESI-HRMS) was used to study the speciation of molybdate in interaction with halides (Cl, F, Br). Desolvation during electrospray ionization induced alteration of aqueous species but method optimization successfully suppressed artefact compounds. At low Mo concentrations, chloro(oxo)molybdate and fluoro(oxo)molybdate species were found and in natural samples, MoO3Cl was detected for the first time, to the best of our knowledge. Apparent equilibrium constants for Cl substitution on molybdate were calculated for a range of pH values from 4.5 to 8.5. A minor alteration in speciation during the gas phase (conversion of doubly charged MoO42- to HMoO4-) did not allow investigation of the molybdate acid-base properties; however this could be determined by speciation modeling. This study provides further evidence that ESI-HRMS is a fast and suitable tool to Deceasedassess the speciation of inorganic compounds such as Mo.
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Affiliation(s)
- Duc Huy Dang
- School of the Environment, Trent University, 1600 West Bank Drive, Peterborough, ON, Canada K9L 0G2.
| | - R Douglas Evans
- School of the Environment, Trent University, 1600 West Bank Drive, Peterborough, ON, Canada K9L 0G2; Water Quality Centre, Trent University, 1600 West Bank Drive, Peterborough, ON, Canada K9L 0G2.
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A catalytic spectrophotometric method for determination of nanomolar manganese in seawater using reverse flow injection analysis and a long path length liquid waveguide capillary cell. Talanta 2018; 178:577-582. [DOI: 10.1016/j.talanta.2017.09.073] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 09/21/2017] [Accepted: 09/26/2017] [Indexed: 12/31/2022]
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32
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Herce-Sesa B, López-López JA, Moreno C. Ionic liquid solvent bar micro-extraction of CdCl n(n-2)- species for ultra-trace Cd determination in seawater. CHEMOSPHERE 2018; 193:306-312. [PMID: 29145092 DOI: 10.1016/j.chemosphere.2017.11.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 10/23/2017] [Accepted: 11/01/2017] [Indexed: 06/07/2023]
Abstract
Water analysis of trace metals has been benefited by recent studies on sample preparation by liquid micro-extraction. However, there are still limitations for its application to seawater, such as the need of additives to preserve the sample or the availability of chemical extractants for the selective extraction from highly saline samples. In this work, a three phase solvent bar micro-extraction (3SBME) system containing the ionic liquid trioctylmethylammonium chloride (Aliquat® 336) has been used for isolation and pre-concentration of Cd from seawater samples, due to its ability for ionic exchange of CdCln(n-2)-. The system was optimized to work at the natural pH of seawater, and conditions for application to real samples were 0.18 M Aliquat® 336 dissolved in kerosene with 0.25 M dodecan-1-ol as organic solution, 1.5 M HNO3 as acceptor solution, 60 min extraction time, and 800 rpm stirring speed in the sample. Loss of organic solution into the sample during extraction was evaluated and revealed its dependence on stirring rate and extraction time. Under optimum conditions samples containing Cd 0.09-0.90 nM were pre-concentrated 65 times. GF-AAS was used for metal quantification with a limit of detection of 0.04 nM. Accuracy was successfully evaluated measuring Cd in a seawater certified reference material BCR-403.
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Affiliation(s)
- Belén Herce-Sesa
- Department of Analytical Chemistry, Faculty of Marine and Environmental Sciences, Instituto Universitario de Investigación Marina (INMAR), International Campus of Global Excellence (Cei·Mar), University of Cádiz, Av. República Saharaui, Puerto Real, 11510 Cádiz, Spain
| | - José A López-López
- Department of Analytical Chemistry, Faculty of Marine and Environmental Sciences, Instituto Universitario de Investigación Marina (INMAR), International Campus of Global Excellence (Cei·Mar), University of Cádiz, Av. República Saharaui, Puerto Real, 11510 Cádiz, Spain.
