RAMSES · Risk Assessment Methodologies for Surfactants of Environmental Significance
6РП — Действия „Мария Кюри“
- Период
- 2005-11-01 → 2007-10-31
- Финансиране от ЕС
- 158 016 €
- Участници
- 1
- Схема
- SCF
Линиите свързват координатора с партньорите.
Накратко на български
Перфлуорокарбоксилните киселини се анализират, за да се разбере как тези химикали попадат в природата и се разпространяват, например чрез океанските течения до Арктика. Това помага за по-точна оценка на рисковете за здравето и околната среда.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Final Activity Report Summary - RAMSES (Risk assessment methodologies for surfactants of environmental significance)
Chemical risk assessment refers to a methodology under which a pollutant of environmental relevance and concern is thoroughly assessed for its toxic and carcinogenic potential, bioaccumulation, likelihood to undergo atmospheric and aquatic transport and generally possess the capability to impact health and the environment. In the beginning of our funded Marie Curie proposal there were several 'problems' concerning the selected chemicals (Perfluorocarboxylic Acids - PFCAs) and their comprehensive risk assessment: 1. Ambiguity in the scientific literature concerning their physical-chemical properties 2. Unquantified chemical loadings into the environment 3. Lack of mechanistic understanding of transport and distribution 4. Environmental reservoirs and sinks Our research plan (Risk Assessment Methodologies for Surfactants of Environmental Significance - RAMSES) advocated a comprehensive investigation of all previous scientific 'shortenings' and, as seen in the following scientific report, delivered important first answers in several areas. For example, we highlighted the dominance of direct emission sources (i.e. historical manufacture) into the environment, with water being the main sink/reservoir that the chemical will eventually reside. We showed the importance of oceanic transport as responsible for delivering high chemical amounts into the Arctic that were shown to be significantly higher than the respective from atmospheric transport and deposition. Furthermore, emission loadings were assigned to the entire perfluorocarboxylic chain-length for different time periods, geographic locations and environmental media. These chemicals were also found to be able to transport in the atmosphere bound to particles and more research on this is highly recommended.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
The proposed work aims to develop novel analytical and experimental techniques for persistent organic substances that can be included in future risk assessment methodologies. Perfluorinated Carboxylic Acids (PFCAs) are ubiquitous environmental chemicals, chemically and thermally stable, with known or suspected toxic and bioaccumulative properties.Moreover, their discovery in remote/pristine areas with no local sources indicates continental-scale transport. Our research plan proposes the compilation of a global PFCA source and sink inventory in order to account for all possible environmental release pathways and assess the risk they pose to humans and other biotic and abiotic media.The inventory can provide invaluable insights into the magnitude of different manufacturing and release mechanisms as well as determine the relative importance of competing transport routes. The proposal also involves novel experimental work aiming to better understand the long-range transport mechanisms of PFCAs.Thus, two unique experiments are currently planned involving:- Simulation of aerosol formation through bubble bursting in the laboratory and investigation of the mechanism of sorption of PFCAs to aerosols of marine origin. The extent to which the sea surface can supply the atmosphere with organic-rich particles that could partly contribute to the large-scale transport of fluorinated products will be quantified.- Measurements of PFCAs in air masses moving over sites in southern Sweden and Northern Finland. It will be our intention to determine whether they are lost by deposition processes or introduced by aerosol emissions as air masses move from south to north.The results from the second stage will allow us to evaluate if aerosol transport is responsible for the dispersal of PFCAs globally and in particular to Arctic regions. To our knowledge, such an attempt has never previously been undertaken for fluorinated compounds constituting an ambitious research approach.
Оригинален текст от CORDIS (на английски).
Участници
- STOCKHOLMS UNIVERSITET · StockholmКоординаторШвеция
Връзки
Данни: CORDIS, © Европейски съюз