Determination of petroleum residues dissolved and/or finely dispersed in surface seawater

Ehrhardt, Manfred; Burns, Kathryn A.

doi:10.1002/9783527613984.ch21

Cited by 6 publications

(5 citation statements)

References 10 publications

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“…All blanks, standards and samples were measured in a Teflon-capped 1-cm silica fluorescence cell under identical instrumental settings and conditions. The methods for estimation of petroleum hydrocarbons in water and fish were calibrated using replicate recovery tests on a sample spiked with known concentrations of the selected standard (Hunt et al 1986;Abdullah et al 1996;Ehrhardt and Burns, 1999;Chouksey et al 2004). Appropriate blanks were analyzed with each set of samples, together with standard reference material (Chrysene) for quality assurance/quality control.…”

Section: Methodsmentioning

confidence: 99%

Petroleum hydrocarbon concentrations in ten commercial fish species along Tamilnadu coast, Bay of Bengal, India

Veerasingam

Venkatachalapathy

Raja

et al. 2011

Environ Sci Pollut Res

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At present, as Tamilnadu coastal area is in a rapid development stage of new harbour, chemical industries, power plants, oil exploration and other large-scale industries, further assessment of petroleum hydrocarbons and the various hydrodynamic conditions acting in the region are to be studied in detail and continuous pollution monitoring studies should be conducted for improving the aquatic environment. The results will also be useful for pollution monitoring program along the coastal region and also to check the levels of petroleum hydrocarbons.

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Section: Methodsmentioning

confidence: 99%

Petroleum hydrocarbon concentrations in ten commercial fish species along Tamilnadu coast, Bay of Bengal, India

Veerasingam

Venkatachalapathy

Raja

et al. 2011

Environ Sci Pollut Res

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“…Total hydrocarbons (THC) were sampled with Niskin bottles at 3 depth levels (Stn 2: 0, 10 and 70 m; Stn 4: 0, 10, and 18 m) and determined by integration of the fluorescence emission spectra measured in a Perkin Elmer LS50B spectrofluorimeter between 370 and 386 nm (excitation at 310 nm) after hexane extraction (Ehrhardt 1983). The concentrations were computed after calibration with fuel from the 'Prestige' collected from the sea in Bacteria.…”

Section: Methodsmentioning

confidence: 99%

Enhanced bacterioplankton activity after the Prestige oil spill off Galicia, NW Spain

Bode¹,

González²,

Lorenzo³

et al. 2006

Aquat. Microb. Ecol.

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The response of coastal bacterioplankton communities to the 'Prestige' oil spill in November 2002 was investigated off A Coruña (NW Spain). Abundance and activity (leucine uptake) of bacterioplankton communities were analysed in relation to total soluble hydrocarbon concentrations (THC) measured monthly for 1 yr after the spill. Temperature, chlorophyll a, total and particulate organic carbon (TOC and POC, respectively), along with oxygen concentrations were also measured. The highest THC values (140 µg l -1 ) were found near the coast shortly after the spill, decreasing thereafter, although peak concentrations of 75 µg l -1 were detected in summer. Besides those peaks, THC was much lower and was not correlated with TOC or with bacterial abundance or activity. In contrast, bacterial variables were significantly correlated with water temperature, chlorophyll a and TOC concentrations. Compared to data obtained before the spill, bacterial abundance did not change but bacterial activity was significantly enhanced, especially during winter and summer. Potential hydrocarbon degradation by bacteria was indicated by elevated production rates and an increase in the apparent oxygen utilisation during winter. The estimated degradation rates could account for the observed decrease in THC after the initial spill. Changes in hydrocarbons after the winter, however, could not be related to bacterial production, as the latter was more related to changes in phytoplankton biomass and TOC.

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“…oceanogr.. 47(2).1999 Salinity and pH were determined with a retractometer (Atago) and a Beckman potentiometer, respectively. Total sulphide and phenol concentrations, biological oxygen demand (BOD) and chemical oxygen demand (COD) (APHA, 1985), dissolved/dispersed petroleum hydrocarbons (Ehrhardt, 1983), as well as phosphate and silicate (Grasshoff, 1976), nitrate and nitrite (Treguer & Le Corre, 1975) and total ammonia (Strickland & Parsons, 1968) concentrations were analysed.…”

Section: Eftluent Samples and Analysesmentioning

confidence: 99%

Evaluation of produced water toxicity from an oil maritime terminal through Skeletonema costatum toxicity tests

Aidar

Sigaud-Kutner

Bicega

et al. 1999

Rev. Bras. Oceanogr.

