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Research projects
- Project started in 2012
MiSSE - Mixture Assessment of EDCs
The project is aiming to assess the exposure situation to anthropogenic thyroid hormone disrupting compounds (TDCs) in homes; and accordingly the mixture effects of these compounds. Key emerging TDCs are searched for by applying emission modeling from indoor consumer goods and effect-directed analysis (EDA) to indoor pet cats as a model for the internal exposure to these chemicals and to dust as a route of external exposure. A battery of TDC in vitro screening tests and a in vivo frog model will be applied for detailed studies of individual compounds and realistic mixture signatures. The results are to be translated to improve the understanding of human and child exposures to indoor related chemicals and their thyroidogenic effects in mixtures, which is the central Hub of MiSSE.
- Project started in 2011
Advanced Computer Simulations Methods for Biomolecular Modeling
The general objective of this research project is development of new computer simulation methods and techniques having primary application area in modeling of biologically relevant molecular systems, such as lipid membranes and DNA-nucleosome complexes. The development of molecular modeling methods based on the fundamental physical principles and theories will make simulations capable to not only reproduce available data, but to predict new phenomena, and bring us to better understanding of functioning of biological organisms on the molecular level.
- Project started in 2009
CaSnO-materials for CO-sensing and catalysis
This project has several aims. The primary goal is to advance the synthesis of meta-calcium stannate CaSnO3 and ortho-calcium stannate Ca2SnO4 powders. We want to develop novel synthesis routes involving the use of surfactant templating molecules and rare earth metal doping agents where the sensitivity and activity of the produced materials in sensor and catalytic applications are significantly improved. During the later stage of the project, we also aim to incorporate these materials in a process for catalytic conversion of carbon monoxide.
- Project started in 2009
Hybrids based on nanocellulose and functional nanoparticles
The possibility to control structure and functionality at all length scales has developed tremendously in the last decades, and is rapidly reshaping the materials science and materials chemistry areas. Optimal design of multifunctional materials and coatings requires integration of versatile approaches for synthesis, functionalisation, characterization, and processing of a wide range of species, e.g., molecules and particles, for various applications. Here, processing of materials through assembly has a wide scope and offers new possibilities to design and produce complex materials with great fidelity. The possibility to control and direct the assembly process and produce complex structures over a wide range of length-scales (Å - mm) with a minimum of energy are of course the main features which make these “bottom-up” approaches attractive for applications and offer distinct advantages over other, top-down approaches. From the environmental and sustainable viewpoints, the use of naturally-occurring nanomaterials is highly desirable. In this connection, cellulose nanofibres have received a great deal of interest due to their superior properties compared to regular cellulose fibres. The ability of nanocellulose to form hydrogels and films, together with a large transmittance in the visible region and its inherent large surface area and surface functional groups suggest that it will be possible to form a transparent nanocomposite with a high degree of functionalisation. However, few examples of truly multifunctional materials have been given. The main aim of this project is to combine the expertise at KTH on novel cellulose materials with the expertise at SU on synthesis and assembly of nanocrystals to produce novel multifunctional inorganic cellulose hybrids for optical and magnetic applications. We investigate the use of nanocellulose in various forms: bacterial cellulose (BC), cellulose nanocrystals (CNC) and microfibrillated cellulose (MFC). The different functional inorganic nanoparticles are synthesized both in-situ and using colloidal dispersions. Funding: The Wallenberg Wood Science Center ( http://www.wwsc.se ).
- Project started in 2009
Cat exposure to brominated flame retardants (BFRs) and their phenolic metabolites as related to hyperthyroidism
The objective of the project is to assess polybrominated flame retardants (BFRs) and their metabolites in cats with and without hyperthyroidism
- Project started in 2009
Children from three countries and continents: Environmental contaminant exposure assessment - FOURCEA doctoral project
The project is aimed to: • identify and improve chemical methodology for analysis of organic environmental pollutants, including POPs, and modern persistent technosphere chemicals and byproducts. • assess exposure to these chemicals in cohorts of children and young men and women from three developing countries, i.e. Nicaragua, Guinea Bissau and Bangladesh. A special focus is directed to assessing the exposure of POPs in children working and living at waste disposal sites. • improve the department competence in environmental research in third world countries.
- Project started in 2009
Radiosynthesis and exposure assessment of perfluorinated chemicals (PFCs)
The main part of this project is radioactive synthesis of PFCs. We can detect and see the distribution of a chemical in the body by introducing an unstable (radioactive) isotope into the molecule.
- Project started in 2009
Analysis of polybrominated dibenzo-p-dioxins, hydroxylated polybrominated diphenyl ethers and methoxylated polybrominated diphenyl ethers of natural origin in biota from the Baltic Sea
The objective of this project is to identify and assess polybrominated dibenzo-p-dioxins (PBDDs), hydroxylated and methoxylated polybrominated diphenyl ethers (OH-PBDEs, MeO-PBDEs) and polybrominated phenols (PBPs) in biota from the Baltic Sea.
- Project started in 2009
Organic chemicals emitted from technosphere articles
The aim of this programme is to increase the scientific understanding of the magnitude of the problem regarding emissions from articles.
- Project started in 2009
Surface structure and polutant immobilization
1st, ONDRAF Belgium project, "Fe reducing capacity to Se(VI) in cement contacting groundwater conditions". I am the Project manager, proposed and conducted the work. Xiaodong's postdoc, Dr. Mingren Li helped me on SEM_TEM analysis. Big part of this project is completed and some work left. One paper will be produced on this project in 2009. 2nd, SKB project "Reducing capacities of geological materials", Eva and me proposed together, get approved from SKB, we are working on this project. Eva is the project manager. Another project (3rd) is under negotiation, it is EU-FP7 about Euratom and China cooperation. The project title is “IMMOBILIZATION OF REDOX SENSITIVE RADIONUCLIDES ON FERROUS MATERIALS UNDER REPOSITORY CONDITIONS”. I am proposed by colleagues at ITU-European commission to work as coordinator for EURATOM on this two years project.