| | - Carlos Moreno
- Department of Analytical Chemistry, Faculty of Marine and Environmental Sciences, Instituto Universitario de Investigación Marina (INMAR), International Campus of Global Excellence (Cei·Mar), University of Cádiz, Av. República Saharaui, Puerto Real, 11510 Cádiz, Spain
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33
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Fraser M, Fortier M, Foucher D, Roumier PH, Brousseau P, Fournier M, Surette C, Vaillancourt C. Exposure to low environmental concentrations of manganese, lead, and cadmium alters the serotonin system of blue mussels. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2018; 37:192-200. [PMID: 28796292 DOI: 10.1002/etc.3942] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 03/03/2017] [Accepted: 08/08/2017] [Indexed: 06/07/2023]
Abstract
Serotonin plays a crucial role in mussel survival and reproduction. Although the serotonin system can be affected by metals, the effects of environmental concentrations of metals such as manganese (Mn), lead (Pd), and cadmium (Cd) have never been studied in blue mussels. The present study aimed to determine the effects of exposure to Mn, Pb, or Cd on serotonin levels, monoamine oxidase (MAO) activity, and serotonin transporter (SERT) levels in the blue mussel Mytilus edulis. Mussels were exposed in vivo to increasing and environmentally relevant doses of Mn (10-1000 nM; 0.5-50 μg/L), Pb (0.01-10 nM; 0.002-2 μg/L), or Cd (0.01-10 nM; 0.001-1 μg/L) for 28 d. Serotonin levels, MAO activity, and SERT expression were analyzed in the mussel mantle. Expression of SERT protein was significantly decreased, by up to 81%, following Mn, Pb, or Cd exposure. The activity of MAO in females was almost 2-fold higher, versus males, in nonexposed control mussels. In mussels exposed to 0.1 nM of Pb (0.02 μg/L), MAO activity was increased in males and decreased in females. In Cd-exposed mussels, a sex-dependent, inverted nonmonotonic pattern of MAO activity was observed. These results clearly indicate that low environmental concentrations of Mn, Pb, and Cd affect the serotonin system in blue mussels. Environ Toxicol Chem 2018;37:192-200. © 2017 SETAC.
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Affiliation(s)
- Marc Fraser
- INRS-Institut Armand-Frappier, Université du Québec, Laval, Québec, Canada
- Centre de recherche interdisciplinaire sur le bien-être, la santé, la société et l'environnement, Université du Québec à Montréal, Montréal, Québec, Canada
| | - Marlène Fortier
- INRS-Institut Armand-Frappier, Université du Québec, Laval, Québec, Canada
| | - Delphine Foucher
- Département de chimie et de biochimie, Université de Moncton, Moncton, New Brunswick, Canada
| | | | - Pauline Brousseau
- INRS-Institut Armand-Frappier, Université du Québec, Laval, Québec, Canada
| | - Michel Fournier
- INRS-Institut Armand-Frappier, Université du Québec, Laval, Québec, Canada
| | - Céline Surette
- Centre de recherche interdisciplinaire sur le bien-être, la santé, la société et l'environnement, Université du Québec à Montréal, Montréal, Québec, Canada
- Département de chimie et de biochimie, Université de Moncton, Moncton, New Brunswick, Canada
| | - Cathy Vaillancourt
- INRS-Institut Armand-Frappier, Université du Québec, Laval, Québec, Canada
- Centre de recherche interdisciplinaire sur le bien-être, la santé, la société et l'environnement, Université du Québec à Montréal, Montréal, Québec, Canada
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34
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Maksimova VV, Mazukhina SI, Cherepanova TA, Gorbacheva TT. Physical-chemical modeling of elements' behavior in mixing sea and fresh waters of minor rivers in the White Sea catchment area. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2017; 52:890-896. [PMID: 28463586 DOI: 10.1080/10934529.2017.1316169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The physical-chemical stage of marginal filters in minor rivers of the White Sea catchment area by the example of the Umba River, flowing to Kandalaksha Gulf, has been explored. Application of the method of physical-chemical modeling on the basis of field data allowed establishing migration forms of a number of elements in the "river-sea" system and deposition of solid phases when mixing waters. The mixing of river and sea water is accompanied by the sedimentation of predominantly goethite, hydromuscovite, and hydroxylapatite. Sediments in mixing river and sea waters were found to be mainly composed by goethite, hydromuscovite, and hydroxylapatite. The research has added to the knowledge of the role of the abiotic part in the marginal filters of small rivers in the Arctic.
