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Julian Alberto Gallego Urrea

Postdoctoral research fellow

Julian Alberto Gallego Urrea
Postdoctoral research fellow
Inorganic aquatic environmental chemistry
+46 765-506372

Postal Address: Kristineberg 566, 450 34 Fiskebäckskil
Visiting Address: Kristineberg 566 , 450 34 Fiskebäckskil
Duties: Research and teaching

Department of Marine Sciences (More Information)
Box 461
405 30 Göteborg
Visiting Address: Carl Skottsbergs gata 22 B , 413 19 Göteborg

About Julian Alberto Gallego Urrea

Contact details

Department of marine sciences

Telephone: +46 (0)76 55 06 372
E-mail: julian.gallego@marine.gu.se
Address: Kristineberg 566, 451 78 Fiskebäckskil, Sweden





 My main research within marine sciences and the research group on marine environmental nanochemistry is in inorganic environmental aquatic chemistry with emphasis in analytical chemistry, colloidal chemistry and chemical modelling. I am particularly interested in approaches that help connecting aqueous phase environmental chemical modelling with chemical-particle dynamic analysis, with help of novel analytical techniques.

FRAM - centre for future chemical risk assessment and management strategies
In the context of FRAM, I am providing support in the analysis of inorganic components in water and sediments, their speciation, their responses to environmental stressors and their interaction with other contaminants. I collaborate with the field studies planning and analysis providing insight on the possible interactions between different abiotic factors on the fate, transport and bioavailability of inorganic substances, either dissolved or in the particulate form.

MISTRA environmental nanosafety
In Mistra environmental nanosafety program, I collaborate with the detection and fate work packages, using techniques such as scanning electron microscopy, SEM, with energy-dispersive X-ray spectroscopy, EDX, in order to identify elemental composition of inorganic particles.

In Nanofase, our group is developing experimental approaches for the detection of engineered nanoparticles in estuarine and seawater. We are also collaborating in determining transformation rate constants (e.g. heteroaggregation) of nanoparticles relevant for mathematical modelling in a large scale basin modelling.

Earlier research

Chemical speciation
The chemical speciation of trace metals in seawater is influenced by the presence of organic substances. Different types of exudates generated by organisms or derived from decomposition of organic matter, together with the organisms' biological interfaces (membranes) determines the bioavailability of metals to aquatic organisms. Variability in chemical speciation can thus have important ecological consequences.

As part of my postdoc, mesocosm and laboratory experiments were used to generate data on the organic complexation of selected trace metals in seawater, and on the oxidation rate of Fe(II), under changing pH and temperatures. These results were analysed using an in-house chemical speciation model later incorporated in large-scale modelling in the EU project Ocean Certain.

In parallel, the joint university project SHIpH was aimed to evaluate present and potential future acidification of the Baltic Sea as a result of sulphur and nitrogen oxide (SOX and NOX) emissions from commercial shipping under different regulatory regimes. This was assessed with help of a Baltic Sea biogeochemical model (Baltic-probe) in conjunction with other partners in the project.

The focus of my doctoral studies was in the recently developed field of study dealing with environmental risk assessment of manufactured nanoparticles, with emphasis on environmental chemistry and ecotoxicology. My aim in this field was the investigation and analysis of ecotoxicity and behaviour of silver and titanium dioxide nanoparticles in natural aquatic environments. The research also included investigations of the fate and behaviour of manufactured nanomaterials on the environment, and collaborations on the development of analytical tools to analyse such manufactured nanoparticles at ambient ultra-low concentrations in the complex matrices of real aquatic environments.

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Latest publications

Fe(II) stability in coastal seawater during experiments in Patagonia, Svalbard, and Gran Canaria
Mark J. Hopwood, Carolina Santana-González, Julian A. Gallego-Urrea, Nicolas Sanchez, Eric P. Achterberg et al.
Biogeosciences, Journal article 2020
Journal article

Experiment design and bacterial abundance control extracellular H2O2 concentrations during four series of mesocosm experiments
Mark J. Hopwood, Nicolas Sanchez, Despo Polyviou, Øystein Leiknes, Julian A. Gallego-Urrea et al.
Biogeosciences, Journal article 2020
Journal article

Strategies for determining heteroaggregation attachment efficiencies of engineered nanoparticles in aquatic environments
A. Praetorius, E. Badetti, A. Brunelli, A. Clavier, Julian A. Gallego-Urrea et al.
Environmental Science-Nano, Journal article 2020
Journal article

Report on simulation of hetero and homo aggregation processes using computer modelling. H2020 NanoFASE Project Deliverable D8.5. September 2019.
Marianne Seijo, Arnaud Clavier, Fabrice Carnal, Serge Stoll, Antonia Praetorius et al.
Report 2019

Characterizing the behavior, uptake, and toxicity of NM300K silver nanoparticles in Caenorhabditis elegans
Merethe Kleiven, Lisa M. Rossbach, Julian A. Gallego-Urrea, Dag A. Brede, Deborah H. Oughton et al.
Environmental Toxicology and Chemistry, Journal article 2018
Journal article

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Effects of silver nanoparticles to the freshwater snail Physa acuta: The role of test media and snails' life cycle stage
Sandra F. Gonçalves, Maria D. Pavlaki, Rafael Lopes, Julia Hammes, Julian A. Gallego-Urrea et al.
Environmental Toxicology and Chemistry, Journal article 2017
Journal article





Showing 11 - 20 of 30

Page Manager: Annika Wall|Last update: 7/1/2015

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