Jeffrey Hawkes
Senior Lecturer/Associate Professor at Department of Chemistry for Life Sciences; Analytical Chemistry; Hawkes'Group
- Telephone:
- +46 18 471 36 77
- E-mail:
- jeffrey.hawkes@kemi.uu.se
- Visiting address:
- Husargatan 3 (D5)
752 37 Uppsala - Postal address:
- Box 599
75124 Uppsala
Short presentation
Jeff is a researcher from the UK working on the characterisation of dissolved organic matter in natural systems. His research involves fieldwork, method development and laboratory analysis of samples from diverse systems around the world.
Most of the recent work in the Hawkes group has focused on coupling various types of liquid chromatography to electrospray ionisation mass spectrometry in order to gain understanding about the chemical diversity of natural dissolved organic matter.
Biography
Jeff studied chemistry at the Univerisity of Bristol (UK) before starting a Ph.D. in Ocean & Earth Science at the National Oceanography Centre Southampton (UK). There, he worked on trace metal speciation in hydrothermal plumes. This involved participating in several cruises to oceanic spreading centres to find and sample hydrothermal vent sites with remotely operated submarines.
After finishing his Ph.D. thesis in 2013, he was funded by the Alexander von Humboldt Foundation to work as a postdoctoral researcher at the University of Oldenburg (Germany). There, he worked on the characterisation of dissolved organic matter in hydrothermal systems, using experimental and natural samples. Jeff's current research at Uppsala University involves more characterisation of complex dissolved organic matter, but this time from lakes and forests in Sweden.
The majority of his work now involved method development and designing studies that test the reactivity of natural dissolved organic matter so that better models can be designed that simulate how carbon is processed in the environment.

Publications
Recent publications
Part of Analytical Chemistry, p. 18612-18620, 2025
- DOI for Enhanced Structural Understanding of Dissolved Organic Matter through Comparative LC/MS2 Analysis with Synthetic Carboxylate Rich Alicyclic Molecules
- Download full text (pdf) of Enhanced Structural Understanding of Dissolved Organic Matter through Comparative LC/MS2 Analysis with Synthetic Carboxylate Rich Alicyclic Molecules
Part of Marine Chemistry, 2025
- DOI for Variation in chemical composition of dissolved organic matter during the winter to spring transition in the northern Barents Sea
- Download full text (pdf) of Variation in chemical composition of dissolved organic matter during the winter to spring transition in the northern Barents Sea
Part of Biogeosciences, p. 601-623, 2025
- DOI for Contrasting seasonal patterns in particle aggregation and dissolved organic matter transformation in a sub-Arctic fjord
- Download full text (pdf) of Contrasting seasonal patterns in particle aggregation and dissolved organic matter transformation in a sub-Arctic fjord
Part of Water Research, 2024
- DOI for Water residence time is an important predictor of dissolved organic matter composition and drinking water treatability
- Download full text (pdf) of Water residence time is an important predictor of dissolved organic matter composition and drinking water treatability
Part of Journal of the American Society for Mass Spectrometry, p. 2910-2917, 2024
- DOI for Combined Quantification and Characterization of Dissolved Organic Matter by Liquid Chromatography-Mass Spectrometry Using Charged Aerosol Detection
- Download full text (pdf) of Combined Quantification and Characterization of Dissolved Organic Matter by Liquid Chromatography-Mass Spectrometry Using Charged Aerosol Detection
All publications
Articles in journal
Part of Analytical Chemistry, p. 18612-18620, 2025
- DOI for Enhanced Structural Understanding of Dissolved Organic Matter through Comparative LC/MS2 Analysis with Synthetic Carboxylate Rich Alicyclic Molecules
- Download full text (pdf) of Enhanced Structural Understanding of Dissolved Organic Matter through Comparative LC/MS2 Analysis with Synthetic Carboxylate Rich Alicyclic Molecules
Part of Marine Chemistry, 2025
- DOI for Variation in chemical composition of dissolved organic matter during the winter to spring transition in the northern Barents Sea