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Affiliation(s)
- Victoria V Maksimova
- a Institute of Industrial Ecology Problems of the North, Kola Science Center , Russian Academy of Sciences , Apatity , Russia
| | - Svetlana I Mazukhina
- a Institute of Industrial Ecology Problems of the North, Kola Science Center , Russian Academy of Sciences , Apatity , Russia
| | - Tatiana A Cherepanova
- a Institute of Industrial Ecology Problems of the North, Kola Science Center , Russian Academy of Sciences , Apatity , Russia
| | - Tamara T Gorbacheva
- a Institute of Industrial Ecology Problems of the North, Kola Science Center , Russian Academy of Sciences , Apatity , Russia
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35
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Salcedo BL, Pomares-Alfonso MS, de la Nuez Pantoja Y, Villanueva Tagle ME. Comparison of three chelating resins for the preconcentration of Cd, Cu and Pb in the analysis of waters by flame atomic absorption spectrometry. Microchem J 2017. [DOI: 10.1016/j.microc.2017.02.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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36
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Feng S, Yuan D, Huang Y, Lin K, Zhou T. In-field determination of trace dissolved manganese in estuarine and coastal waters with automatic on-line preconcentration and flame atomic fluorescence spectrometry. Anal Chim Acta 2017; 963:53-60. [DOI: 10.1016/j.aca.2017.02.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 02/17/2017] [Accepted: 02/21/2017] [Indexed: 10/20/2022]
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37
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Xie L, Wu X, Chen H, Luo Y, Guo Z, Mu J, Blankson ER, Dong W, Klerks PL. The bioaccumulation and effects of selenium in the oligochaete Lumbriculus variegatus via dissolved and dietary exposure routes. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2016; 178:1-7. [PMID: 27450235 DOI: 10.1016/j.aquatox.2016.07.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 07/13/2016] [Accepted: 07/15/2016] [Indexed: 06/06/2023]
Abstract
Aquatic organisms take up selenium from solution and from their diets. Many questions remain regarding the relative importance of selenium accumulation from these sources and resulting effects in benthic invertebrates. The present study addressed the toxicity and accumulation of Se via dissolved and dietary exposures to three different Se species, in the freshwater oligochaete Lumbriculus variegatus. Worms were exposed to 20μg/g dry weight of selenite (Se(IV)), selenate (Se(VI)), or seleno-l-methionine (Se-Met) in their diet (sediment) or to 15μg/L dissolved Se in water-only exposures. While the dissolved and sediment Se levels differed greatly, such levels may co-occur at a Se-contaminated site. Se accumulation, worm population growth, lipid peroxidation (as TBARS), and Na(+)/K(+)-ATPase activity were quantified at the end of the 2-week exposure. The sediment Se-Met exposure caused 100% mortality, while worm densities were reduced by the other exposures except the Se(VI) one. Se bioaccumulation was generally higher for the sediment-Se exposure than the dissolved-Se ones, and was higher for Se(IV) than Se(VI) in the dissolved-Se exposure but not the sediment-Se one. The Se accumulation was highest for Se-Met. The oligochaetes that accumulated Se had higher levels of lipid peroxidation and reduced Na(+)/K(+)-ATPase activity. The present study's findings of differences in Se accumulation and toxicity for the three Se species, with effects generally but not exclusively a function of Se body burdens, underscore the need for research on these issues in invertebrates. Moreover, the results imply that the dietary uptake route is the predominant one for Se accumulation in L. variegatus.
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Affiliation(s)
- Lingtian Xie
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Liaoning 110016, PR China.
| | - Xing Wu
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Liaoning 110016, PR China
| | - Hongxing Chen
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Liaoning 110016, PR China
| | - Yongju Luo
- Guangxi Academy of Fishery Science, Guangxi 530021, PR China.
