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Patthana P, Zhong HC, Wu Q, Ren TB, Yuan L. Engineering a far-red fluorescent probe for rapid detection of Hg(II) ions in both cells and zebrafish. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 318:124469. [PMID: 38776671 DOI: 10.1016/j.saa.2024.124469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 04/16/2024] [Accepted: 05/13/2024] [Indexed: 05/25/2024]
Abstract
Abnormal accumulation of mercury ions (Hg2+) in organisms can lead to severe central nervous system and other diseases. Therefore, the monitoring and detection of Hg2+ are of great significance for human health and environmental safety. Herein, we designed and synthesized a novel far-red to NIR emission fluorescent probe (Rho-Hg) based on rhodamine derivative as the fluorophore and thiospirolactone as the recognition site for turn-on detecting of Hg2+ in living cells and zebrafish. The probe Rho-Hg displayed superior sensitivity (detection limit = 17.5 nM), rapid response (<1 min), colorimetric change, high selectivity, and moderate pH stability. Leveraging this probe, we realized the real-time monitoring of Hg2+ in real samples, living cells and zebrafish. By fostering zebrafish embryos and larvae in Hg2+-containing nutrient solution, we noticed that Hg2+ was ingested into the zebrafish liver when zebrafish were grown up to 3 days old, and thus we successfully monitored the accumulation and changes of Hg2+ during zebrafish growth and development. Thus, the probe Rho-Hg could be a powerful tool for sensitive and real-time monitoring of Hg2+ in living systems.
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Affiliation(s)
- Patthavongsa Patthana
- State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Hai-Chen Zhong
- State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Qian Wu
- State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Tian-Bing Ren
- State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Lin Yuan
- State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
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Cooke CA, Emmerton CA, Drevnick PE. Legacy coal mining impacts downstream ecosystems for decades in the Canadian Rockies. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 344:123328. [PMID: 38195024 DOI: 10.1016/j.envpol.2024.123328] [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: 09/13/2023] [Revised: 01/02/2024] [Accepted: 01/06/2024] [Indexed: 01/11/2024]
Abstract
Mountaintop removal coal mining leaves a legacy of disturbed landscapes and abandoned infrastructure with clear impacts on water resources; however, the intensity and persistence of this water pollution remains poorly characterized. Here we examined the downstream impacts of over a century of coal mining in the Crowsnest Pass (Alberta, Canada). Water samples were collected downstream of two historical coal mines: Tent Mountain and Grassy Mountain. Tent Mountain hosts a partially reclaimed surface mine that closed in 1983. Selenium concentrations downstream of Tent Mountain reached 185 μg/L in a lake below the mine spoil pile, and up to 23 μg/L in Crowsnest Creek, which drains the lake and the mine property. Further downstream, a well-dated sediment core from Crowsnest Lake records increases in sediment, selenium, lead, carbon, nitrogen, and polycyclic aromatic compounds that closely tracked the history of mining at Tent Mountain. In contrast, episodic discharge of mine water from abandoned underground adits at Grassy Mountain drive periodic (but short-term) increases in iron, various metals, and suspended sediment. These results underscore the lasting downstream impacts of abandoned and even reclaimed coal mines.
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Affiliation(s)
- Colin A Cooke
- Environment and Protected Areas, Government of Alberta, 1-26 Earth Sciences Building, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada; Earth and Atmospheric Sciences, University of Alberta, 1-26 Earth Sciences Building, Edmonton, Alberta, T6G 2E3, Canada.