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. Abstract: The liquid eftluent from an oil maritime terminal, with produced water as the main component, had its toxicity evaluated through toxicity tests with the diatom Skeletonema costatum. Two previously treated eftluent samples (eftluents A and B), were provided by PETROBRAS for the experiments. Both samples presented high salinity (67%0for eftluent A and 62%0for eftluent B) and low pH values (6.2), whereas total sulphide, phenol and nutrient content, dissolvedldispersed petroleum hydrocarbon concentration, BOD and COD values were quite different from each other. During the toxicity experiment, three replicate flasks with samples for each treatment were exposed to a light radiation of 266).tEm-2S-Iand maintained under a 10 h/l4 h light/dark cycle, at a temperature of 24 :t 2°C. The ECSOvalues could not be accurately estimated for eftluent A: 60 h and 132 h afier starting the experiment they were below 3% and between 3-6% eftluent concentration, respectively. Synergistic effects between eftluent toxicity and salinity on the growth of S. costatum were detected. The eftluent B showed higher toxicity: the ECSOvalues were 0.17% and 0.40% of eftluent concentrations, afier 48 h and 96 h, respectively. These results evidenced the deleterious effects of residual organic compounds contained in the aqueous eftluents from the oil terminal under the present pretreatment on S. costatum. ln the light of the present data, the direct disposal of these eftluents into São Sebastião Channel waters might be very hazardous to its indigenous biota.. Resumo: A toxicidade do efluente líquido do "Outos e Terminais Centro-Oeste São Paulo" (OTCS)terminal marítimo de petróleo da PETROBRAS, em São Sebastião (SP, Brasil), cujo principal componente é a água de produção, foi avaliada através de testes de toxicidade com a diatomácea Skeletonema costatum. Amostras de dois efluentes (A e B), previamente tratados pela PETROBRAS, foram utilizadas nos experimentos. As duas amostras apresentaram alta salinidade (A=67%0;B=62%0)e baixo valor de pH (6,2), enquanto que as suas concentrações de sulfetos, fenóis e hidrocarbonetos de petróleo dissolvidos/dispersos, bem como os seus valores de OBO e OQO, foram bastante distintos. Nos experimentos de toxicidade, os frascos experimentais, em triplicata, para cada tratamento foram expostos à radiação luminosa fluorescente de 266 Ilm-2S-I e mantidas em um ciclo luz/escuro de 10 h/l4 h, a uma temperatura de 24 :t 2°C. Os valores de CEso não puderam ser determinados com precisão para o efluente A: após 60 h e 132 h do início dos experimentos esses valores estavam abaixo de 3% e entre 3-6% da concentração de efluente, respectivamente. Foi observado sinergismo entre a toxicidade e a salinidade do efluente sobre o crescimento de S. costatum. O efluente B apresentou uma toxicidade mais elevada: os valores de CEso foram 0,17% e 0,40% da concentração do efluente, após 48 h e 96 h, respectivamente. Estes resultados evidenciaram claramente os efeitos deletérios dos compostos orgânicos residuais contidos no efluente l...

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Determination of petroleum residues dissolved and/or finely dispersed in surface seawater

Cited by 6 publications

References 10 publications

Petroleum hydrocarbon concentrations in ten commercial fish species along Tamilnadu coast, Bay of Bengal, India

Petroleum hydrocarbon concentrations in ten commercial fish species along Tamilnadu coast, Bay of Bengal, India

Enhanced bacterioplankton activity after the Prestige oil spill off Galicia, NW Spain

Evaluation of produced water toxicity from an oil maritime terminal through Skeletonema costatum toxicity tests

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Determination of petroleum residues dissolved and/or finely dispersed in surface seawater

Cited by 6 publications

References 10 publications

Petroleum hydrocarbon concentrations in ten commercial fish species along Tamilnadu coast, Bay of Bengal, India

Petroleum hydrocarbon concentrations in ten commercial fish species along Tamilnadu coast, Bay of Bengal, India

Enhanced bacterioplankton activity after the Prestige oil spill off Galicia, NW Spain

Evaluation of produced water toxicity from an oil maritime terminal through Skeletonema costatum toxicity tests

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Enhanced bacterioplankton activity after the Prestige oil spill off Galicia, NW Spain