Genotoxicity of industrial wastes and effluents

Claxton, Larry D.; Houk, Virginia S.; Hughes, Thomas J.

doi:10.1016/s1383-5742(98)00008-8

Cited by 226 publications

(104 citation statements)

References 7 publications

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“…Previous studies reported that conventional wastewater processes did not effectively remove many chemical contaminants, and may actually increase the genotoxicity of wastewaters (Claxton et al 1998). In fact, Shuttleworth et al (1995) reported that the high molecular weight PAHs, many of which are strong genotoxins, seem to be recalcitrant to microbial degradation.…”

Section: Resultsmentioning

confidence: 99%

Assessing the Potential Risk of Oil-Field Produced Waters Using a Battery of Bioassays/Biomarkers

Chen

et al. 2008

Bull Environ Contam Toxicol

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A battery of in vitro bioassays was conducted to assess the potential risks of organic extracts from oilfield produced wastewaters and from the receiving waters. In SOS/umu bioassay for the genotoxicity, our results showed that direct and indirect genotoxic substances were observed and metabolic activation greatly enhanced the genotoxic effects. In Ethoxyresorufin-O-deethylase bioassay, levels of AhR-agonists, expressed as 2,3,7,8-tetrachlorodibenzop-dioxin equivalences, varied from 13.3 to 16.7 pg L -1 . We conclude that oilfield produced wastewater contains substantial quantity of indirect genotoxic substances exclusive of AhR agonists. Both genotoxic and AhR agonistic chemicals could not be effectively removed by the treatment processes.

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Section: Resultsmentioning

confidence: 99%

Assessing the Potential Risk of Oil-Field Produced Waters Using a Battery of Bioassays/Biomarkers

Chen

et al. 2008

Bull Environ Contam Toxicol

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“…Moreover, waste treatment does not always reduce the toxicity of an effluent and, in some instances, may increase toxicity (Claxton et al, 1998). This study has shown that the higher plants species L. sativa and A. cepa can be effectively used to assess toxicity of landfill leachate and that an integrated analysis of wastewaters should be considered, in which chemical analysis can determine the presence and concentrations of compounds, while bioassays can evaluate the toxic and synergistic effects of these compounds.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of phytotoxicity of municipal landfill leachate before and after biological treatment

2015

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In the present study, leachate toxicity of a municipal solid waste landfill located in the Sinos River Valley region (southern Brazil) was evaluated using plant bioassays. Leachate toxicity was assessed by analysis of seed germination and root elongation of lettuce (Lactuca sativa L.) and rocket plant (Eruca sativa Mill.) and root elongation of onions (Allium cepa L.). Bioassays were performed by exposing the seeds of L. sativa and E. sativa and the roots of A. cepa to raw leachate, treated leachate (biological treatment) and negative control (tap water). The levels of metals detected in both samples of leachate were low, and raw leachate showed high values for ammoniacal nitrogen and total Kjeldahl nitrogen. There is a reduction in the values of several physicochemical parameters, which demonstrates the efficiency of the treatment. Both L. sativa and A. cepa showed a phytotoxic response to landfill leachate, showing reduced root elongation. However, the responses of these two plant species were different. Root elongation was significantly lower in A. cepa exposed to treated leachate, when compared to negative control, but did not show any difference when compared to raw leachate. In L. sativa, seeds exposed to the raw leachate showed significant reduction in root elongation, when compared to treated leachate and negative control. Seed germination showed no difference across the treatments. The results of the study show that plant species respond differently and that municipal solid waste landfill leachate show phytotoxicity, even after biological treatment. Palavras-chave: bioensaios com plantas, poluição da água, tratamento de efluentes, efeitos tóxicos. Keywords

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“…Genotoxicity of numerous organic substances in aquatic environment is associated with particulate matter while others are distributed in the water-soluble fraction (Claxton and Houk, 1998). Elevated levels of MN were detected in flounder and mussels even 8 months after the crude oil spill at the B uting_ e oil terminal .…”

Section: Factors Influencing Biomarker Levels In Flounder In the Gulfmentioning

confidence: 99%

Measurements of biomarker levels in flounder (Platichthys flesus) and blue mussel (Mytilus trossulus) from the Gulf of Gdańsk (southern Baltic)

Kopecka¹,

Lehtonen²,

Baršienė³

et al. 2006

Marine Pollution Bulletin

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In the framework of the EU funded BEEP project a set of biomarkers, gross morphometric indices and tissue concentrations of selected organic pollutants were measured in flounder (Platichthys flesus) and mussels (Mytilus trossulus) collected twice a year (April and October) from three sites in the inner Gulf of Gdań sk between autumn 2001 and spring 2003. In flounder, seasonal differences in most biomarkers were observed, but no correlations with tissue pollutant levels could be found. In mussels, highly variable levels in biomarker responses were seen, but no clear seasonal or spatial trends, directly related to tissue concentrations, could be established. The observed biomarkers distribution the study sites are probably mostly caused by interannual, seasonal and individual variability and, in case of flounder, possibly by exchange of stocks between the sampling sites.

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Genotoxicity of industrial wastes and effluents

Cited by 226 publications

References 7 publications

Assessing the Potential Risk of Oil-Field Produced Waters Using a Battery of Bioassays/Biomarkers

Assessing the Potential Risk of Oil-Field Produced Waters Using a Battery of Bioassays/Biomarkers

Evaluation of phytotoxicity of municipal landfill leachate before and after biological treatment

Measurements of biomarker levels in flounder (Platichthys flesus) and blue mussel (Mytilus trossulus) from the Gulf of Gdańsk (southern Baltic)

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