| | - Craig A Emmerton
- Environment and Protected Areas, Government of Alberta, 1-26 Earth Sciences Building, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada; Biological Sciences, University of Alberta, CW 405 Biological Sciences Building, Edmonton, Alberta, T6G 2E9, Canada
| | - Paul E Drevnick
- Environment and Protected Areas, Government of Alberta, University Research Centre, University of Calgary, Calgary, Alberta, T2L 2K8, Canada; Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada
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Fisher JA, Schneider L, Fostier AH, Guerrero S, Guimarães JRD, Labuschagne C, Leaner JJ, Martin LG, Mason RP, Somerset V, Walters C. A synthesis of mercury research in the Southern Hemisphere, part 2: Anthropogenic perturbations. AMBIO 2023; 52:918-937. [PMID: 36952094 PMCID: PMC10073395 DOI: 10.1007/s13280-023-01840-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 12/11/2022] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Environmental mercury (Hg) contamination is a global concern requiring action at national scales. Scientific understanding and regulatory policies are underpinned by global extrapolation of Northern Hemisphere Hg data, despite historical, political, and socioeconomic differences between the hemispheres that impact Hg sources and sinks. In this paper, we explore the primary anthropogenic perturbations to Hg emission and mobilization processes that differ between hemispheres and synthesize current understanding of the implications for Hg cycling. In the Southern Hemisphere (SH), lower historical production of Hg and other metals implies lower present-day legacy emissions, but the extent of the difference remains uncertain. More use of fire and higher deforestation rates drive re-mobilization of terrestrial Hg, while also removing vegetation that would otherwise provide a sink for atmospheric Hg. Prevalent Hg use in artisanal and small-scale gold mining is a dominant source of Hg inputs to the environment in tropical regions. Meanwhile, coal-fired power stations continue to be a significant Hg emission source and industrial production of non-ferrous metals is a large and growing contributor. Major uncertainties remain, hindering scientific understanding and effective policy formulation, and we argue for an urgent need to prioritize research activities in under-sampled regions of the SH.
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Affiliation(s)
- Jenny A. Fisher
- Centre for Atmospheric Chemistry, School of Earth, Atmospheric and Life Sciences, University of Wollongong, Northfields Avenue, Wollongong, NSW 2522 Australia
| | - Larissa Schneider
- College of Asia and the Pacific, Australian National University, Coombs Bld 9 Fellows Rd, Acton, Canberra, ACT 2601 Australia
| | - Anne-Hélène Fostier
- Instituto de Química/Unicamp, Rua Josué de Castro, s/n – Cidade Universitária, Campinas, SP 13083-970 Brazil
| | - Saul Guerrero
- College of Asia and the Pacific, Australian National University, Coombs Bld 9 Fellows Rd, Acton, Canberra, ACT 2601 Australia
| | - Jean Remy Davée Guimarães
- Lab. de Traçadores, Instituto de Biofísica, Centro de Ciências da Saúde, Bloco G, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, CEP 21941-902 Brazil
| | - Casper Labuschagne
- South African Weather Service c/o CSIR Environmentek, 11 Jan Cilliers Street, Stellenbosch, 7599 South Africa
| | - Joy J. Leaner
- Department of Environmental Affairs and Development Planning, Western Cape Government, Property Building, 1 Dorp Street, Cape Town, 8001 Western Cape South Africa
| | - Lynwill G. Martin
- South African Weather Service c/o CSIR Environmentek, 11 Jan Cilliers Street, Stellenbosch, 7599 South Africa
- Atmospheric Chemistry Research Group, Chemical Resource Beneficiation, North-West University, Potchefstroom, 2520 South Africa
| | - Robert P. Mason
- Department of Marine Sciences, University of Connecticut, 1080 Shennecossett Road, Groton, CT 06340 USA
| | - Vernon Somerset
- Department of Chemistry, CPUT, CPUT Bellville Campus, Bellville, 7535 Western Cape South Africa
| | - Chavon Walters
