Toxicity Identification Evaluation of Lake Orta (Northern Italy) Sediments Using the Microtox System

Guzzella, Licia; Bartone, C.; Ross, Philippe; Tartari, Gabriele; Muntau, H.

doi:10.1006/eesa.1996.0104

Cited by 23 publications

(10 citation statements)

References 7 publications

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“…In this study 226 Ra ranged from <0.016 to 10.9 Bq L -1 and 228 Ra from <0.032 to 10.5 Bq L -1 which is similar to a previous study in Campos Basin, where the levels of these radionuclides ranged from 0.012 to 6.0 Bq L -1 for 226 Ra and from <0.05 to 12.0 Bq L -1 for 228 Ra (Vegueria et al 2002). Brazilian PW exhibits the same radioisotope levels as those reported elsewhere (E&P Forum 1994;Utvik 1999;Lysebo and Strand 1998;Guzella et al 1996).…”

Section: Inorganic Constituentssupporting

confidence: 90%

Evaluation of Produced Water from Brazilian Offshore Platforms

et al. 2011

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Chemistry and toxicity of produced water (PW) from offshore platforms operated by Petrobras in Brazil were investigated. Three studies -PW monitoring, detailed composition and temporal variability -were conducted during 1996, 2001 and 2006 Median chronic toxicity using Lytechinus variegatus showed a NOEC = 1.3%. These results for Brazilian PW are similar to those for the North Sea, Gulf of Mexico, Australia and other regions of the world. Dispersion plumes modelled using CORMIX and CHEMMAP predicted that PW can be diluted rapidly after discharge and that permissible levels for all chemical parameters in seawater cited in the Brazilian Resolution CONAMA 357/05 are attained within 500 m of the discharge point. Over 10 years (1998-2010) of monitoring in the vicinity of the Brazilian platforms did not show alterations in sea water quality, supporting the predictions of the dispersion plume modelling. Despite no observed alteration in seawater quality around oil and gas production platforms, the authors recognize the importance of continuous evaluation of the impact of PW discharges from a risk assessment perspective, and studies of bioaccumulation and the use of biomarkers, among other initiatives currently implemented by Petrobras in areas with large volumes of PW discharge. Up to and including 2011, Petrobras remains the major producer of oil and gas in Brazil and the total discharge of produced water by the country is essentially the volume that is discharged by offshore Petrobras operations. In 2005, the average total volume of PW discharged offshore on the Brazilian coast was 73 million m 3 /year, representing less than 3% PW discharged onto other oceans worldwide.

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Section: Inorganic Constituentssupporting

confidence: 90%

Evaluation of Produced Water from Brazilian Offshore Platforms

et al. 2011

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“…Microtox ® is a test that measures the inhibition of the light emission of bioluminescent bacteria (Vibrio fischeri) caused for the presence of toxic compounds. The obtained data was used to calculate the EC 50 , which is the percentage of sample dilution (v/v) that causes a 50% reduction in bacteria bioluminescence [20,21]. In Fig.…”

Section: Sulfamethoxazole Abatement Biodegradability and Toxicity Ofmentioning

confidence: 99%

Sulfamethoxazole abatement by means of ozonation

Dantas

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Sans

et al. 2008

Journal of Hazardous Materials

258

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“…Microorganisms are currently used in ecological monitoring as biotests (Kratasyuk, 1990;Kratasyuk et al, 1996;Grabert and Kossler, 1997;Bulish and Isenberg, 1981;Stom et al, 1992;Drzyzga et al, 1995;Guzzella et al, 1995;Cheung et al, 1996;Natecz-Jawecki et al, 1997;Wood and Gruber, 1996). Bioluminescence biotesting is classi"ed among integral toxicity assays (Kratasyuk 1990;Kratasyuk et al, 1996;Grabert and Kossler, 1997;Bulish and Isenberg, 1981;Stom et al, 1992;Drzyzga et al, 1995).…”

Section: Introductionmentioning

confidence: 99%