"Aakko-Saksa, Päivi" - Selaus tekijän mukaan TUNICRIS-julkaisut

    • Adaptation of Black Carbon Footprint Concept Would Accelerate Mitigation of Global Warming 

      Timonen, Hilkka; Karjalainen, Panu; Aalto, Pami; Saarikoski, Sanna; Mylläri, Fanni; Karvosenoja, Niko; Jalava, Pasi; Asmi, Eija; Aakko-Saksa, Päivi; Saukkonen, Natalia; Laine, Teemu; Saarnio, Karri; Niemelä, Niko; Enroth, Joonas; Väkevä, Minna; Oyola, Pedro; Pagels, Joakim; Ntzachristos, Leonidas; Cordero, Raul; Kuittinen, Niina; Niemi, Jarkko V.; Rönkkö, Topi (2019)
      article
    • Black carbon instrument responses to laboratory generated particles 

      Salo, Laura; Saarnio, Karri; Saarikoski, Sanna; Teinilä, Kimmo; Barreira, Luis M.F.; Marjanen, Petteri; Martikainen, Sampsa; Keskinen, Helmi; Mustonen, Katja; Lepistö, Teemu; Aakko-Saksa, Päivi; Hakkarainen, Henri; Pfeiffer, Tobias; Jalava, Pasi; Karjalainen, Panu; Keskinen, Jorma; Kuittinen, Niina; Timonen, Hilkka; Rönkkö, Topi (05 / 2024)
      article
      Accurate measurement of black carbon (BC) particles is vital for climate models as well as air quality assessments. While the need for BC particle measurement has been recognized, standardization of instruments and procedures ...
    • Black carbon toxicity dependence on particle coating : Measurements with a novel cell exposure method 

      Hakkarainen, Henri; Salo, Laura; Mikkonen, Santtu; Saarikoski, Sanna; Aurela, Minna; Teinilä, Kimmo; Ihalainen, Mika; Martikainen, Sampsa; Marjanen, Petteri; Lepistö, Teemu; Kuittinen, Niina; Saarnio, Karri; Aakko-Saksa, Päivi; Pfeiffer, Tobias V; Timonen, Hilkka; Rönkkö, Topi; Jalava, Pasi I (10.09.2022)
      article
      Black carbon (BC) is a component of ambient particulate matter which originates from incomplete combustion emissions. BC is regarded as an important short-lived climate forcer, and a significant public health hazard. These ...
    • Effects of fuel composition and vehicle operating temperature on in vitro toxicity of exhaust emissions 

      Hakkarainen, Henri; Järvinen, Anssi; Lepistö, Teemu; Kuittinen, Niina; Markkula, Lassi; Ihantola, Tuukka; Yang, Mo; Martikainen, Maria Viola; Mikkonen, Santtu; Timonen, Hilkka; Aurela, Minna; Barreira, Luis; Ihalainen, Mika; Saarikoski, Sanna; Rönkkö, Topi; Aakko-Saksa, Päivi; Jalava, Pasi (2024)
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      Traffic as an important part of the energy sector significantly contributes to global air pollution. To mitigate the hazardous components of traffic emissions regulations have been implemented resulting in technological ...
    • Electrofuel Concept of Diesel and Oxygenate Fuels Reduces Engine-Out Emissions 

      Aakko-Saksa, Päivi; Järvinen, Anssi; Karppanen, Mikko; Koponen, Päivi; Piimäkorpi, Pekka; Lehtonen, Juha; Harni, Sami; Aurela, Minna; Timonen, Hilkka; Marjanen, Petteri; Markkula, Lassi; Rönkkö, Topi; Hoivala, Jussi
      SAE Technical Papers (SAE International, 28.08.2023)
      conferenceObject
      Electrofuels produced from renewable hydrogen (H2) and captured carbon dioxide (CO2) can be sustainable and carbon-neutral. Paraffinic electrodiesel (e-diesel) can be produced via Fischer-Tropsch synthesis with fuel ...
    • Emissions from modern engines induce distinct effects in human olfactory mucosa cells, depending on fuel and aftertreatment 

      Mussalo, Laura; Avesani, Simone; Shahbaz, Muhammad Ali; Závodná, Táňa; Saveleva, Liudmila; Järvinen, Anssi; Lampinen, Riikka; Belaya, Irina; Krejčík, Zdeněk; Ivanova, Mariia; Hakkarainen, Henri; Kalapudas, Juho; Penttilä, Elina; Löppönen, Heikki; Koivisto, Anne M.; Malm, Tarja; Topinka, Jan; Giugno, Rosalba; Aakko-Saksa, Päivi; Chew, Sweelin; Rönkkö, Topi; Jalava, Pasi; Kanninen, Katja M. (20.12.2023)
      article
      Ultrafine particles (UFP) with a diameter of ≤0.1 μm, are contributors to ambient air pollution and derived mainly from traffic emissions, yet their health effects remain poorly characterized. The olfactory mucosa (OM) is ...
    • Influence of fuel ethanol content on primary emissions and secondary aerosol formation potential for a modern flex-fuel gasoline vehicle 

