Research group of Indoor Environment and Occupational Health
Healthy and productive people in healthy indoor and working environment
Research group description
The research of the group of indoor environment and occupational health is focused on exposure assessment, health effects of indoor air impurities, risk assessment, control and mitigation of the exposure at different indoor and occupational environments. Our expertise include e.g., bioaerosols, volatile and semivolatile organic compounds (VOCs and SVOCs), particles, ventilation and cleanliness of HVAC systems, risk assessment of plastic recycling, material and process emissions, irritation testing of chemicals and particles. In addition, we develop methods for indoor air and occupational hygiene measurements.
The bioaerosol laboratory includes basic equipment for collecting and analyzing material, surface and air samples for microbiological analyses as well as special equipment for experimental bioaerosol work. The group has the capability to generate bioaerosols from laboratory media or from contaminated building materials using an FSSST-generator (Fungal Spore Source Strength Tester), which was specifically designed to simulate dry aerosolization of fungal spores. Bacterial aerosols are generated with a Collison nebulizer that better stimulates the droplet aerosolization of bacteria.
The basic research includes the studies on the growth, sporulation and aerosolization of fungi and characterization of fungal fragments. The applied research includes for example, investigation of the behavior of bioaerosols in air samplers and air cleaners and studies on the storage of microbiological samples to be used for various types of assays.
Volatile organic compounds (VOC)
VOCs are collected by Tenax TA/GR tubes and analyzed with a gas chromatograph equipped with a mass selective detector after thermal desorption (TD) as toluene equivalent. The sampling, analysis and concentration of VOCs are determined by ISO 16000-6:2004 standard method.
Formaldehyde and other carbonyls are collected with dinitrophenyl hydratzine (DNPH) samplers, eluted with acetonitrile, and analysed with HPLC.
Our research group has several techniques and instruments to measure particles and fibers and assess the exposure levels at different working and indoor environments.
- Inhalable dust is measured with IOM samplers. The method is based on standards EN 481 ja ISO/CD 7708.
- Mineral and organic fibers can be measured with carbon adhesive discs.
- Several on-line instruments to monitor particle mass and number concentrations and particle number size distribution.
Our laboratory is provided with ventilation measuring techniques to monitor air flow rate, air velocity, pressure drop or pressure differences, indoor air exchange rate as well as air distribution, air tightness of a building, and thermal differences caused by air leakages or poor thermal insulation.
Cleanliness of ventilation systems
- Cleanliness inspections of air-handling systems in buildings
- Dust level and consistency in ventilation ducts
- Cleanliness classification measurements
The Cleanliness Classification of Air-handling Components M1 controls lubricant residues and dust levels of new air-handling components. More information from the Building Information Foundation: https://cer.rts.fi/en/m1-emission-class-for-building-material/
With the irritation testing method we can determine the irritation potency of different chemicals and particles according to standard ASTM E 981-84, that enables the estimation of safe exposure levels at different occupational settings.
Group members - UEF
Pertti Pasanen Research Director , Department of Environmental and Biological Sciences, Research group for Indoo...
Marko Hyttinen University Lecturer , Faculty of Science and Forestry, Department of Environmental and Biological...
Maija Leppänen Postdoctoral Researcher , Department of Environmental and Biological Sciences, Research group for...
Jacob Mensah-Attipoe Department of Environmental and Biological Sciences, Research group for Indoor Environment and Oc...
Joonas Ruokolainen Early Stage Researcher , Department of Environmental and Biological Sciences, Research group for ...
Antti Karjalainen Early Stage Researcher , Department of Environmental and Biological Sciences, Research group for ...