| | - Zhongbao Guo
- Guangxi Academy of Fishery Science, Guangxi 530021, PR China
| | - Jingli Mu
- Division of Marine Chemistry, National Marine Environmental Monitoring Center, Dalian, Liaoning 116023, PR China
| | - Emmanuel R Blankson
- Department of Biology, University of Louisiana at Lafayette, P. O. Box 43602, Lafayette, LA 70504-3602, USA
| | - Wu Dong
- Inner Mongolia University for the Nationalities, Tongliao 028000, PR China
| | - Paul L Klerks
- Department of Biology, University of Louisiana at Lafayette, P. O. Box 43602, Lafayette, LA 70504-3602, USA
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38
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Horstkotte B, Chocholouš P, Solich P. Large volume preconcentration and determination of nanomolar concentrations of iron in seawater using a renewable cellulose 8-hydroquinoline sorbent microcolumn and universal approach of post-column eluate utilization in a Lab-on-Valve system. Talanta 2016; 150:213-23. [DOI: 10.1016/j.talanta.2015.12.044] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 12/14/2015] [Accepted: 12/16/2015] [Indexed: 11/28/2022]
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39
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Dehouck P, Cordeiro F, Snell J, de la Calle B. State of the art in the determination of trace elements in seawater: a worldwide proficiency test. Anal Bioanal Chem 2016; 408:3223-32. [PMID: 26886745 PMCID: PMC4830889 DOI: 10.1007/s00216-016-9390-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 01/28/2016] [Accepted: 02/02/2016] [Indexed: 12/05/2022]
Abstract
This manuscript presents the results of the International Measurement Evaluation Programme 40 (IMEP-40) study, a proficiency test (PT) which was organised to assess the worldwide performance of laboratories for the determination of trace elements in seawater. This PT supports the implementation of the European Union Water Framework Directive 2000/60/EC, which aims at achieving a long-term high level protection of the aquatic environment, covering lakes, ground water and coastal waters. Forty-six participants reported results. The test item was seawater containing the trace elements As, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Se and Zn. The trace elements in the test item were present in very low concentrations to mimic natural levels. The results of the participants were rated with z and zeta (ζ) scores in accordance with ISO 13528 and ISO 17043. The standard deviation for proficiency assessment, \documentclass[12pt]{minimal}
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\begin{document}$$ \widehat{\upsigma} $$\end{document}σ^, was set at 25 % of the respective assigned values for the 12 measured elements based on previous experience with similar PTs. The low levels of the trace elements combined with the high salt concentration of the seawater made the measurements challenging. Many laboratories were unable to detect or quantify the elements and reported “lower than X” values. The percentage of satisfactory performances (expressed as z scores) ranged from 41 % (Cr, Fe) to 86 % (Mo). The PT study showed that the use of proper standard methods, like ISO 17294-2, and sensitive techniques, like inductively coupled plasma mass spectrometry (ICP-MS), contributed to performing well in this PT round.
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Affiliation(s)
- Pieter Dehouck
- European Commission, Directorate General Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, 2440, Geel, Belgium.
| | - Fernando Cordeiro
- European Commission, Directorate General Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, 2440, Geel, Belgium
| | - James Snell
- European Commission, Directorate General Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, 2440, Geel, Belgium
| | - Beatriz de la Calle
- European Commission, Directorate General Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, 2440, Geel, Belgium
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40
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Schifter I, González-Macías C, Salazar-Coria L, Sánchez-Reyna G, González-Lozano C. Long-term effects of discharges of produced water the marine environment from petroleum-related activities at Sonda de Campeche, Gulf of México. ENVIRONMENTAL MONITORING AND ASSESSMENT 2015; 187:723. [PMID: 26519077 DOI: 10.1007/s10661-015-4944-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 10/21/2015] [Indexed: 06/05/2023]
Abstract
Produced water from offshore oil platforms is a major source of oil and related chemicals into the sea. The large volume and high salinity of produced water could pose severe environmental impacts upon inadequate disposal. This study is based on direct field sampling of effluents released into the ocean in the years 2003 and 2013 at the Sonda de Campeche located in the southern part of the Gulf of Mexico. Metals and hydrocarbons were characterized in water, sediments, and fish tissues at the discharge site and compared with those obtained at two reference sites. Chemicals that exceeded risk-based concentrations in the discharge included the metals As, Pb, Cd, and Cr, and a variety of compounds polycyclic aromatic hydrocarbon (PAHs), including naphthalene, fluorenes, and low molecular weight PAHs. The values of low to high molecular weight polycyclic aromatic hydrocarbon (PAHs), and carbon preference index indicate that hydrocarbons in sediments of the discharge zone are originated from the produced water and combustion sources. Fish tissues at the discharge zone and reference site are contaminated with PAHs, dominated by 2- and 3-rings; 4-ring accounted for less than 1% of total PAHs (TPAHs) in 2003, but increased to 7% in 2013. Results suggest that, from 2003 to 2013, discharges of produced water have had a non-negligible impact on ecosystems at a regional level, so the possibility of subtle, cumulative effects from operational discharges should not be ignored.