      Timonen, Hilkka; Karjalainen, Panu; Saukko, Erkka; Saarikoski, Sanna; Aakko-Saksa, Päivi; Simonen, Pauli; Murtonen, Timo; Dal Maso, Miikka; Kuuluvainen, Heino; Bloss, Matthew; Ahlberg, Erik; Svenningsson, Birgitta; Pagels, Joakim; Brune, William H.; Keskinen, Jorma; Worsnop, Douglas R.; Hillamo, Risto; Rönkkö, Topi (24.04.2017)
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      The effect of fuel ethanol content (10, 85 and 100 %) on primary emissions and on subsequent secondary aerosol formation was investigated for a Euro 5 flex-fuel gasoline vehicle. Emissions were characterized during a New ...
    • A new oxidation flow reactor for measuring secondary aerosol formation of rapidly changing emission sources 

      Simonen, Pauli; Saukko, Erkka; Karjalainen, Panu; Timonen, Hilkka; Bloss, Matthew; Aakko-Saksa, Päivi; Rönkkö, Topi; Keskinen, Jorma; Dal Maso, Miikka (21.04.2017)
      article
      Oxidation flow reactors (OFRs) or environmental chambers can be used to estimate secondary aerosol formation potential of different emission sources. Emissions from anthropogenic sources, such as vehicles, often vary on ...
    • Particulate Mass and Nonvolatile Particle Number Emissions from Marine Engines Using Low-Sulfur Fuels, Natural Gas, or Scrubbers 

      Lehtoranta, Kati; Aakko-Saksa, Päivi; Murtonen, Timo; Vesala, Hannu; Ntziachristos, Leonidas; Rönkkö, Topi; Karjalainen, Panu; Kuittinen, Niina; Timonen, Hilkka (19.02.2019)
      article
      In order to meet stringent fuel sulfur limits, ships are increasingly utilizing new fuels or, alternatively, scrubbers to reduce sulfur emissions from the combustion of sulfur-rich heavy fuel oil. The effects of these ...
    • Performance of a Wet Electrostatic Precipitator in Marine Applications 

      Järvinen, Anssi; Lehtoranta, Kati; Aakko-Saksa, Päivi; Karppanen, Mikko; Murtonen, Timo; Martikainen, Jarno; Kuusisto, Jarmo; Nyyssönen, Sami; Koponen, Päivi; Piimäkorpi, Pekka; Friman, Eero; Orasuo, Varpu; Rintanen, Jaakko; Jokiluoma, Juha; Kuittinen, Niina; Rönkkö, Topi (02 / 2023)
      article
      Emissions of marine traffic can be lowered by switching to less polluting fuels or by investing in exhaust aftertreatment. Electrostatic precipitation is a widely used method for particle removal but it is not currently ...
    • Real-world particle emissions and secondary aerosol formation from a diesel oxidation catalyst and scrubber equipped ship operating with two fuels in a SECA area 

      Karjalainen, Panu; Teinilä, Kimmo; Kuittinen, Niina; Aakko-Saksa, Päivi; Bloss, Matthew; Vesala, Hannu; Pettinen, Rasmus; Saarikoski, Sanna; Jalkanen, Jukka Pekka; Timonen, Hilkka (2022)
      article
      SOx Emissions Control Areas (SECAs) have been established to reduce harmful effects of atmospheric sulfur. Typical technological changes for ships to conform with these regulations have included the combustion of low-sulfur ...
    • Review of black carbon emission factors from different anthropogenic sources 

      Rönkkö, Topi; Saarikoski, Sanna; Kuittinen, Niina; Karjalainen, Panu; Keskinen, Helmi; Järvinen, Anssi; Mylläri, Fanni; Aakko-Saksa, Päivi; Timonen, Hilkka (01.03.2023)
      review
      Particulate black carbon (BC) affects global warming by absorbing the solar radiation, by affecting cloud formation, and by decreasing ground albedo when deposited to snow or ice. BC has also a wide variety of adverse ...
    • Shipping Remains a Globally Significant Source of Anthropogenic PN Emissions Even after 2020 Sulfur Regulation 

      Kuittinen, Niina; Jalkanen, Jukka-Pekka; Alanen, Jenni; Ntziachristos, Leonidas; Hannuniemi, Hanna; Johansson, Lasse; Karjalainen, Panu; Saukko, Erkka; Isotalo, Mia; Aakko-Saksa, Päivi; Lehtoranta, Kati; Keskinen, Jorma; Simonen, Pauli; Saarikoski, Sanna; Asmi, Eija; Laurila, Tuomas; Hillamo, Risto; Mylläri, Fanni; Lihavainen, Heikki; Timonen, Hilkka; Rönkkö, Topi (2021)
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      Shipping is the main source of anthropogenic particle emissions in large areas of the globe, influencing climate, air quality, and human health in open seas and coast lines. Here, we determined, by laboratory and on-board ...
    • Suitability of different methods for measuring black carbon emissions from marine engines 