- Download full text (pdf) of Variation in chemical composition of dissolved organic matter during the winter to spring transition in the northern Barents Sea
Part of Biogeosciences, p. 601-623, 2025
- DOI for Contrasting seasonal patterns in particle aggregation and dissolved organic matter transformation in a sub-Arctic fjord
- Download full text (pdf) of Contrasting seasonal patterns in particle aggregation and dissolved organic matter transformation in a sub-Arctic fjord
Part of Water Research, 2024
- DOI for Water residence time is an important predictor of dissolved organic matter composition and drinking water treatability
- Download full text (pdf) of Water residence time is an important predictor of dissolved organic matter composition and drinking water treatability
Part of Journal of the American Society for Mass Spectrometry, p. 2910-2917, 2024
- DOI for Combined Quantification and Characterization of Dissolved Organic Matter by Liquid Chromatography-Mass Spectrometry Using Charged Aerosol Detection
- Download full text (pdf) of Combined Quantification and Characterization of Dissolved Organic Matter by Liquid Chromatography-Mass Spectrometry Using Charged Aerosol Detection
Part of Organic Geochemistry, 2024
- DOI for Electrospray ionisation suppression in aquatic dissolved organic matter studies: Investigation via liquid chromatography-mass spectrometry
- Download full text (pdf) of Electrospray ionisation suppression in aquatic dissolved organic matter studies: Investigation via liquid chromatography-mass spectrometry
Part of Environmental Science and Technology, p. 7078-7086, 2024
- DOI for Preparation of Simple Bicyclic Carboxylate-Rich Alicyclic Molecules for the Investigation of Dissolved Organic Matter
- Download full text (pdf) of Preparation of Simple Bicyclic Carboxylate-Rich Alicyclic Molecules for the Investigation of Dissolved Organic Matter
Part of Global Biogeochemical Cycles, 2024
- DOI for Decreasing Photoreactivity and Concurrent Change in Dissolved Organic Matter Composition With Increasing Inland Water Residence Time
- Download full text (pdf) of Decreasing Photoreactivity and Concurrent Change in Dissolved Organic Matter Composition With Increasing Inland Water Residence Time
Antimicrobial Peptides Incorporating Halogenated Marine-Derived Amino Acid Substituents
Part of ACS Medicinal Chemistry Letters, p. 802-809, 2023
Part of RSC Advances, p. 24594-24603, 2023
- DOI for Assessment of sample freezing as a preservation technique for analysing the molecular composition of dissolved organic matter in aquatic systems
- Download full text (pdf) of Assessment of sample freezing as a preservation technique for analysing the molecular composition of dissolved organic matter in aquatic systems
Hydrophilic Species Are the Most Biodegradable Components of Freshwater Dissolved Organic Matter
Part of Environmental Science and Technology, p. 13463-13472, 2023
- DOI for Hydrophilic Species Are the Most Biodegradable Components of Freshwater Dissolved Organic Matter
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Part of Analytical Chemistry, p. 6559-6567, 2023
- DOI for Characterization of a Newly Available Coastal Marine Dissolved Organic Matter Reference Material (TRM-0522)
- Download full text (pdf) of Characterization of a Newly Available Coastal Marine Dissolved Organic Matter Reference Material (TRM-0522)
Selective Exclusion of Aromatic Organic Carbon During Lake Ice Formation
Part of Geophysical Research Letters, 2023
- DOI for Selective Exclusion of Aromatic Organic Carbon During Lake Ice Formation
- Download full text (pdf) of Selective Exclusion of Aromatic Organic Carbon During Lake Ice Formation
Part of Environmental Science, p. 1152-1169, 2022
- DOI for Probing the impact of a phytoplankton bloom on the chemistry of nascent sea spray aerosol using high-resolution mass spectrometry
- Download full text (pdf) of Probing the impact of a phytoplankton bloom on the chemistry of nascent sea spray aerosol using high-resolution mass spectrometry
Part of Ecology, 2022
- DOI for Unified understanding of intrinsic and extrinsic controls of dissolved organic carbon reactivity in aquatic ecosystems
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Part of Environmental Science and Technology, p. 3096-3105, 2022