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Affiliation(s)
- I Schifter
- Instituto Mexicano del Petróleo, Dirección de Investigación y Posgrado, Eje Central Lázaro Cárdenas No. 152, San Bartolo Atepehuacan, 07730, México, DF, México.
| | - C González-Macías
- Instituto Mexicano del Petróleo, Dirección de Investigación y Posgrado, Eje Central Lázaro Cárdenas No. 152, San Bartolo Atepehuacan, 07730, México, DF, México
| | - L Salazar-Coria
- Instituto Mexicano del Petróleo, Dirección de Investigación y Posgrado, Eje Central Lázaro Cárdenas No. 152, San Bartolo Atepehuacan, 07730, México, DF, México
| | - G Sánchez-Reyna
- Instituto Mexicano del Petróleo, Dirección de Investigación y Posgrado, Eje Central Lázaro Cárdenas No. 152, San Bartolo Atepehuacan, 07730, México, DF, México
| | - C González-Lozano
- Instituto Mexicano del Petróleo, Dirección de Investigación y Posgrado, Eje Central Lázaro Cárdenas No. 152, San Bartolo Atepehuacan, 07730, México, DF, México
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41
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Su CK, Peng PJ, Sun YC. Fully 3D-Printed Preconcentrator for Selective Extraction of Trace Elements in Seawater. Anal Chem 2015; 87:6945-50. [PMID: 26101898 DOI: 10.1021/acs.analchem.5b01599] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this study, we used a stereolithographic 3D printing technique and polyacrylate polymers to manufacture a solid phase extraction preconcentrator for the selective extraction of trace elements and the removal of unwanted salt matrices, enabling accurate and rapid analyses of trace elements in seawater samples when combined with a quadrupole-based inductively coupled plasma mass spectrometer. To maximize the extraction efficiency, we evaluated the effect of filling the extraction channel with ordered cuboids to improve liquid mixing. Upon automation of the system and optimization of the method, the device allowed highly sensitive and interference-free determination of Mn, Ni, Zn, Cu, Cd, and Pb, with detection limits comparable with those of most conventional methods. The system's analytical reliability was further confirmed through analyses of reference materials and spike analyses of real seawater samples. This study suggests that 3D printing can be a powerful tool for building multilayer fluidic manipulation devices, simplifying the construction of complex experimental components, and facilitating the operation of sophisticated analytical procedures for most sample pretreatment applications.
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Affiliation(s)
- Cheng-Kuan Su
- Department of Biomedical Engineering and Environmental Sciences, National Tsing-Hua University, Hsinchu, 30013, Taiwan
| | - Pei-Jin Peng
- Department of Biomedical Engineering and Environmental Sciences, National Tsing-Hua University, Hsinchu, 30013, Taiwan
| | - Yuh-Chang Sun
- Department of Biomedical Engineering and Environmental Sciences, National Tsing-Hua University, Hsinchu, 30013, Taiwan
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42
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Clough R, Sela H, Milne A, Lohan MC, Tokalioglu S, Worsfold PJ. Uncertainty contributions to the measurement of dissolved Co, Fe, Pb and V in seawater using flow injection with solid phase preconcentration and detection by collision/reaction cell—quadrupole ICP–MS. Talanta 2015; 133:162-9. [DOI: 10.1016/j.talanta.2014.08.045] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 08/14/2014] [Accepted: 08/16/2014] [Indexed: 11/27/2022]
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43
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Mackey KRM, Chien CT, Post AF, Saito MA, Paytan A. Rapid and gradual modes of aerosol trace metal dissolution in seawater. Front Microbiol 2015; 5:794. [PMID: 25653645 PMCID: PMC4301189 DOI: 10.3389/fmicb.2014.00794] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 12/23/2014] [Indexed: 11/17/2022] Open
Abstract
Atmospheric deposition is a major source of trace metals in marine surface waters and supplies vital micronutrients to phytoplankton, yet measured aerosol trace metal solubility values are operationally defined, and there are relatively few multi-element studies on aerosol-metal solubility in seawater. Here we measure the solubility of aluminum (Al), cadmium (Cd), cobalt (Co), copper (Cu), iron (Fe), manganese (Mn), nickel (Ni), lead (Pb), and zinc (Zn) from natural aerosol samples in seawater over a 7 days period to (1) evaluate the role of extraction time in trace metal dissolution behavior and (2) explore how the individual dissolution patterns could influence biota. Dissolution behavior occurs over a continuum ranging from rapid dissolution, in which the majority of soluble metal dissolved immediately upon seawater exposure (Cd and Co in our samples), to gradual dissolution, where metals dissolved slowly over time (Zn, Mn, Cu, and Al in our samples). Additionally, dissolution affected by interactions with particles was observed in which a decline in soluble metal concentration over time occurred (Fe and Pb in our samples). Natural variability in aerosol chemistry between samples can cause metals to display different dissolution kinetics in different samples, and this was particularly evident for Ni, for which samples showed a broad range of dissolution rates. The elemental molar ratio of metals in the bulk aerosols was 23,189Fe: 22,651Al: 445Mn: 348Zn: 71Cu: 48Ni: 23Pb: 9Co: 1Cd, whereas the seawater soluble molar ratio after 7 days of leaching was 11Fe: 620Al: 205Mn: 240Zn: 20Cu: 14Ni: 9Pb: 2Co: 1Cd. The different kinetics and ratios of aerosol metal dissolution have implications for phytoplankton nutrition, and highlight the need for unified extraction protocols that simulate aerosol metal dissolution in the surface ocean.
