Natural and anthropogenic hydrocarbon inputs to sediments of Patos Lagoon Estuary, Brazil

Medeiros, Patricia M.; Bı́cego, Márcia Caruso; Castelao, Renato M.; Rosso, Clarissa Del; Fillmann, Gilberto; Zamboni, Ademilson Josemar

doi:10.1016/j.envint.2004.07.001

Cited by 177 publications

(103 citation statements)

References 34 publications

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“…High concentrations of Ph (>100 ng/g) were found at sites number 59, 63, 77, 78 and 94 in this study, indicating a significant contamination with petroleum hydrocarbon at these sites. Short-chain even number n-alkanes (such as C 16 and C 18 ) would be degraded prior to significant alternation of the counterparts, thus the values of C 18 /Ph ratios for moderate to severe biodegradation of petroleum-derived OM may be lower than 1 (Medeiros et al, 2005;Mille et al, 2007). In the present study, however, the C 18 /Ph ratios are much higher than 1, even though in those sites (59, 63, 77, 78 and 94) it had high Ph concentrations.…”

Section: Aliphatic Hydrocarbonsmentioning

confidence: 99%

Sources and preservation of organic matter in soils of the wetlands in the Liaohe (Liao River) Delta, North China

Lin

et al. 2013

Marine Pollution Bulletin

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a b s t r a c tTotal organic carbon, total nitrogen, d 13 C org , d 15 N, and aliphatic and polyaromatic hydrocarbons of fiftyfive soil samples collected from the coastal wetlands of the Liaohe Delta were measured, in order to determine the sources and possible preservation of organic matter (OM). The d 15 N and d 13 C org values in the samples ranged from 3.0‰ to 9.4‰ and from À30.4‰ to À20.3‰, respectively, implying that the OM in the soils is predominantly derived from C 3 plant. The long-chain n-alkanes had a strong odd-over-even carbon number predominance, suggesting a significant contribution from waxes of higher plants. The ubiquitous presence of unresolved complex mixture, alkylated polycylic aromatic hydrocarbons and typical biomarkers of petroleum hydrocarbons (pristane, phytane, hopanes and steranes) indicates that there is a contribution of petroleum hydrocarbons to the organic carbon pool in the wetland soils. P. australis-vegetated wetlands have strong potentials for the preservation of organic carbon in the wetlands.

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Section: Aliphatic Hydrocarbonsmentioning

confidence: 99%

Sources and preservation of organic matter in soils of the wetlands in the Liaohe (Liao River) Delta, North China

Lin

et al. 2013

Marine Pollution Bulletin

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“…[11][12][13] Apart from being of biogenic origin, saturated hydrocarbons can also be related to petroleum sources, but they show no clear odd/even predominance and a characteristic unresolved complex mixture. 14,15 …”

Section: Introductionmentioning

confidence: 99%

Distribution of lipid compounds in sediments from Conceição Lagoon, Santa Catarina Island, Brazil

Silva

Oliveira²,

Oliveira

et al. 2008

J. Braz. Chem. Soc.

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Compostos orgânicos provenientes de cinco amostras de sedimentos e um perfil com 75 cm foram coletados na Lagoa da Conceição, localizada na Ilha de Santa Catarina, com o objetivo de avaliar fontes de matéria orgânica. Os resultados que foram baseados na relação C:N:P, abundância relativa dos esteróis (com predomínio dos C 27 ), álcoois (0,2-1,2 µg g -1 ) e hidrocarbonetos lineares (0,4-5,0 µg g -1 ), e no uso do Índice Preferencial de Carbono (CPI), indicaram que a matéria orgânica é preferencialmente de origem terrestre (C/N > 10 e CPI > 2). Em todos os locais observaram-se correlações significativas entre as quantidades de fósforo (TP, média 5,20 µmol g -1 ) e carbono orgânico total (TOC, média 2,90 mmol g -1 ) com as frações de silte e argila. No perfil, que foi cronologicamente datado com o radionuclídeo 210 Pb, o intervalo de 55 a 75 cm apresentou predomínio de areia (> 50%). Entretanto, outros parâmetros, tais como TOC, TP e hidrocarbonetos também aumentaram nesse intervalo, o que sugere uma mudança na fonte de matéria orgânica.Lipid compounds from five sediment-water interface samples and a sediment core with 75 cm depth were used to assess sources of organic matter in Conceição Lagoon, located on Santa Catarina Island. The results which were based on the molar C:N:P ratios, relative abundance of sterols (dominated by the C 27 sterols), n-alkanols (0.2-1.2 µg g -1 ), n-alkanes (0.4-5.0 µg g -1 ) and the Carbon Preference Index (CPI), indicated that the organic matter is predominantly of terrestrial origin (C/N > 10 and CPI > 2). Total phosphorus (TP, average 5.20 µmol g -1 ) and organic carbon (TOC, average 2.90 mmol g -1 ) contents were well correlated with the silt and clay fractions at all locations. In the sediment core, chronologically dated with the radionuclide 210 Pb, the depth interval from 55 to 75 cm was dominated by the sand fraction (> 50%). However, parameters such as TOC, TP and n-alkane contents increased considerably at this depth suggesting a change in organic matter input sources.

