 
            Microplastic research and technology
Leaders
Microplastic research group is focused on the following topics:
- Research and development of technologies feasible for microplastic analysis
- Quantitative and qualitative measurements of microplastics from environmental and food samples
- Development of analytical methods
- Microplastic load to aquatic environments via storm waters
 
- Migration of microplastics ja chemicals from plastic food packages
- Health effects of microplastics, especially for human gut microbiota
- Industrial applications of microplastics research
- Develoment of microplastic remediation methods
We have versatile and high-quality analytical instruments: imaging infrared microscope (Agilent Cary 670/620), Raman microscope (Thermo DXR2xi) and infrared spectrometer (Thermo Nicolet iS50). Moreover, we master methods for light microscopy, electron microscopy (SEM, TEM) and chemical analysis, such as chromatography mass spectrometry.
We have extensive experience on microplastic research and analyses since 2016. Our aims include e.g., to utilize the methods for environmetal and industrial samples, to develop and validate novel analytical methods, as well as to collaborate with various fields of research.
News
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					 COST Action - networking COST Action - networkingCOST Action - networkingArto takes part in the COST Action management committee meeting and working group meetings in Zagreb, Croatia during 25.-26.9.2025
Projects
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                         Circular Economy of water in industrial processes Finished 01.04.2021 - 30.03.2023 Circular Economy of water in industrial processes Finished 01.04.2021 - 30.03.2023
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                         Analysis and removal methods of microplastics for industrial quality control Finished 18.02.2022 - 31.10.2023 Analysis and removal methods of microplastics for industrial quality control Finished 18.02.2022 - 31.10.2023
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                         Direct microplastic exposure via foodstuff and food packaging - plastic leachables and their health effects (diMPex) Finished 01.09.2020 - 31.08.2024 Direct microplastic exposure via foodstuff and food packaging - plastic leachables and their health effects (diMPex) Finished 01.09.2020 - 31.08.2024
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                         Circular Economy Solutions for Microplastics: Indo-Finnish Scientific Collaboration for Innovation Finished 01.01.2022 - 31.12.2024 Circular Economy Solutions for Microplastics: Indo-Finnish Scientific Collaboration for Innovation Finished 01.01.2022 - 31.12.2024
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                         NOMAD: Nano-/Microplastic Mobility and Contaminant Co-Transport in Groundwater – A Multiscale Study with Finnish Perspective 01.09.2024 - 31.08.2028 NOMAD: Nano-/Microplastic Mobility and Contaminant Co-Transport in Groundwater – A Multiscale Study with Finnish Perspective 01.09.2024 - 31.08.2028
Cooperation
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                            Project funding awarded by the Research Council of Finland: - NOMAD – Nano-/Microplastic Mobility and Contaminant Co-Transport in Groundwater – A Multiscale Study with Finnish Perspective (2024-2028), PI Jarkko Akkanen
- diMPex – Direct microplastic exposure via foodstuff and food packaging – plastic leachables and their health effects (2020-2024), PI Arto Koistinen
- MIF – Microplastics in Finnish Waters (2016-2020), PI Arto Koistinen
 Projects funded by Business Finland: Project funding awarded by e.g., Regional Council: 
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                            Doctoral dissertations: - Emilia Uurasjärvi (main subject: Chemistry) 2021: Microplastics – A challenge for environmental analytical chemistry
- Blaz Hrovat (Chemistry) 2024: Industrial Waste Management: Fly ash zeolites and microplastics
- Tuomo Soininen (main subject: Environmental Science) 2025: TBA
 Master’s theses: - Hanna Kolari (environmental science) 2019: Developing a method for analysing microplastics in drinking water produced by communal waterworks
- Niko Kinnunen (environmental science) 2019: Developing a method for analyzing microplastics in packed drink products
- Minna Pääkkönen (environmental science) 2020: Microplastics in the water samples of the Baltic Sea mid-layer
- Patrik Lahtinen (nutrition) 2020: Microplastics in food
- Tuomo Soininen (environmental science) 2021: Microplastic concentrations, size distribution and polymer types in the ice layer of lake Kallavesi
- Shahina Karim (environmental science) 2021: Seasonal variation of microplastic accumulation in lake sediments
- Heidi Mäkelä (environmental science) 2023: Analysis of microplastics from cellulose-rich samples
- Pavel Kipriianov (environmental science) 2023: Methode development for monitoring microplastics in freshwater lake’s water and sediment
