Analysis and toxicity of 59 PAH in petrogenic and pyrogenic environmental samples including dibenzopyrenes, 7H-benzo[c]fluorene, 5-methylchrysene and 1-methylpyrene
| Autor: | Sigrid Richter-Brockmann, Christine Achten |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Environmental Engineering
Future studies Health Toxicology and Mutagenesis Benzo(c)phenanthrene 010501 environmental sciences Fluorene 01 natural sciences chemistry.chemical_compound 1-methylpyrene Environmental Chemistry Polycyclic Aromatic Hydrocarbons 0105 earth and related environmental sciences Chemistry 010401 analytical chemistry Public Health Environmental and Occupational Health General Medicine General Chemistry Benzo(c)fluorene Pollution 5-Methylchrysene Dibenzopyrenes 0104 chemical sciences Environmental chemistry Toxicity Environmental Pollutants Environmental Monitoring |
| Zdroj: | Chemosphere. 200 |
| ISSN: | 1879-1298 |
| Popis: | In this study 59 PAH were analyzed in samples of petrogenic and pyrogenic sources as well as mixed environmental matrices. Among the analytes, PAH of molecular weights from 128 Da to 302 Da in alkylated and in native form were included. Results show that non-EPA PAH make up 69.3–95.1% of the overall toxic equivalents (TEQ) as based on the toxic equivalent factors (TEF) of 24 PAH. Particularly 7H-benzo[c]fluorene, dibenzopyrene isomers and alkylated PAH (in particular 5-methylchrysene and 1-methylpyrene) turned out to have a huge impact on the toxicity and must not be neglected in future risk assessment. In detail, dibenzopyrenes have a high impact on toxicity predominantly in pyrogenic materials (21% to 84%; mean: 59%) whereas 7H-benzo[c]fluorene dominates toxicity of petrogenic materials (up to 80%; mean: 26%). However, in the studied mixed environmental samples the toxic impact of both groups together is as high as about 80%. Many non-EPA PAH are not considered in risk assessment and amongst them there are some very toxic ones. This needs to be carefully evaluated in future studies. |
| Databáze: | OpenAIRE |
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