Environmental assessment of polycyclic aromatic hydrocarbons (PAHs) in surface sediments of the Santander Bay, Northern Spain

Viguri, Javier R.; Verde, J. C.; Irabien, Ángel

doi:10.1016/s0045-6535(02)00105-4

Cited by 185 publications

(72 citation statements)

References 25 publications

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“…The abundance of pPAHs in the marine and nonmarine K-T BIRs was compared ( Table S2) and reveals that the marine K-T BIRs contain a significantly lower abundance of pPAHs than the nonmarine K-T BIRs. Chicxulub crater is 2,303 km from the nearest site in this study, it has been shown that pPAHs are concentrated at or close to their source (18) this can explain the lower pPAH abundance in distant (Ϸ10,000 km) marine sites. It is also apparent in Fig.…”

Section: Vaporization Of Hydrocarbons As a Potential Source For The Psupporting

confidence: 49%

“…On entering the aquatic environment (as would be the case in the depositional environments of the 6 sites), pPAHs tend to rapidly become associated with sediments and suspended particles (18) because of their hydrophobicity. Viguri et al (18) have shown that a positive exponential relationship exists between the amount of organic matter present in sediments and pPAH concentrations. The weight % of bulk organic carbon was determined for the rock samples with a precision of Ϯ0.07% [using a continuous flow Fisons 1500 elemental analyzer described in ref .…”

Section: Resultsmentioning

confidence: 99%

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Geochemical evidence for combustion of hydrocarbons during the K-T impact event

Belcher¹,

Finch

Collinson³

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

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It has been proposed that extensive wildfires occurred after the Cretaceous-Tertiary (K-T) impact event. An abundance of soot and pyrosynthetic polycyclic aromatic hydrocarbons (pPAHs) in marine K-T boundary impact rocks (BIRs) have been considered support for this hypothesis. However, nonmarine K-T BIRs, from across North America, contain only rare occurrences of charcoal yet abundant noncharred plant remains. pPAHs and soot can be formed from a variety of sources, including partial combustion of vegetation and hydrocarbons whereby modern pPAH signatures are traceable to their source. We present results from multiple nonmarine K-T boundary sites from North America and reveal that the K-T BIRs have a pPAH signature consistent with the combustion of hydrocarbons and not living plant biomass, providing further evidence against K-T wildfires and compelling evidence that a significant volume of hydrocarbons was combusted during the K-T impact event.

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Section: Vaporization Of Hydrocarbons As a Potential Source For The Psupporting

confidence: 49%

Section: Resultsmentioning

confidence: 99%

Geochemical evidence for combustion of hydrocarbons during the K-T impact event

Belcher¹,

Finch

Collinson³

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

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“…Samples of 20 kg of 50 cm polluted depth sediment were obtained from the estuary of Suances (Cuchia) and the bay of Santander (Astilleros and Raos) using a grab sampler [8]. All samples were homogenised and transferred in clean glass jars, capped with aluminium foil and kept in the dark at 4ºC until analysis.…”

Section: Methodsmentioning

confidence: 99%

“…Sediments from both estuaries contain significant concentrations of heavy metals and organic pollutants derived from intensive industrial, agricultural and urban activities, making necessary treatment and confined disposal to manage them properly [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Sintering behaviour of ceramic bodies from contaminated marine sediments

Romero

Andrés

Alonso

et al. 2008

Ceramics International

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The effect of the heating temperature on the properties of sintered ceramic bodies from three different contaminated marine sediments was investigated. The sintering behaviour was evaluated by means of the variation of shrinkage degree, bulk density, water absorption, open and closed porosity, while the phases transformation were investigated by differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results have shown that the sintering process follows a viscous liquid phase mechanism due to the formation of a glassy phase. The optimum sintering temperature is 1125ºC for Astilleros and Cuchia sediments and 1150ºC for Raos sample. Above this temperature, a significant overfiring with an increase of closed porosity was observed. Water absorption values and mechanical properties as bending and compressive strengths of sintered bodies show that the investigated marine sediments are suitable to be used as secondary raw materials in ceramic tiles and bricks production.

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“…The concentration level of PAHs was close to rivers such as the River estuaries in Malaysia (Zakaria et al 2002), Kyeonggi Bay in Korea (Kim et al 1999), Santander Bay in Spain and Susquehanna River in USA (Viguri et al 2002;Ko et al 2007). The highest PAHs concentration in sediment occurred also in China, i.e., in the rivers around Tianjin city (ranging from 3.41 to 346 µg/g, mean = 59.967 µg/g) (Shi et al 2005).…”

Section: Ranking Pahs Concentration In Rivers Of the Worldmentioning

confidence: 88%

Concentration Levels and Potential Ecological Risks of Polycyclic Aromatic Hydrocarbons in Chinese Rivers

2009

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Polycyclic aromatic hydrocarbons (PAHs) are one of the most important persistent organic pollutants (POPs) and are widespread in surface waters in China. Based on the literature surveyed, concentration levels and geographic distribution of 16 PAHs in major Chinese rivers were summarized. The results showed that 2-3-ring PAHs were predominated in water, 4-ring PAHs were abundant in suspended particular matter (SPM), and 3-6 ring PAHs were the main chemical forms in sediment. In general, concentration levels of PAHs in rivers from northern China were higher than those from southern China. There existed a significant difference between concentration level of PAHs from the north and from the south. In comparison with concentration levels of PAHs in the world rivers, level of PAHs in dissolved phase in Chinese rivers was higher than those from other countries, while PAHs concentration in SPM and sediment of Chinese rivers was in the middle range. The quotient method was used to screen the potential risk of PAHs to aquatic organisms. It appeared that 7 among 16 PAHs, i.e., phenanthrene, anthracene, fluoranthene, pyrene, benzo [a]anthracene, chrysene and benzo[a]pyrene, might have potential adverse effects to aquatic system, which should be particularly concerned.

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Environmental assessment of polycyclic aromatic hydrocarbons (PAHs) in surface sediments of the Santander Bay, Northern Spain

Cited by 185 publications

References 25 publications

Geochemical evidence for combustion of hydrocarbons during the K-T impact event

Geochemical evidence for combustion of hydrocarbons during the K-T impact event

Sintering behaviour of ceramic bodies from contaminated marine sediments

Concentration Levels and Potential Ecological Risks of Polycyclic Aromatic Hydrocarbons in Chinese Rivers

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