Part of Environmental Science and Technology, p. 13119-13130, 2022
- DOI for Expression Levels of hgcAB Genes and Mercury Availability Jointly Explain Methylmercury Formation in Stratified Brackish Waters
- Download full text (pdf) of Expression Levels of hgcAB Genes and Mercury Availability Jointly Explain Methylmercury Formation in Stratified Brackish Waters
Part of Journal of Natural Products, p. 215-224, 2022
- DOI for Spatial Distribution and Stability of Cholinesterase Inhibitory Protoberberine Alkaloids from Papaver setiferum
- Download full text (pdf) of Spatial Distribution and Stability of Cholinesterase Inhibitory Protoberberine Alkaloids from Papaver setiferum
Part of Microbial Cell Factories, 2021
- DOI for Production of succinate by engineered strains of Synechocystis PCC 6803 overexpressing phosphoenolpyruvate carboxylase and a glyoxylate shunt
- Download full text (pdf) of Production of succinate by engineered strains of Synechocystis PCC 6803 overexpressing phosphoenolpyruvate carboxylase and a glyoxylate shunt
Unrelated Fungal Rust Candidate Effectors Act on Overlapping Plant Functions
Part of Microorganisms, 2021
- DOI for Unrelated Fungal Rust Candidate Effectors Act on Overlapping Plant Functions
- Download full text (pdf) of Unrelated Fungal Rust Candidate Effectors Act on Overlapping Plant Functions
Community composition of aquatic fungi across the thawing Arctic
Part of Scientific Data, 2021
- DOI for Community composition of aquatic fungi across the thawing Arctic
- Download full text (pdf) of Community composition of aquatic fungi across the thawing Arctic
High Molecular Weight Spectral Interferences in Mass Spectra of Dissolved Organic Matter
Part of Journal of the American Society for Mass Spectrometry, p. 394-397, 2021
- DOI for High Molecular Weight Spectral Interferences in Mass Spectra of Dissolved Organic Matter
- Download full text (pdf) of High Molecular Weight Spectral Interferences in Mass Spectra of Dissolved Organic Matter
Character and environmental lability of cyanobacteria-derived dissolved organic matter
Part of Limnology and Oceanography, p. 496-509, 2021
- DOI for Character and environmental lability of cyanobacteria-derived dissolved organic matter
- Download full text (pdf) of Character and environmental lability of cyanobacteria-derived dissolved organic matter
Declining fungal diversity in Arctic freshwaters along a permafrost thaw gradient
Part of Global Change Biology, p. 5889-5906, 2021
- DOI for Declining fungal diversity in Arctic freshwaters along a permafrost thaw gradient
- Download full text (pdf) of Declining fungal diversity in Arctic freshwaters along a permafrost thaw gradient
Part of Limnology and Oceanography, p. 818-835, 2021
- DOI for Comprehensive analysis of chemical and biological problems associated with browning agents used in aquatic studies
- Download full text (pdf) of Comprehensive analysis of chemical and biological problems associated with browning agents used in aquatic studies
The relevance of environment vs. composition on dissolved organic matter degradation in freshwaters
Part of Limnology and Oceanography, p. 306-320, 2021
- DOI for The relevance of environment vs. composition on dissolved organic matter degradation in freshwaters
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Part of Journal of Geophysical Research - Biogeosciences, 2020
- DOI for Selective Adsorption of Terrestrial Dissolved Organic Matter to Inorganic Surfaces Along a Boreal Inland Water Continuum
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Investigating the Ionization of Dissolved Organic Matter by Electrospray
Part of Analytical Chemistry, p. 14210-14218, 2020
- DOI for Investigating the Ionization of Dissolved Organic Matter by Electrospray
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Part of Limnology and Oceanography, p. 235-258, 2020
- DOI for An international laboratory comparison of dissolved organic matter composition by high resolution mass spectrometry: Are we getting the same answer?
- Download full text (pdf) of An international laboratory comparison of dissolved organic matter composition by high resolution mass spectrometry: Are we getting the same answer?
