Brazilian Oil Spills Chemical Characterization--Case Studies

Meniconi, Maria de Fátima Guadalupe; Gabardo, Irene Terezinha; Carneiro, Maria Eulalia Rocha; Barbanti, Silvana M.; Silva, Gilson Cruz da; Massone, Carlos German

doi:10.1080/713848377

Cited by 78 publications

(23 citation statements)

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“…As a general characteristic, the concentrations of allochthonous PAHs in the sediments of Taylor Creek are lower than the moderately to highly PAHs polluted sites worldwide (Tan and Heit, 1981;Baumard, et al, 1988;Meniconi, et al, 2002;Venturini and Tommasi, 2004). However, the values are significantly elevated when compared with typical levels of PAHs found in pristine areas (Cripps, 1994;Baumard, et al, 1998 andWebster, et al, 2001).…”

Section: Discussionmentioning

confidence: 81%

Preliminary assessment of trace metals and polycyclic aromatic hydrocarbons in the sediments

Okafor

Opuene

2007

Int. J. Environ. Sci. Technol.

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Total concentrations of Cd, Cr, Co, Fe, Pb, Ni, Mn and Zn were determined by atomic absorption spectrophotometry in the surface sediments of Taylor Creek, Southern Nigeria. The most concentrated trace metals, ranging from 113.2 to 5160.7 mg/g-dry weights were Fe, Pb, Mn, Ni and Zn. There was no significant variation in sediment-associated metal levels (P>0.05). The Metal Pollution Index (MPI) was highest at Agbia/Nedugo and is attributed to local contamination of the Creek. The concentrations of low molecular weight polycyclic aromatic hydrocarbons (PAHs) were also detected and quantified in the sediments by capillary gas chromatography equipped with a flame ionization detector. The concentration levels of 178.1-1266.3 mg/g-wet weights were high for the PAHs. The results indicate that the pollutants, which are bio-accumulatable, could contribute to inferior biodiversity, and shifts in community composition from sensitive to tolerant taxa.

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Section: Discussionmentioning

confidence: 81%

Preliminary assessment of trace metals and polycyclic aromatic hydrocarbons in the sediments

Okafor

Opuene

2007

Int. J. Environ. Sci. Technol.

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“…The study area host the MORio -Microbial Observatory of Rio de Janeiro. Samples are taken along a gradient of polution going from a river well above the estuarine zone, from an inner channel which receives heavily polluted waste water characterized by oil sewage waters (Meniconi et al 2002, Brito et al 2006 to seawater 25 km off the bay's entrance, in the adjacent Atlantic Ocean.…”

Section: Sampling Sitesmentioning

confidence: 99%

Towards a Latin American and Caribbean international census of marine microbes (LACar ? ICoMM): overview and discussion on some current research directions

Artigas¹,

Otero²,

Paranhos³

et al. 2007

RBT

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“…[3][4][5] This class of organic compounds has biogenic and anthropogenic sources. Natural inputs are comprised mostly of vascular plants, algae, microorganisms and early diagenesis of natural products, whereas petroleum and its derivatives are generally examples of humanrelated sources.…”

Section: Introductionmentioning

confidence: 99%

Geochemical markers as a tool to assess sedimentary organic matter sources of the Laguna Estuarine System, south Brazil: aliphatic and polycyclic aromatic hydrocarbons

Tarozo

Frena

Augusto

et al. 2010

J. Braz. Chem. Soc.

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Amostras de sedimentos superficiais do Sistema Estuarino de Laguna foram analisadas objetivando a identificação das fontes de matéria orgânica. Razões entre n-alcanos selecionados, elevados teores de hidrocarbonetos alifáticos (HA) (média de 9.168 µg g -1 de carbono orgânico, CO) e policíclicos aromáticos (HPA) (média total de 426.593 ng g -1 CO), e a distribuição de hopanos com estereoquímica αβ detectados nas amostras da Lagoa de Santo Antônio foram evidências de que o aporte de hidrocarbonetos petrogênicos prevalece sobre os de fontes naturais. Nas demais amostras estudadas, a distribuição de HA (de 38 até 2.749 µg g -1 CO), a detecção de hopenos e hopanos-ββ sugerem hidrocarbonetos de fontes mistas. Todavia, o teor de HPA em todas as amostras (de 7.731 até 786.469 ng g -1 CO, sendo que os aromáticos alquilados representaram > 92% do total) revelou contaminação petrogênica crítica. As atividades pesqueira e urbana são fontes potenciais dos hidrocarbonetos petrogênicos detectados nas amostras sedimentares.Surface sediment samples from the Laguna Estuarine System were analyzed to identify organic matter sources. The ratios between selected n-alkanes, high concentrations of aliphatic hydrocarbons (AH) (average of 9,168 µg g -1 of organic carbon, OC) and polycyclic aromatic hydrocarbons (PAH) (total average of 426,593 ng g -1 OC), and the hopanes distribution with αβ stereochemistry found in the Santo Antônio Lagoon samples were evidence that hydrocarbon inputs from petrogenic sources predominate over natural sources. In the other samples studied, the AH distribution (from 38 to 2,749 µg g -1 OC), and detection of hopenes and hopanes-ββ suggest mixed sources of hydrocarbons. Nevertheless, PAH concentrations in all samples (from 7,731 to 786,469 ng g -1 OC, whereof alkyl naphthalenes accounted for > 92% of the total) indicated critical petrogenic contamination. Fishing and urban activities are potential sources to the petrogenic hydrocarbons detected in these sediment samples. Keywords: hydrocarbons, hopanes, PAH, sediment, chromatography IntroductionEstuaries are important areas of world's coastal zones. In general, they are highly productive and provide spawning and nursery grounds for migratory species, besides playing a significant role in the global carbon cycle.1,2 Furthermore, an overwhelming majority of the human populations is concentrated along or near coasts, which inevitably leads to complex problems concerning environmental quality due to the residues generated by miscellaneous human activities.Along with various other organic and inorganic contaminants, the study of sedimentary aliphatic hydrocarbons (AH) (e.g., n-alkanes and hopanes) provides an important tool to assess organic matter sources and pollution levels in aquatic ecosystems. [3][4][5] This class of organic compounds has biogenic and anthropogenic sources. Natural inputs are comprised mostly of vascular plants, algae, microorganisms and early diagenesis of natural products, whereas petroleum and its derivatives are generally examples of hu...

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Brazilian Oil Spills Chemical Characterization--Case Studies

Cited by 78 publications

References 0 publications

Preliminary assessment of trace metals and polycyclic aromatic hydrocarbons in the sediments

Preliminary assessment of trace metals and polycyclic aromatic hydrocarbons in the sediments

Towards a Latin American and Caribbean international census of marine microbes (LACar ? ICoMM): overview and discussion on some current research directions

Geochemical markers as a tool to assess sedimentary organic matter sources of the Laguna Estuarine System, south Brazil: aliphatic and polycyclic aromatic hydrocarbons

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