      Aakko-Saksa, Päivi; Kuittinen, Niina; Murtonen, Timo; Koponen, Päivi; Aurela, Minna; Järvinen, Anssi; Teinilä, Kimmo; Saarikoski, Sanna; Barreira, Luis M.F.; Salo, Laura; Karjalainen, Panu; Ortega, Ismael K.; Delhaye, David; Lehtoranta, Kati; Vesala, Hannu; Jalava, Pasi; Rönkkö, Topi; Timonen, Hilkka (2021)
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      Black carbon (BC) emissions intensify global warming and are linked to adverse health effects. The International Maritime Organization (IMO) considers the impact of BC emissions from international shipping. A prerequisite ...
    • Time-resolved characterization of primary particle emissions and secondary particle formation from a modern gasoline passenger car 

      Karjalainen, Panu; Timonen, Hilkka; Saukko, Erkka; Kuuluvainen, Heino; Saarikoski, Sanna; Aakko-Saksa, Päivi; Murtonen, Timo; Bloss, Matthew; Dal Maso, Miikka; Simonen, Pauli; Ahlberg, Erik; Svenningsson, Birgitta; Brune, William Henry; Hillamo, Risto; Keskinen, Jorma; Rönkkö, Topi (14.07.2016)
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      Changes in vehicle emission reduction technologies significantly affect traffic-related emissions in urban areas. In many densely populated areas the amount of traffic is increasing, keeping the emission level high or even ...
    • Towards zero pollution vehicles by advanced fuels and exhaust aftertreatment technologies 

      Saarikoski, Sanna; Järvinen, Anssi; Markkula, Lassi; Aurela, Minna; Kuittinen, Niina; Hoivala, Jussi; Barreira, Luis M.F.; Aakko-Saksa, Päivi; Lepistö, Teemu; Marjanen, Petteri; Timonen, Hilkka; Hakkarainen, Henri; Jalava, Pasi; Rönkkö, Topi (15.04.2024)
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      Vehicular emissions deteriorate air quality in urban areas notably. The aim of this study was to conduct an in-depth characterization of gaseous and particle emissions, and their potential to form secondary aerosol emissions, ...
    • Toxicity of exhaust emissions from high aromatic and non-aromatic diesel fuels using in vitro ALI exposure system 

      Hakkarainen, Henri; Järvinen, Anssi; Lepistö, Teemu; Salo, Laura; Kuittinen, Niina; Laakkonen, Elmeri; Yang, Mo; Martikainen, Maria Viola; Saarikoski, Sanna; Aurela, Minna; Barreira, Luis; Teinilä, Kimmo; Ihalainen, Mika; Aakko-Saksa, Päivi; Timonen, Hilkka; Rönkkö, Topi; Jalava, Pasi (2023)
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      The differences in the traffic fuels have been shown to affect exhaust emissions and their toxicity. Especially, the aromatic content of diesel fuel is an important factor considering the emissions, notably particulate ...
    • Toxicological evaluation of exhaust emissions from light-duty vehicles using different fuel alternatives in sub-freezing conditions 

      Hakkarainen, Henri; Aakko-Saksa, Päivi; Sainio, Maija; Ihantola, Tuukka; Rönkkö, Teemu J.; Koponen, Päivi; Rönkkö, Topi; Jalava, Pasi I. (27.05.2020)
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      Background: Emissions from road traffic are under constant discussion since they pose a major threat to human health despite the increasingly strict emission targets and regulations. Although the new passenger car regulations ...
    • TUBE project : Transport-derived ultrafines and the brain effects 

      Martikainen, Maria Viola; Aakko-Saksa, Päivi; Broek, Lenie van den; Cassee, Flemming R.; Carare, Roxana O.; Chew, Sweelin; Dinnyes, Andras; Giugno, Rosalba; Kanninen, Katja M.; Malm, Tarja; Muala, Ala; Nedergaard, Maiken; Oudin, Anna; Oyola, Pedro; Pfeiffer, Tobias V.; Rönkkö, Topi; Saarikoski, Sanna; Sandström, Thomas; Schins, Roel P.F.; Topinka, Jan; Yang, Mo; Zeng, Xiaowen; Westerink, Remco H.S.; Jalava, Pasi I. (2021)
      article
      The adverse effects of air pollutants on the respiratory and cardiovascular systems are unquestionable. However, in recent years, indications of effects beyond these organ systems have become more evident. Traffic-related ...