Part of Journal of Geophysical Research - Biogeosciences, 2020
- DOI for Particles and Aeration at Mire-Stream Interfaces Cause Selective Removal and Modification of Dissolved Organic Matter
- Download full text (pdf) of Particles and Aeration at Mire-Stream Interfaces Cause Selective Removal and Modification of Dissolved Organic Matter
ICBM-OCEAN: Processing Ultrahigh-Resolution Mass Spectrometry Data of Complex Molecular Mixtures
Part of Analytical Chemistry, p. 6832-6838, 2020
Mathematical chromatography deciphers the molecular fingerprints of dissolved organic matter
Part of The Analyst, p. 1789-1800, 2020
- DOI for Mathematical chromatography deciphers the molecular fingerprints of dissolved organic matter
- Download full text (pdf) of Mathematical chromatography deciphers the molecular fingerprints of dissolved organic matter
Part of Faraday discussions, p. 52-71, 2019
- DOI for Complexity of dissolved organic matter in the molecular size dimension: insights from coupled size exclusion chromatography electrospray ionisation mass spectrometry
- Download full text (pdf) of Complexity of dissolved organic matter in the molecular size dimension: insights from coupled size exclusion chromatography electrospray ionisation mass spectrometry
Diffuse Hydrothermal Venting: A Hidden Source of Iron to the Oceans
Part of Frontiers in Marine Science, 2019
- DOI for Diffuse Hydrothermal Venting: A Hidden Source of Iron to the Oceans
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Part of Science of the Total Environment, p. 1019-1027, 2019
Extreme isomeric complexity of dissolved organic matter found across aquatic environments
Part of Limnology and Oceanography Letters, p. 21-30, 2018
- DOI for Extreme isomeric complexity of dissolved organic matter found across aquatic environments
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Regional diversity of complex dissolved organic matter across forested hemiboreal headwater streams
Part of Scientific Reports, 2018
- DOI for Regional diversity of complex dissolved organic matter across forested hemiboreal headwater streams
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Part of Environmental Science and Technology, p. 2091-2099, 2018
Part of Journal of Geophysical Research - Biogeosciences, p. 2412-2428, 2018
- DOI for Organic Carbon Processing During Transport Through Boreal Inland Waters: Particles as Important Sites
- Download full text (pdf) of Organic Carbon Processing During Transport Through Boreal Inland Waters: Particles as Important Sites
Part of Geology, p. 351-354, 2017
- DOI for Isotopic signature of dissolved iron delivered to the Southern Ocean from hydrothermal vents in the East Scotia Sea
- Download full text (pdf) of Isotopic signature of dissolved iron delivered to the Southern Ocean from hydrothermal vents in the East Scotia Sea
Thermally altered marine dissolved organic matter in hydrothermal fluids
Part of Organic Geochemistry, p. 73-86, 2017
Molecular determinants of dissolved organic matter reactivity in lake water
Part of Frontiers in Earth Science, 2017
- DOI for Molecular determinants of dissolved organic matter reactivity in lake water
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Part of Environmental Science and Technology, p. 11571-11579, 2017
- DOI for Emergence of the Reactivity Continuum of Organic Matter from Kinetics of a Multitude of Individual Molecular Constituents
- Download full text (pdf) of Emergence of the Reactivity Continuum of Organic Matter from Kinetics of a Multitude of Individual Molecular Constituents
Molecular alteration of marine dissolved organic matter under experimental hydrothermal conditions
Part of Geochimica et Cosmochimica Acta, p. 68-85, 2016
Part of Analytical Chemistry, p. 7698-7704, 2016
Voltammetric Investigation of Hydrothermal Iron Speciation
Part of Frontiers in Marine Science, 2016
- DOI for Voltammetric Investigation of Hydrothermal Iron Speciation
- Download full text (pdf) of Voltammetric Investigation of Hydrothermal Iron Speciation
Part of Nature Geoscience, p. 856-+, 2015
Articles, review/survey
Part of Biogeosciences, p. 4665-4679, 2024
- DOI for Reviews and syntheses: Opportunities for robust use of peak intensities from high-resolution mass spectrometry in organic matter studies
- Download full text (pdf) of Reviews and syntheses: Opportunities for robust use of peak intensities from high-resolution mass spectrometry in organic matter studies