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Juan A. Alfonso

Observed names: J A Alfonso, J. A. Alfonso, J. Alfonso, J.A. Alfonso, Juan A Alfonso, Juan Alfonso
Observed institutions: Universidad de Santiago de Chile, Instituto Venezolano de Investigaciones Científicas, Centro de Química, Universidad Simón Bolívar, Universidad de Sevilla, Universidad Central de Venezuela
ORCID: 0000-0003-3525-0491
Observed ORCID: 0000-0003-3525-0491
OpenAlex ID: A5109851434
Black carbon footprint of human presence in Antarctica
2022 · Raúl R. Cordero, Edgardo Sepúlveda, et al. · Nature Communications · 101
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Distribution and environmental impact of radionuclides in marine sediments along the Venezuelan coast
2014 · Juan A. Alfonso, Karla Pérez, et al. · Journal of Radioanalytical and Nuclear Chemistry · 37
Temporal distribution of heavy metal concentrations in oysters Crassostrea rhizophorae from the central Venezuelan coast
2013 · Juan A. Alfonso, Helga Handt, et al. · Marine Pollution Bulletin · 35
Temporal variation and fluxes of dissolved and particulate organic carbon in the Apure, Caura and Orinoco rivers, Venezuela
2014 · Abrahan Mora, Alain Laraque, et al. · Journal of South American Earth Sciences · 32
Black carbon in the Southern Andean snowpack
2022 · Raúl R Cordero, Edgardo Sepúlveda, et al. · Environmental Research Letters · 28
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Geochemistry of recent lacustrine sediments from Fildes Peninsula, King George Island, maritime Antarctica
2015 · Juan A. Alfonso, Yaneth Vasquez, et al. · Antarctic Science · 28
Assessing Orinoco river sediment discharge trend using MODIS satellite images
2019 · Marjorie Gallay, Jean-Michel Martinez, et al. · Journal of South American Earth Sciences · 27
The Apure River: geochemistry of major and selected trace elements in an Orinoco River tributary coming from the Andes, Venezuela
2010 · Abrahan Mora, Juan Carlos Baquero, et al. · Hydrological Processes · 26
Temporal variability of selected dissolved elements in the lower Orinoco River, Venezuela
2008 · Abrahan Mora, Juan A. Alfonso, et al. · Hydrological Processes · 23
The concentrations of selected trace elements in clams, Trivela mactroidea along the Venezuelan coast in the state of Miranda
2004 · John J. LaBrecque, Zully Benzo, et al. · Marine Pollution Bulletin · 22
Dynamics of dissolved major (Na, K, Ca, Mg, and Si) and trace (Al, Fe, Mn, Zn, Cu, and Cr) elements along the lower Orinoco River
2016 · Abrahan Mora, Jürgen Mahlknecht, et al. · Hydrological Processes · 19
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Temporal and spatial variation of trace metals in clams Tivela mactroidea along the Venezuelan coast
2005 · Juan A. Alfonso, José A. Azócar, et al. · Marine Pollution Bulletin · 19
Distribution of Trace Elements in Offshore Sediments of the Orinoco Delta
2006 · J. A. Alfonso, M. Martínez, et al. · Journal of Coastal Research · 18
Contaminant emissions as indicators of chemical elements in the snow along a latitudinal gradient in southern Andes
2021 · Jaime Pizarro, Pablo M. Vergara, et al. · Scientific Reports · 16
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Impact of the Red Mud Disposal on Several Floodplain Lagoons of the Lower Orinoco River
2015 · Abrahan Mora, Daniel Pisapia, et al. · Water Air & Soil Pollution · 15
Elemental and Mineralogical Composition of the Western Andean Snow (18°S–41°S)
2019 · Juan A. Alfonso, Raul R. Cordero, et al. · Scientific Reports · 13
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Morphodynamic change analysis of bedforms in the Lower Orinoco River, Venezuela
2018 · Santiago Paul Yepez, Alain Laraque, et al. · Proceedings of the International Association of Hydrological Sciences · 13
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Evaluation of MODIS-derived estimates of the albedo over the Atacama Desert using ground-based spectral measurements
2021 · Raúl R. Cordero, Sarah Feron, et al. · Scientific Reports · 12
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Distribution of 137Cs, 40K, 232Th and 238U in coastal marine sediments of Margarita Island, Venezuela
2010 · J. J. LaBrecque, P. R. Cordoves, et al. · Journal of Radioanalytical and Nuclear Chemistry · 12
Caura River basin: Weathering rates, CO2 consumption, and chemistry of major and trace elements in an Orinoco River tributary coming from the Precambrian Guayana Shield, Venezuela
2010 · Abrahan Mora, Juan A. Alfonso, et al. · Geochemistry Geophysics Geosystems · 11
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Trace metals in bivalves and seagrass collected from Venezuelan coastal sites
2007 · J.A. Alfonso, J. Azocar, et al. · Revista de Biología Tropical · 11
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Effect of sputtering pressure on residual stress in Ni films using energy-dispersive x-ray diffraction
2003 · J. A. Alfonso, E. D. Greaves, et al. · Journal of Vacuum Science & Technology A Vacuum Surfaces and Films · 10
A semi-empirical approach to determine gamma activities in environmental cylindrical samples
2007 · Daniel Francisco Palacios, Juan A. Alfonso, et al. · Radiation Measurements · 9
Determination of Selected Trace Elements in Raw Clams and Commercial Clam Meats From the State of Miranda (Venezuela) Employing ICP-OES, GF-AAS, and WD-XRF
2004 · J. J. LaBrecque, Zully Benzo, et al. · Atomic Spectroscopy · 8
Heavy metal imprints in Antarctic snow from research and tourism
2025 · Raúl R. Cordero, Sarah Feron, et al. · Nature Sustainability · 4
Works count: 34
Citation count: 562
H-index: 15
I10-index: 22
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