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earth and ocean sciences

Academic staff

Peter Croot, PhD

Established Professor
Earth and Ocean Sciences

Phone: 353 (0)91 492 194
Email: peter.crootnuigalway.ie

Education

BSc (Hons), Chemistry (University of Otago, New Zealand)

PhD, Chemistry (University of Otago, New Zealand)

General Research Interests

Trace Element Speciation, Redox Behaviour, Kinetics & Distribution in Natural Waters:

Iron speciation - Development of analytical methods to determine iron speciation under ambient conditions, this includes flow injection techniques and voltammetric methods. Laboratory measurements of iron speciation and solubility at ambient temperatures and composition. Uptake of iron by phytoplankton, mechanisms and rates.

Al, Mn and Ti – Measurements of Al, Mn and Ti in coastal and open ocean waters as tracers of dust deposition or fluvial input to the surface ocean for use as reference crustal elements to iron for examining iron biogeochemical cycling.

C d/Zn pCO₂ – The biogeochemical cycling of Cd and Zn in surface waters and their relationship to the draw down of CO₂ by phytoplankton.

Halogens – Investigations and development of techniques to examine the speciation of inorganic Iodine and Bromide redox species in natural waters with particular application to oxygen minimum zones and in the Ozonation of seawater for aquaculture.

Photochemistry:

Photoreduction of metal organic complexes – Investigating the effects of sunlight on the generation of reduced metal species from the photoreduction of inorganic and organic complexes.

Cycling of Hydrogen Peroxide and Superoxide in the ocean – Real time measurements of the formation and decay of H₂O₂ and O₂^- in the coastal and open ocean.

Photoreactivity of CDOM – the absorbance and fluorescence properties of CDOM are used to examine interactions with light, metals and photoproduced oxidants such as superoxide.

Regional Oceanography:

West Coast of Ireland and Galway Bay – Trace element biogeochemical cycles along the west coast of Ireland and in Galway Bay.

Oxygen Minimum Zones (OMZs) – Trace element cycling in the surface waters of the OMZs of the Eastern Tropical South Pacific (Peru and Chile) and the Eastern Tropical North Atlantic (Cape Verde and West Africa).

Southern Ocean and Patagonia - The biogeochemical cycling of iron in the Southern Ocean and the effects of iron limitation on the cycling of manganese, cobalt, cadmium and zinc.

Research Projects

In preparation

Project Specific Research Interests & Roles

In preparation

International Activities

International GEOTRACES Standards and intercalibration committee (2007-present). Guest Editor for special issue of Limnology and Oceanography: Methods presenting the results of the recent GEOTRACES intercalibration for Trace Elements and their Isotopes (TEIs) in seawater.

EU COST Workgroup Action 735: Tools for Assessing Global Air–Sea Fluxes of Climate and Air Pollution Relevant Gases (2007-present)

EU COST Workgroup Action 801: The ocean chemistry of bioactive trace elements and paleoclimate proxies (2009-present)

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Earth and Ocean Sciences, School of Natural Sciences
National University of Ireland, Galway, University Road, Galway, Ireland.
Phone: +353 (0)91 492 126, E-mail: Earth and Ocean Sciences
This page was last updated Tuesday, September 18, 2012

		Peter Croot, PhD Established Professor Earth and Ocean Sciences Phone: 353 (0)91 492 194 Email: peter.crootnuigalway.ie

	Education BSc (Hons), Chemistry (University of Otago, New Zealand) PhD, Chemistry (University of Otago, New Zealand)
	General Research Interests Trace Element Speciation, Redox Behaviour, Kinetics & Distribution in Natural Waters: Iron speciation - Development of analytical methods to determine iron speciation under ambient conditions, this includes flow injection techniques and voltammetric methods. Laboratory measurements of iron speciation and solubility at ambient temperatures and composition. Uptake of iron by phytoplankton, mechanisms and rates. Al, Mn and Ti – Measurements of Al, Mn and Ti in coastal and open ocean waters as tracers of dust deposition or fluvial input to the surface ocean for use as reference crustal elements to iron for examining iron biogeochemical cycling. C d/Zn pCO₂ – The biogeochemical cycling of Cd and Zn in surface waters and their relationship to the draw down of CO₂ by phytoplankton. Halogens – Investigations and development of techniques to examine the speciation of inorganic Iodine and Bromide redox species in natural waters with particular application to oxygen minimum zones and in the Ozonation of seawater for aquaculture. Photochemistry: Photoreduction of metal organic complexes – Investigating the effects of sunlight on the generation of reduced metal species from the photoreduction of inorganic and organic complexes. Cycling of Hydrogen Peroxide and Superoxide in the ocean – Real time measurements of the formation and decay of H₂O₂ and O₂^- in the coastal and open ocean. Photoreactivity of CDOM – the absorbance and fluorescence properties of CDOM are used to examine interactions with light, metals and photoproduced oxidants such as superoxide. Regional Oceanography: West Coast of Ireland and Galway Bay – Trace element biogeochemical cycles along the west coast of Ireland and in Galway Bay. Oxygen Minimum Zones (OMZs) – Trace element cycling in the surface waters of the OMZs of the Eastern Tropical South Pacific (Peru and Chile) and the Eastern Tropical North Atlantic (Cape Verde and West Africa). Southern Ocean and Patagonia - The biogeochemical cycling of iron in the Southern Ocean and the effects of iron limitation on the cycling of manganese, cobalt, cadmium and zinc.
	Research Projects In preparation
	Project Specific Research Interests & Roles In preparation
	International Activities International GEOTRACES Standards and intercalibration committee (2007-present). Guest Editor for special issue of Limnology and Oceanography: Methods presenting the results of the recent GEOTRACES intercalibration for Trace Elements and their Isotopes (TEIs) in seawater. EU COST Workgroup Action 735: Tools for Assessing Global Air–Sea Fluxes of Climate and Air Pollution Relevant Gases (2007-present) EU COST Workgroup Action 801: The ocean chemistry of bioactive trace elements and paleoclimate proxies (2009-present)
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