Environmental and Biogeochemistry
Environmental biogeochemistry concerns the fate of chemical compounds in the environment, as well as chemical processes that govern biogeochemical cycles and chemical speciation of elements and molecules. It also concerns human exposure (indoors as well as outdoors) to chemicals as well as the development of methods and strategies for assessment of this exposure. This field of science is central for a development towards a sustainable society.
Our research ranges from fundamental curiosity-driven projects to applied projects aimed at finding innovative solutions to environmental problems. For example: we study biogeochemical processes on surfaces of different environmental particles at the molecular-level, and work to develop scientifically sound and cost-effective methods for soil remediation. A common approach in many of the research projects is to use of state-of-the-art sampling and analysis techniques, and an integral part of our work is the development of new experimental methods and tools. We also make extensive use of various modeling techniques including chemometrics, chemical fate thermodynamic, and electronic structure calculations. Our research is divided into five sub-disciplines: biogeochemical processes, chemical occupational hygiene, environmental analytical chemistry, environmental fate and modeling, and thermal formation of pollutants.
The research projects cover fate and effect studies of industrial organic chemicals combining experimental and in silico based tools. The overarching objective is to increase understanding of pollutants interactions with critical biological targets significant for adverse outcome pathways including those of the endocrine system but also fate parameters related to abiotic transformation pathways. The research aims to provide insights in critical pollutants of the future and to guide development of more benign chemicals.
The research is focused on studies of chemical and biological processes of metal compounds in ecosystems, biological systems and industrial processes. We develop new powerful analytical techniques and methods for studying chemical speciation and reaction mechanisms and rates. An important area of focus is the study of mercury biogeochemical processes in aquatic and terrestrial ecosystems, as well as in industrial processes.
Mineral surfaces are reactive centers for gases, solutes and water, and play central roles in geochemical, atmospheric, as well as technological processes. Our research activities are focused on inorganic chemical reactions taking place at mineral surfaces. These involve coupled experimental-theoretical efforts aimed at resolving molecular-scale processes.
My research focuses on fate and effects of pharmaceuticals in the environment and includes; developing prioritization and selection methods, development of analytical methods based on liquid chromatography coupled to mass spectrometry, fate and monitoring studies and also effect studies. My work is multi-disciplinary and I have several on-going collaborations with researcher with different backgrounds.
The research focuses on development of advanced tools for environmental analytical chemistry, in particular multi-dimensional chromatography and advanced mass spectrometry. The tools are then used to identify new pollutants and to study their environmental sources, transport, fate and biological effects.
The research is focused on investigating the properties of sheet silicate minerals and their surface chemistry. The goal of our research is to understand and be able to predict structural changes and dynamical processes occurring at the mineral–water interface on the molecular scale, which often requires the use of both theoretical molecular dynamics simulations and different experimental methods.
The research focuses on formation, transformation and degradation of organic pollutants in thermal processes of various kinds, e.g. incineration, pyrolysis and torrefaction of biomass, combustion and co-combustion of waste, and industrial processes. We also study materials and factions that are currently considered as waste but as by thermal treatment results in high-grade materials suitable for use in innovative technical and / or environmental applications such as e.g. water purification adsorbents.
Research in Occupational Chemistry is focused on the development of methods for the assessment of chemical hazards in the workplace. The focus of my research is the development and testing of methods for measuring chemicals in the air and on the skin. The subject groups I worked with were primarily small reactive compounds such as aldehydes, amines, epoxies and isocyanates.
Linder Nording, Malin
The aim of the research is to use metabolomics, with focus on bioactive lipids, to study the impact of nutrition and exposure to air pollution on human health. Analytical protocols are developed for endocannabinoids, prostaglandins and other oxylipins, with important roles as signaling molecules in for instance inflammation. We also study novel treatment strategies, such as new drug candidates for lung disease.
The research focuses on studies concerning formation, occurrence and distribution of organic contaminants in the environment, with a special focus on contaminated sites. Substance classes that are studied are, for example, polycyclic aromatic hydrocarbons (PAH) and their transformation products, and brominated dioxins. Research is also pursued regarding the development of analytical methods for the compounds classes in question.
My research deals mainly with the geochemistry of heavy metals and other inorganic pollutants in contaminated soils and industrial wastes, especially from the mining industry. Focus is put on sorption processes involving mineral surfaces and association with natural organic matter. Materials and geochemical processes capable of removing contaminants from water in soils and surface waters are studied and are described at a molecular scale.
The research within the area of Chemical Occupational Hygiene deals mainly with organic and inorganic analytical chemistry in occupational health with the development of methods for assessment of chemical exposure. Our aim is to develop simple, robust and user-friendly methods to monitor and assess exposure to chemical compounds in work and indoor environments. My focus in this research area is to monitor exposure to medical drugs, airborne and deposited aerosols in work and indoor environments.
The research in is aimed at investigating the solution chemistry of metal complexes with antibacterial and antibiofilm effect. Furthermore, the influence of surface chemistry of the bacterial surface as well as the materials surface on biofilm formation is investigated. This has relevance in many systems for example for infections of medical devices or bacterial biofilm formation in soil.
Phenomena occurring at the surface and solid-solution interface are in focus of several joint research projects. X-Ray photoelectron spectroscopy (XPS), in particular cryogenic XPS, is a main tool to study surface chemical composition and to approach intact environmental and biological interfaces with the aim to understand the electrical double layer formation as a key feature of the interfacial chemistry.
The main objective with my research is to understand coupled chemical processes in aquatic systems. Based upon thermodynamic data models are designed that describe complexation of metal ions in systems with inorganic/organic ligands in multicomponent/multiphase systems. Besides a description of the chemical speciation, conditions for the formation and dissolution of solid phases are presented. Furthermore, the surface properties of these phases with respect to their surface complexation properties are also discussed.
Our research are within the area of environmental analytical chemistry and aim to develop analytical methods and implement studies on distribution of pharmaceuticals to and within the aquatic environments with focus on antiviral drugs and antibiotics and the risk of environmental resistance development in viruses and bacteria.
The research focuses on the development and application of analytical methods/techniques for speciation analysis of inorganic and organometallic compounds.
The analytical techniques used are based on hyphenation of chromatographic separation (HPLC, GC) and spectrometric detection (MS, ICP-MS, AAS) methods. Calibration methodologies based on species specific isotope dilution are employed to follow and correct for the transformation/degradation that can take place during the analysis of organometallic compounds.
The research is focused on the environmental behaviour of legacy and new emerging persistent organic pollutants (POPs). Special interest in studies in soil and water systems and to explore the possibility to connect inherent physicochemical properties to transport, transformation and biological uptake processes. In addition, research on fundamental processes of relevance for development of new environmental technologies for contaminated soil and water. Examples of studied classes of contaminants are; dioxins, pharmaceuticals and biocides.