- Oki Stranden (environmental science) 2023: The occurrence and identity of microplastics in the water and sediment of Lake Pyhäselkä and River Pielisjoki
- Sanna Mähönen (environmental science) 2023: Effects of nanoplastics on the risk assessment of silver in aquatic organisms
- Matti Leinonen (environmental science) 2023: Performance comparison of two biochar filters in removing microplastics from artificial stormwater – impact of plastic type and size
- Roosa Visuri (environmental science) 2024: The effect of packaging type on the presence of microplastics in mineral waters
- Jonna Helli (environmental science) 2024: Bumblebees in revealing anthropogenic pollution in Finnish cities: microplastic and metals matter
- Mirka Pilli (environmental science) 2024: Microplastic emissions from tyre wear of road vehicles
- Konsta Karvonen (dentistry) 2024: MEASURING MICROPLASTIC PARTICLES IN SALIVA USING IMAGING FTIR MICROSCOPY
- Umme Aiman (environmental science) 2025: TBA
 
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                            Data produced by the research group and set openly accessed: - Original data for article: Microplastics accumulate to thin layers in the stratified Baltic Sea
- Original data for article: Microplastic concentrations, size distribution, and polymer types in the surface waters of a northern European lake
- Data for article: Microplastics in Arctic Waters of the Finnish Sámi Area
- Original data for article: Particle balance and return loops for microplastics in a tertiary-level wastewater treatment plant
- Data for article: Flux rates reflect microplastic sources and their temporal and spatial deposition patterns in aquatic environments
- Data for article: Understanding the path of microplastics in lake from surface water to sediments
 
Keywords
Leaders
Professors
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                              Marjukka KolehmainenProfessorInstitute of Public Health and Clinical Nutrition, School of Medicine, Faculty of Health Sciences
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                              Seppo AuriolaProfessorSchool of Pharmacy, Faculty of Health Sciences
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                              Matthieu RousseyProfessorDepartment of Physics and Mathematics, Faculty of Science, Forestry and Technology
Senior Researchers
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                              Marko LehtonenAssociate ProfessorSchool of Pharmacy, Faculty of Health Sciences
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                              Carlos Gomez GallegoUniversity LecturerInstitute of Public Health and Clinical Nutrition, School of Medicine, Faculty of Health Sciences
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                              Laura TomppoStaff ScientistDepartment of Technical Physics, Faculty of Science, Forestry and Technology
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                              Jarkko AkkanenResearch DirectorDepartment of Environmental and Biological Sciences, Faculty of Science, Forestry and Technology
Post-doctoral Researchers
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                              Kaisa RaninenPostdoctoral ResearcherInstitute of Public Health and Clinical Nutrition, School of Medicine, Faculty of Health Sciences
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                              Tenzin TseringPostdoctoral ResearcherDepartment of Environmental and Biological Sciences, Faculty of Science, Forestry and Technology
Doctoral Researchers
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                              Tuomo SoininenDoctoral ResearcherDepartment of Technical Physics, Faculty of Science, Forestry and Technology
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                        Blaž HrovatPostdoctoral ResearcherDepartment of Physics and Mathematics, Faculty of Science, Forestry and Technology
Supporting Staff
Collaborators
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                              Anna LähdeProfessorDepartment of Environmental and Biological Sciences, Faculty of Science, Forestry and Technology
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                        Jouko VepsäläinenProfessorSchool of Pharmacy, Faculty of Health Sciences
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                              Hanna LehtimäkiProfessorBusiness School, Faculty of Social Sciences and Business Studies
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                              Oksana SkaldinaProject ResearcherDepartment of Environmental and Biological Sciences, Faculty of Science, Forestry and Technology
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                              Hani El-NezamyProfessorInstitute of Public Health and Clinical Nutrition, School of Medicine, Faculty of Health Sciences
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                        Sirpa PeräniemiSenior ResearcherSchool of Pharmacy, Faculty of Health Sciences