- Council for Scientific and Industrial Research, 11 Jan Cilliers Street, Stellenbosch, 7599 South Africa
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Yang H, Macario-González L, Cohuo S, Whitmore TJ, Salgado J, Peréz L, Schwalb A, Rose NL, Holmes J, Riedinger-Whitmore MA, Hoelzmann P, O’Dea A. Mercury Pollution History in Tropical and Subtropical American Lakes: Multiple Impacts and the Possible Relationship with Climate Change. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:3680-3690. [PMID: 36802450 PMCID: PMC9996825 DOI: 10.1021/acs.est.2c09870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 06/18/2023]
Abstract
Sediment cores obtained from 11 tropical and subtropical American lakes revealed that local human activities significantly increased mercury (Hg) inputs and pollution levels. Remote lakes also have been contaminated by anthropogenic Hg through atmospheric depositions. Long-term sediment-core profiles revealed an approximately 3-fold increase in Hg fluxes to sediments from c. 1850 to 2000. Generalized additive models indicate that c. 3-fold increases in Hg fluxes also occurred since 2000 in the remote sites, while Hg emissions from anthropogenic sources have remained relatively stable. The tropical and subtropical Americas are vulnerable to extreme weather events. Air temperatures in this region have shown a marked increase since the 1990s, and extreme weather events arising from climate change have increased. When comparing Hg fluxes to recent (1950-2016) climatic changes, results show marked increases in Hg fluxes to sediments during dry periods. The Standardized Precipitation-Evapotranspiration Index (SPEI) time series indicate a tendency toward more extreme drier conditions across the study region since the mid-1990s, suggesting that instabilities in catchment surfaces caused by climate change are responsible for the elevated Hg flux rates. Drier conditions since c. 2000 appear to be promoting Hg fluxes from catchments to lakes, a process that will likely be exacerbated under future climate-change scenarios.
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Affiliation(s)
- Handong Yang
- Environmental
Change Research Centre, University College
London, Gower Street, London WC1E
6BT, U.K.
| | - Laura Macario-González
- Institut
für Geosysteme und Bioindikation, Technische Universität Braunschweig, Langer Kamp 19c, D-38106 Braunschweig, Germany
- Tecnológico
Nacional de México−I. T. de la Zona Maya, Carretera Chetumal-Escárcega
Km 21.5, Ejido Juan Sarabia, 77965 Juan Sarabia, Quintana
Roo, Mexico
| | - Sergio Cohuo
- Institut
für Geosysteme und Bioindikation, Technische Universität Braunschweig, Langer Kamp 19c, D-38106 Braunschweig, Germany
- Tecnológico
Nacional de México−I. T. Chetumal, Av. Insurgentes 330, Chetumal 77013, Quintana Roo, Mexico
| | - Thomas J. Whitmore
- University
of South Florida, 140 7th Avenue South, St. Petersburg, Florida 33701, United States
| | - Jorge Salgado
- Environmental
Change Research Centre, University College
London, Gower Street, London WC1E
6BT, U.K.
- Programa
de Ingeniería Civil, Grupo de Infraestructura y Desarrollo
Sostenible, Universidad Católica
de Colombia, Bogotá 111311, Colombia
- School
of Geography, University of Nottingham, Nottingham NG7 2RD, U.K.
- Smithsonian
Tropical Research Institute, P.O. Box 0843-03092, Balboa 0843-03092, Panama
| | - Liseth Peréz
- Institut
für Geosysteme und Bioindikation, Technische Universität Braunschweig, Langer Kamp 19c, D-38106 Braunschweig, Germany
| | - Antje Schwalb
- Institut
für Geosysteme und Bioindikation, Technische Universität Braunschweig, Langer Kamp 19c, D-38106 Braunschweig, Germany
| | - Neil L. Rose
- Environmental
Change Research Centre, University College
London, Gower Street, London WC1E
6BT, U.K.
| | - Jonathan Holmes
- Environmental
Change Research Centre, University College
London, Gower Street, London WC1E
6BT, U.K.
| | | | - Philipp Hoelzmann
- Institut
für Geographische Wissenschaften, Freie Universität Berlin, Malteser Strasse 74-100, D-12249 Berlin, Germany
| | - Aaron O’Dea
- Smithsonian
Tropical Research Institute, P.O. Box 0843-03092, Balboa 0843-03092, Panama
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