Other group members
Samuel Hartikainen email@example.com
Publications by the research group members
Rakennuksen tiiviyden ja painesuhteiden vaikutus kemiallisten epäpuhtauksien määrään sisäilmassa Rakennuksen tiiviyden ja painesuhteiden vaikutus kemiallisten epäpuhtauksien määrään sisäilmassa. Leppänen, Maija; Pasanen, Pertti; Hyttinen, Marko / Sisäilmastoseminaari 2020. 2020. 2020
Control of Dust Dispersion From an Enclosed Renovation Site Into Adjacent Areas by Using Local Exhaust Ventilation Kokkonen, A; Linnainmaa, M; Säämänen, A; Kanerva, T; Sorvari, J; Kolehmainen, M; Lappalainen, V; Pasanen, P. 2019. Control of Dust Dispersion From an Enclosed Renovation Site Into Adjacent Areas by Using Local Exhaust Ventilation Annals of work exposures and health 63 4: 468-479. 2019
Occupational exposure to gaseous and particulate contaminants originating from additive manufacturing of liquid, powdered and filament plastic materials and related post-processes Väisänen, Antti; Hyttinen, Marko; Ylönen, Sampsa; Alonen, Lauri. 2019. Occupational exposure to gaseous and particulate contaminants originating from additive manufacturing of liquid, powdered and filament plastic materials and related post-processes Journal of occupational and environmental hygiene 16 3: 258-271. 2019
Predicting Indoor Concentrations of Black Carbon in Residential Environments Isiugo, K; Jandarov, R; Cox, J; Chillrud, S; Grinshpun, S; Hyttinen, M; Yermakov, M; Wang, J; Ross, J; Reponen, T. 2019. Predicting Indoor Concentrations of Black Carbon in Residential Environments Atmospheric environment 201: 223-230. 2019
The effect of the shoeless course on particle concentrations and dust composition in schools Leppänen, M; Peräniemi, S; Koponen, H; Sippula, O; Pasanen, P. 2019. The effect of the shoeless course on particle concentrations and dust composition in schools Science of the total environment 2020; 710: 136272. 2019
CFD Modelling of Indoor Contaminants and Their Visualization by Simulated Smoke Videos CFD Modelling of Indoor Contaminants and Their Visualization by Simulated Smoke Videos. Saarinen, Pekka; Rautiainen, Paavo; Ruokolainen, Joonas; Hyttinen, Marko; Hokkanen, Samu; Pasanen, Pertti / Proceedings of Roomvent & Ventilation 2018, 2-5th of June 2018, Espoo, Finland. 2018. 2018
Concentrations and number size distribution of fine and nanoparticles in a traditional Finnish bakery Karjalainen, Antti; Leppänen, Maija; Leskinen, Jani; Torvela, Tiina; Pasanen, Pertti; Tissari, Jarkko; Miettinen, Mirella. 2018. Concentrations and number size distribution of fine and nanoparticles in a traditional Finnish bakery JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE 15 3: 194-203. 2018
Deposition of respiratory virus pathogens on frequently touched surfaces at airports Ikonen, Niina; Savolainen-Kopra, Carita; Enstone, Joanne E; Kulmala, Ilpo; Pasanen, Pertti; Salmela, Anniina; Salo, Satu; Nguyen-Van-Tam, Jonathan S; Ruutu, Petri. 2018. Deposition of respiratory virus pathogens on frequently touched surfaces at airports BMC Infectious Diseases 18 1: 437. 2018
Exposure to volatile organic compounds and inhalable dust during stripping and waxing of floors Exposure to volatile organic compounds and inhalable dust during stripping and waxing of floors. Hyttinen M. Ruokolainen J / The 11th International Occupational Hygiene Association (IOHA) International Scientific Conference. 2018. 2018
Indoor air-related symptoms and volatile organic compounds in materials and air in the hospital environment Rautiainen, Paavo; Hyttinen, Marko; Ruokolainen, Joonas; Saarinen, Pekka; Timonen, Jussi; Pasanen, Pertti. 2018. Indoor air-related symptoms and volatile organic compounds in materials and air in the hospital environment International journal of environmental health research 2019; 29 5: 479-488. 2018