Avaliação preliminar da biodegradabilidade de tensoativos aniônicos em água do mar

Mastroti, Ricardo Rodrigues; Sousa, Eduinetty Ceci Pereira Moreira de; Abessa, Denis Moledo de Souza; Sass, Vânia

doi:10.1590/s1413-77391998000200007

Cited by 7 publications

(4 citation statements)

References 13 publications

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“…In addition, salinity increases the concentration of humic substance in estuarine areas due to adsorption or aggregation with particles (Baalousha et al, 2006) and changes the ionic nature of surfactants by neutralizing anionic surfactant compounds. Surfactant adsorption in salt water might be due to changes in the partition with divalent cations, such as Ca 2+ , Mg 2+ , and Cu 2+ (Hong et al, 2013;Jeon et al, 2010;Mastroti et al, 1998). Surfactants are degraded in wastewater treatment but some end up in the sediment (Ivankovic & Hrenovic, 2010).…”

Section: Resultsmentioning

confidence: 99%

Surfactants in sediment of Itanhaém Estuary, São Paulo, Brazil

Cesar-Ribeiro

Prado

Rosa

2021

J Surfact & Detergents

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This study investigated surfactant levels in the sediment of Itanhaém Estuary through colorimetric methods with methylene blue active substances (MBAS). Samples were collected with a Van Veen bottom sampler at eight sampling points during autumn, winter, and spring of 2015. The results demonstrate growing detergent deposition in the sediment of the estuary. Surfactant concentration was higher (16.18 μg MBAS g À1 ) around the sewage treatment plant (STP) than in the estuary in autumn, after the vacation/summer season when the population of the city had increased due to tourism. There was a significant (p < 0.05) reduction in detergent concentration (to 14.94 μg MBAS g À1 ) in winter, after school vacation, while in spring the surfactants concentration for the STP was high only for the sampling points nearer the ocean. Surfactant concentrations differed significantly among sampling points (p < 0.05), with them being higher at those closer to the STP. Enrichment with high loads from anthropogenic sources associated with urbanization and tourism was responsible for the greater surfactant concentrations in areas near the STP. In conclusion, more efficient treatment of domestic effluent of the city of Itanhaém is needed, as is the control of clandestine discharge into the river since the accumulation of detergents in sediment can have harmful effects on aquatic life.

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Section: Resultsmentioning

confidence: 99%

Surfactants in sediment of Itanhaém Estuary, São Paulo, Brazil

Cesar-Ribeiro

Prado

Rosa

2021

J Surfact & Detergents

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“…Os surfactantes agem sobre a fertilidade, desenvolvimento embrionário, reprodução, hábitos alimentares e comportamento de animais aquáticos (Mittal & Garg, 1994;Barbieri et al, 2004b). Mastroti (1997) Wasielesky (2000) observou que, após 30 dias de exposição à amônia, a sobrevivência de F. paulensis no nível de segurança utilizado por esse autor não apresentou diferença significativas em relação ao controle. No entanto, os resultados, em termos de crescimento em peso úmido e biomassa final, mostraram que até mesmo uma concentração tão baixa de 0,91 mg L -1 de amônia, que equivaleu a 1/4 do nível de segurança determinado por Ostrensky & Wasielesky (1995) para Farfantepenaeus paulensis, causou retardo nos níveis de crescimento da mesma.…”

Section: Valores De Cl(i) 50unclassified

Effects of Surfactants DSS and LAS-C12 on Pink Shrimp (Farfantepenaeus paulenssi, Pérez-Farfante, 1967)

Barbieri¹

2008

Ecotoxicol. Environ. Contam.

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An evaluation was done of acute toxicity of the SDS (Sodium Dodecil Sulfonate) and LAS-C12 (Linear Alkylbenzene Sulfonate) using red shrimp (Farfantepenaeus paulensis) exposed to different concentration, for periods of up to 96 hours. The acute toxicity of SDS in larvae of the pink shrimp exposed to different concentrations of this substance were: 13,66 mg L–1 for 24 h of exposure; 11.89 mg L–1 for 48 h; 9.98 mg L–1 for 72 h, and 8.66 mg L–1 for 96 h. For LAS-C12 the acute toxicity in larvae of the pink shrimp exposed to different concentrations of this substance, for period of up to 96 h were 6.37 mg L–1 for 24 h of exposure; 5.32 mg L–1 for 48 h; 4.61 mg L–1 for 72 h; and 4.25 mg L–1 for 96 h.

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“…De acordo com os cálculos, a concentração média que causou efeito deletério a 50% dos embriões de Lytechinus variegatus, após 24 horas de exposição, foi CE(I) 50-24h = 2,89 mg.L -1 de DSS. Mastroti (1997) e Rachid (1996) obtiveram, respectivamente, CE 50-24h de 1,89 (1,83-1,97) mg.L -1 e 2,07 (1,87-2,29) mg.L -1 para a mesma substância e mesmo organismo-teste. Outros estudos como o de Pereira et al (2000) a CE(I) 50-24h foi calculada em 2,0 mg.L -1…”

Section: Lytechinus Variegatusunclassified

Efeito do naftaleno na microalga marinha Dunaliella tertiolecta, ouriço-do-mar Lytechinus variegatus e no microcrustáceos estuarinos Nitokra sp e Leptocheirus plumulosus

Cariello¹,

Sousa²

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Naphthalene is a major constituent of the oil soluble in water and this class of pollutants is framed in the priority list of persistent organic pollutants. The present study provides information on the effect of naphthalene in ecotoxicological tests with four different groups of aquatic organisms. Chronic tests with the marine microalgae Dunaliella tertiolecta and sea-urchin Lytechinus variegatus, acute and chronic tests with the estuarine benthic copepod Nitokra sp and acute tests with the estuarine amphipod Leptocheirus plumulosus. In the assessment of chronic effect, the average value of IC(I) 50-96h to marine microalgae was 29.01 mg.L-1 and the mean EC(I) 50-24h for sea urchin 0.30 mg.L-1. In chronic tests for estuarine copepod the obtained values to NOEC and OEC was ranged from 0.19 mg L-1 to 0.40 mg L-1. In acute tests the same organism have showed an average of LC(I) 50-96h in 13.4 mg.L-1 and for the estuarine amphipod the mean LC(I) 50-96h was 2.38 mg.L-1. These results demonstrate the potential effect on different classes of aquatic organisms. This may assist in environmental assessments in Brazil, when limits and guidelines are available and allow establishing conditions and standards of effluent discharge into water bodies in Brazil.

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Avaliação preliminar da biodegradabilidade de tensoativos aniônicos em água do mar

Cited by 7 publications

References 13 publications

Surfactants in sediment of Itanhaém Estuary, São Paulo, Brazil

Surfactants in sediment of Itanhaém Estuary, São Paulo, Brazil

Effects of Surfactants DSS and LAS-C12 on Pink Shrimp (Farfantepenaeus paulenssi, Pérez-Farfante, 1967)

Efeito do naftaleno na microalga marinha Dunaliella tertiolecta, ouriço-do-mar Lytechinus variegatus e no microcrustáceos estuarinos Nitokra sp e Leptocheirus plumulosus

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