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                              Victor Carrasco NavarroProject ResearcherDepartment of Environmental and Biological Sciences, Faculty of Science, Forestry and Technology
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                              Jussi KukkonenProfessorDepartment of Environmental and Biological Sciences, Faculty of Science, Forestry and Technology
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                        Kai-Erik PeiponenProfessor, EmeritusDepartment of Physics and Mathematics, Faculty of Science, Forestry and Technology
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                        Essi JärveläGrant-funded ResearcherSchool of Pharmacy, Faculty of Health Sciences
Publications
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                                                A study protocol for chemical analysis and toxicity testing of virgin and recycled microplastics and associated chemicalsJärvelä, Essi; Peräniemi, Sirpa; Vepsäläinen, Jouko; Hrovat, Blaž; Raninen, Kaisa; Tomppo, Laura; Koistinen, Arto; Rysä, Jaana, 2025, Science of the total environment, 975, 179287. A1 Journal article (refereed), original research
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                                                Aging properties of polymer pellets, release of secondary microplastics and additives in the water environment under laboratory-controlled conditionsBućko, Michał S; Jaworek, Katarzyna; Janoszka, Katarzyna; Kernert, Joanna; Klyta, Justyna; Tsering, Tenzin; Koistinen, Arto; Sobota, Michał; Musioł, Marta, 2025, Journal of hazardous materials, 491, 137882. A1 Journal article (refereed), original research
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                                                Identification of microplastics with cantilever enhanced photoacoustic spectroscopy in infrared regionDas, Sudatta; Fernandes, Rita; Karhu, Juho; Hrovat, Blaz; Koistinen, Arto; Martins, Roberto; Marques, Carlos; Toivonen, Juha; Ikonen, Erkki, 2025, Journal of environmental chemical engineering, 13, 5, 118556. A1 Journal article (refereed), original research
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                                                Analysis of Microplastics in Industrial Processes—Systematic Analysis of Digestion Efficiency of Samples from Forestry, Wastewater Treatment Plants and Biogas IndustriesHrovat, Blaž; Uurasjärvi, Emilia; Koistinen, Arto, 2024, Microplastics, 3, 4, 634-652. A1 Journal article (refereed), original research
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                                                Hyperspectral imaging for identification of irregular-shaped microplastics in waterGebejes, A; Hrovat, B; Semenov, D; Kanyathare, B; Itkonen, T; Keinänen, M; Koistinen, A; Peiponen, K-E; Roussey, M, 2024, Science of the total environment, 944, 173811. A1 Journal article (refereed), original research
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                                                Microplastic accumulation in one-year freshwater ice: A four-year monitoring study reveals winter dynamics of microplasticsSoininen, T; Uurasjärvi, E; Koistinen, A; Saarni, S; Sorvari, J, 2024, Science of the total environment, 957, 177602. A1 Journal article (refereed), original research
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                                                Microplastics in Arctic waters of the Finnish Sámi areaSoininen, Tuomo; Uurasjärvi, Emilia; Hämäläinen, Lauri; Huusari, Noora; Feodoroff, Juha; Moshnikoff, Jouko; Niiranen, Eetu; Feodoroff, Pauliina; Mustonen, Tero; Koistinen, Arto, 2024, Science of the total environment, 940, 173666. A1 Journal article (refereed), original research
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                                                Preparation of synthetic micro- and nano plastics for method validation studiesHrovat, Blaž; Uurasjärvi, Emilia; Viitala, Mirka; del Pino, Ana Franco; Mänttäri, Mika; Papamatthaiakis, Nikolaos; Haapala, Antti; Peiponen, Kai; Roussey, Matthieu; Koistinen, Arto, 2024, Science of the total environment, 925, 171821. A1 Journal article (refereed), original research
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                                                What to monitor? Microplastics in a freshwater lake – From seasonal surface water to bottom sedimentsBarone, Marta; Dimante-Deimantovica, Inta; Busmane, Sintija; Koistinen, Arto; Poikane, Rita; Saarni, Saija; Stivrins, Normunds; Tylmann, Wojciech; Uurasjärvi, Emilia; Viksna, Arturs, 2024, Environmental advances, 17, 100577. A1 Journal article (refereed), original research
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                                                Detection and identification of microplastics directly in water by hyperspectral imagingGebejes, Ana; Kaynathare, Boniphace; Hrovat, Blaž; Semenov, Dmitri; Itkonen, Tommi; Keinänen, Markku; Koistinen, Arto; Peiponen, Kai-Erik; Roussey, Matthieu, 2023, 09002. A4 Conference proceedings
