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Determination of po...
Determination of polyoxymethylene (POM) - water partition coefficients for oxy-PAHs and PAHs
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- Josefsson, Sarah (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment
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Arp, Hans Peter H. (författare)
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- Berggren Kleja, Dan (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för mark och miljö,Department of Soil and Environment,Swedish Geotechnical Institute (SGI)
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Enell, Anja (författare)
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- Lundstedt, Staffan (författare)
- Umeå universitet,Kemiska institutionen
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(creator_code:org_t)
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- Elsevier BV, 2015
- 2015
- Engelska.
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Ingår i: Chemosphere. - : Elsevier BV. - 0045-6535 .- 1879-1298. ; 119, s. 1268-1274
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://res.slu.se/i...
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Abstract
Ämnesord
Stäng
- Oxygenated polycyclic aromatic hydrocarbons (oxy-PAHs) are a class of ubiquitously occurring pollutants of which little is known. They can be co-emitted with PAHs or formed from PAHs in the environment. The environmental fate and risk of oxy-PAHs are difficult to assess due to a lack of methods to quantify their pore water concentrations. One sampler that can be used to determine freely dissolved concentrations of organic contaminants is polyoxymethylene (POM). In this study, POM - water partition coefficients (K-POM) were determined for 11 oxy-PAHs. K-POM values of 8 PAHs with similar hydrophobicities as the oxy-PAHs were determined for comparison. Results showed that log K-POM values ranged from 2.64 to 4.82 for the PAHs (2-4 rings), similar to previously determined values. LogK(pom) values for investigated oxy-PAHs ranged from 0.96 to 5.36. The addition of carbonylic oxygen on a parent PAH generally lowered K-POM by 0.5 to 1.0 log units, which is attributable to the presence of carbonylic oxygens increasing water solubility. The K-POM values presented here will facilitate simultaneous assessments of freely dissolved water concentrations of oxy-PAHs and PAHs in environmental media.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Nyckelord
- Oxy-PAHs
- PAHs
- Pore water concentrations
- Passive samplers
- Polyoxymethylene
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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