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Affiliation(s)
| | - Chia-Te Chien
- Department of Earth and Planetary Sciences, University of California, Santa CruzSanta Cruz, CA, USA
| | - Anton F. Post
- Graduate School of Oceanography, University of Rhode IslandNarragansett, RI, USA
| | - Mak A. Saito
- Marine Chemistry and Geochemistry, Woods Hole Oceanographic InstitutionWoods Hole, MA, USA
| | - Adina Paytan
- Institute for Marine Science, University of California, Santa CruzSanta Cruz, CA, USA
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44
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López-López JA, Herce-Sesa B, Moreno C. Three-phase solvent bar micro-extraction as an approach to silver ultra-traces speciation in estuarine water samples. Talanta 2015; 132:382-6. [PMID: 25476321 DOI: 10.1016/j.talanta.2014.09.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 09/15/2014] [Accepted: 09/18/2014] [Indexed: 11/27/2022]
Affiliation(s)
- José Antonio López-López
- Department of Analytical Chemistry. Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real, 11510 Cádiz, Spain.
| | - Belén Herce-Sesa
- Department of Analytical Chemistry. Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real, 11510 Cádiz, Spain
| | - Carlos Moreno
- Department of Analytical Chemistry. Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real, 11510 Cádiz, Spain
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45
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Minami T, Konagaya W, Zheng L, Takano S, Sasaki M, Murata R, Nakaguchi Y, Sohrin Y. An off-line automated preconcentration system with ethylenediaminetriacetate chelating resin for the determination of trace metals in seawater by high-resolution inductively coupled plasma mass spectrometry. Anal Chim Acta 2014; 854:183-90. [PMID: 25479883 DOI: 10.1016/j.aca.2014.11.016] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Revised: 11/07/2014] [Accepted: 11/13/2014] [Indexed: 10/24/2022]
Abstract
A novel automated off-line preconcentration system for trace metals (Al, Mn, Fe, Co, Ni, Cu, Zn, Cd, and Pb) in seawater was developed by improving a commercially available solid-phase extraction system SPE-100 (Hiranuma Sangyo). The utilized chelating resin was NOBIAS Chelate-PA1 (Hitachi High-Technologies) with ethylenediaminetriacetic acid and iminodiacetic acid functional groups. Parts of the 8-way valve made of alumina and zirconia in the original SPE-100 system were replaced with parts made of polychlorotrifluoroethylene in order to reduce contamination of trace metals. The eluent pass was altered for the back flush elution of trace metals. We optimized the cleaning procedures for the chelating resin column and flow lines of the preconcentration system, and developed a preconcentration procedure, which required less labor and led to a superior performance compared to manual preconcentration (Sohrin et al.). The nine trace metals were simultaneously and quantitatively preconcentrated from ∼120 g of seawater, eluted with ∼15 g of 1M HNO3, and determined by HR-ICP-MS using the calibration curve method. The single-step preconcentration removed more than 99.998% of Na, K, Mg, Ca, and Sr from seawater. The procedural blanks and detection limits were lower than the lowest concentrations in seawater for Mn, Ni, Cu, and Pb, while they were as low as the lowest concentrations in seawater for Al, Fe, Co, Zn, and Cd. The accuracy and precision of this method were confirmed by the analysis of reference seawater samples (CASS-5, NASS-5, GEOTRACES GS, and GD) and seawater samples for vertical distribution in the western North Pacific Ocean.
