Linking toxicity profiles to pollutants in sludge and sediments
Language English Country Netherlands Media print-electronic
Document type Journal Article
PubMed
27694046
DOI
10.1016/j.jhazmat.2016.09.051
PII: S0304-3894(16)30873-1
Knihovny.cz E-resources
- Keywords
- Constrained correspondence analysis (CCA), Contamination, Priority pollutants, Sediments, Sludge, Toxicity,
- MeSH
- Water Pollutants, Chemical toxicity MeSH
- Chromatography, Gas MeSH
- Geologic Sediments * MeSH
- Halogenated Diphenyl Ethers chemistry toxicity MeSH
- Plant Roots drug effects growth & development MeSH
- Environmental Monitoring MeSH
- Sewage adverse effects MeSH
- Polycyclic Aromatic Hydrocarbons toxicity MeSH
- Rivers MeSH
- Lactuca drug effects growth & development MeSH
- Metals, Heavy toxicity MeSH
- Publication type
- Journal Article MeSH
- Names of Substances
- Water Pollutants, Chemical MeSH
- Halogenated Diphenyl Ethers MeSH
- Sewage MeSH
- pentabromodiphenyl ether MeSH Browser
- Polycyclic Aromatic Hydrocarbons MeSH
- Metals, Heavy MeSH
Obtaining a complex picture of how pollutants synergistically influence toxicity of a system requires statistical correlation of chemical and ecotoxicological data. In this study, we determined concentrations of eight potentially toxic metals (PTMs) and four groups of organic pollutants in 15 sewage sludge and 12 river sediment samples, then linked measured contaminant concentrations to the toxicity of each matrix through constrained correspondence analysis (CCA). In sludge samples, Hg, As, hexachlorohexane (HCH), polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane (HBCD) influenced the toxicity profiles, with the first four having significant effects and HBCD being marginally significant. In sediment samples, Hg, As, PBDEs, hexachlorobenzene (HCB), dichlorodiphenyltrichloroethane (DDT), HBCD, HCH and polycyclic aromatic hydrocarbons (PAHs) were found to explain toxicity profiles with Hg, As, PBDEs, HCB, DDT, HBCD, and HCH having significant effects and PAHs being marginally significant. Interestingly, HCH was present in small amounts yet proved to have a significant impact on toxicity. To the contrary, PAHs were often present in high amounts, yet proved to be only marginally significant for sediment toxicity. These results indicate that statistical correlation of chemical and ecotoxicological data can provide more detailed understanding of the role played by specific pollutants in shaping toxicity of sludge and sediments.
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