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“…A mistura complexa não resolvida (UCM) constituiu de 50 a 90% da concentração dos NAH, que variou entre 2,5 µg g -1 e 193,8 µg g -1 . Na maior parte das amostras a distribuição dos n-alcanos foi unimodal com predomínio de compostos de número ímpar de átomos de carbono e máximos em nC 29 e nC 31 . Monolefinas ocorreram em baixas concentrações, enquanto as poliolefinas, incluindo isoprenoides ramificados e esqualeno, variaram entre 0,099 µg g -1 e 1,387 µg g -1 , com os baixos valores relativos aos NAH surgindo em áreas de forte influência continental e antrópica.…”

unclassified

“…NAH concentrations ranged from 2.5 µg g -1 to 193.8 µg g -1 of which the major fraction (53 to 93%) was composed by unresolved complex mixture (UMC). In most samples n-alkane distribution was dominated by compounds of odd carbon number showing maxima in nC 29 and nC 31 . Mono-olefins were at low concentrations and the polyolefins including highly branched isoprenoids and squalene varied from 0.099 µg g…”

mentioning

confidence: 99%

“…6,10,[17][18][19][20][21] Although the knowledge of hydrocarbon contamination in the Brazilian coastal zone is extremely important to preserve ecological resources and human health, few studies have been conducted on the fate of hydrocarbons in the vast coastal area of Brazil. [22][23][24][25][26][27][28][29][30][31] Also, little is known about the performance of the several indicative indexes found in the specialized literature to distinguish hydrocarbon origin and sources in tropical coastal regions.…”

mentioning

confidence: 99%

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Non-aromatic hydrocarbons in recent sediments of Sepetiba and Ilha Grande Bays, Brazil

Figueiredo¹,

Wagener²,

Dagaut³

et al. 2008

J. Braz. Chem. Soc.

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Realizou-se uma investigação nas Baías de Ilha Grande e de Sepetiba sobre a natureza dos hidrocarbonetos não-aromáticos (NAH) em seus sedimentos. A mistura complexa não resolvida (UCM) constituiu de 50 a 90% da concentração dos NAH, que variou entre 2,5 µg g -1 e 193,8 µg g -1 . Na maior parte das amostras a distribuição dos n-alcanos foi unimodal com predomínio de compostos de número ímpar de átomos de carbono e máximos em nC 29 e nC 31 . Monolefinas ocorreram em baixas concentrações, enquanto as poliolefinas, incluindo isoprenoides ramificados e esqualeno, variaram entre 0,099 µg g -1 e 1,387 µg g -1 , com os baixos valores relativos aos NAH surgindo em áreas de forte influência continental e antrópica. C 27 -C 33 hopanos foram encontrados em todas as amostras, assim como houve predominância da configuração 17 (H),21 (H), característica de origem petrogênica.An investigation was conducted in Ilha Grande and Sepetiba Bays aiming at identifying the nature of non-aromatic hydrocarbons (NAH) in surface sediments. NAH concentrations ranged from 2.5 µg g -1 to 193.8 µg g -1 of which the major fraction (53 to 93%) was composed by unresolved complex mixture (UMC). In most samples n-alkane distribution was dominated by compounds of odd carbon number showing maxima in nC 29 and nC 31 . Mono-olefins were at low concentrations and the polyolefins including highly branched isoprenoids and squalene varied from 0.099 µg g -1 to 1.387 µg g -1 with lower values relative to NAH appearing in areas of strong terrestrial and anthropogenic influence. Hopanes between C 27 and C 33 were observed in all samples with the predominant configuration 17 (H),21 (H), characteristic of a petrogenic origin.

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Natural and anthropogenic hydrocarbon inputs to sediments of Patos Lagoon Estuary, Brazil

Cited by 177 publications

References 34 publications

Sources and preservation of organic matter in soils of the wetlands in the Liaohe (Liao River) Delta, North China

Sources and preservation of organic matter in soils of the wetlands in the Liaohe (Liao River) Delta, North China

Distribution of lipid compounds in sediments from Conceição Lagoon, Santa Catarina Island, Brazil

Non-aromatic hydrocarbons in recent sediments of Sepetiba and Ilha Grande Bays, Brazil

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