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Affiliation(s)
- Tomoharu Minami
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Wataru Konagaya
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Linjie Zheng
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Shotaro Takano
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Masanobu Sasaki
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Rena Murata
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Yuzuru Nakaguchi
- School of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashiosaka 577-8502, Japan
| | - Yoshiki Sohrin
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan.
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46
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Wang BS, Lee CP, Ho TY. Trace metal determination in natural waters by automated solid phase extraction system and ICP-MS: The influence of low level Mg and Ca. Talanta 2014; 128:337-44. [DOI: 10.1016/j.talanta.2014.04.077] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 04/27/2014] [Accepted: 04/28/2014] [Indexed: 10/25/2022]
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47
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Tazoe H, Yamagata T, Obata H, Nagai H. Determination of picomolar beryllium levels in seawater with inductively coupled plasma mass spectrometry following silica-gel preconcentration. Anal Chim Acta 2014; 852:74-81. [PMID: 25441882 DOI: 10.1016/j.aca.2014.09.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 09/05/2014] [Accepted: 09/10/2014] [Indexed: 10/24/2022]
Abstract
A robust and rapid method for the determination of natural levels of beryllium (Be) in seawater was developed to facilitate mapping Be concentrations in the ocean. A solid-phase extraction method using a silica gel column was applied for preconcentration and purification of Be in seawater prior to determination of Be concentrations with inductively coupled plasma mass spectrometry (ICP-MS). Be was quantitatively adsorbed onto silica gel from solutions with pH values ranging from 6.3 to 9, including natural seawater. The chelating agent ethylenediamine tetraacetic acid was used to remove other ions in the seawater matrix (Na, Mg, and Ca) that interfere with the ICP-MS analysis. The reproducibility of the method was 3% based on triplicate analyses of natural seawater samples, and the detection limit was 0.4 pmol kg(-1) for 250 mL of seawater, which is sufficient for the analysis of seawater in the open ocean. The method was then used to determine the vertical profile of Be in the eastern North Pacific Ocean, which was found to be a recycled-type profile in which the Be concentration increased with depth from the surface (7.2 pmol kg(-1) at <200 m) to deep water (29.2 pmol kg(-1) from 3500 m to the bottom).
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Affiliation(s)
- Hirofumi Tazoe
- Department of Radiation Chemistry, Institute of Radiation Emergency Mediation, Hirosaki University, 66-1 Hon-cho, Hirosaki, Aomori 036-8564, Japan; College of Humanities and Sciences, Nihon University, 3-25-40, Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan.
| | - Takeyasu Yamagata
- College of Humanities and Sciences, Nihon University, 3-25-40, Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan
| | - Hajime Obata
- Atmosphere and Ocean Research Institute, The Tokyo University, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8564, Japan
| | - Hisao Nagai
- College of Humanities and Sciences, Nihon University, 3-25-40, Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan
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48
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O'Sullivan JE, Watson RJ, Butler EC. An ICP-MS procedure to determine Cd, Co, Cu, Ni, Pb and Zn in oceanic waters using in-line flow-injection with solid-phase extraction for preconcentration. Talanta 2013; 115:999-1010. [DOI: 10.1016/j.talanta.2013.06.054] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 06/26/2013] [Accepted: 06/27/2013] [Indexed: 10/26/2022]
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49
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Food for Thought: A Critical Overview of Current Practical and Conceptual Challenges in Trace Element Analysis in Natural Waters. WATER 2013. [DOI: 10.3390/w5031152] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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50
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Abstract
Trace metals in seawater are essential to organisms and important as tracers of various processes in the ocean. However, we do not have a good understanding of the global distribution and cycling of trace metals, especially in the Indian Ocean. Here we report the first simultaneous, full-depth, and basin-scale section-distribution of dissolved (D) Al, Mn, Fe, Co, Ni, Cu, Zn, Cd, and Pb in the Indian Ocean. Our data reveal widespread co-limitation for phytoplankton production by DFe and occurrence of redox-related processes. The stoichiometry of the DM/phosphorus ratio agrees within a factor of 5 between deep waters in the Indian and Pacific, whereas it shows variability up to a factor of 300 among water masses within the Indian Ocean. This indicates that a consistent mechanism controls the stoichiometry in the deep waters, which are significantly depleted in Mn, Fe, and Co compared to requirements for phytoplankton.
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