Mobilization of PAHs and PCBs from In-Place Contaminated Marine Sediments During Simulated Resuspension Events

Latimer, James S.; Davis, Wayne R.; Keith, Darryl J.

doi:10.1006/ecss.1999.0516

Cited by 92 publications

(52 citation statements)

References 33 publications

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“…The information on partitioning of pollutants is quite necessary for pollution control and quality criteria as partitioning can control the fate and distribution of pollutants in the environment [24][25][26]. In this study, the octanol/water partition coefficients (K ow ) can be used for predicting the environmental fate of PAHs.…”

Section: Partitioning Pahs In a Sediment-water Systemmentioning

confidence: 99%

Assessing 16 Polycyclic Aromatic Hydrocarbons (PAHs) in River Basin Water and Sediment Regarding Spatial-Temporal Distribution, Partitioning, and Ecological Risks

Chen¹,

Sun²,

Zhang³

et al. 2018

Pol. J. Environ. Stud.

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This work investigated the distribution, partitioning, and ecological risks of 16 polycyclic aromatic hydrocarbons (PAHs) in water and sediment of the Yinma River Basin in China in normal, wet, and dry seasons. Sixteen PAHs were analyzed in 17 paired sets of water and sediment samples collected from the study area. The concentrations of PAHs in water and sediment showed spatial-temporal variations, the concentrations in water ranged from 167.6 to 373.9 ng/L with a mean value of 227.9 ng/L in the normal season, from 186.0 to 386.9 ng/L with a mean value of 281.6 ng/L in the wet season, and ranged from 147.0 to 315.9 ng/L with an average value of 218.6 ng/L in the dry season, while concentrations in sediment varied from 895.6 to 2,518.2 ng/g with a mean value of 1,739.4 ng/g in the normal season, from 1,233.0 to 4,763.0 ng/g with a mean value of 2,122.6 ng/g in the wet season, and ranged from 914.2 to 5,678.5 ng/g with an average value of 1,943.7 ng/g in the dry season. Partitioning of PAHs in water and sediment was studied and the result showed that PAHs tend to absorb in sediment. Ecological risk assessments were conducted based on the species-sensitivity distribution (SSD) model, with results suggesting that ecological risks of individual PAHs in water and sediment were little, and the multiple congeners of PAHs in sediment from some sampling sites had ecological risks. Primary sources of 16 PAHs in water and sediment were identified with isomer ratios, and results indicated that primary sources of PAHs in water were identified as a mixture pattern of petroleum and combustion sources, and in sediment were identified as a mixture pattern of petroleum and grass, wood and coal combustion sources.

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Section: Partitioning Pahs In a Sediment-water Systemmentioning

confidence: 99%

Assessing 16 Polycyclic Aromatic Hydrocarbons (PAHs) in River Basin Water and Sediment Regarding Spatial-Temporal Distribution, Partitioning, and Ecological Risks

Chen¹,

Sun²,

Zhang³

et al. 2018

Pol. J. Environ. Stud.

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“…A common method for the remediation of contaminated sediment is removal by dredging. Previous work has suggested that migration and increased bioavailability of contaminants may occur as a result of such disturbance (Rice and White, 1987;Latimer et al, 1999). In SOP, wetlands designed to intercept urban contaminated sediments (by settlement in ponded areas) may require future alterations to deal with reductions in stream/pond depth.…”

Section: Study Sitesmentioning

confidence: 99%

Bioactivity of POPs and their effects in mosquitofish in Sydney Olympic Park, Australia

Rawson

Tremblay

Warne

et al. 2009

Science of The Total Environment

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a b s t r a c tThe site of the 2000 Olympic Games (Sydney Olympic Park (SOP), Sydney, Australia) was contaminated by persistent organic pollutants (POPs) prior to remediation in the 1990s. This study investigates the bioactivity of POPs in the sediment and water of wetlands across SOP by in vitro 2,3,7,8-TCDD equivalence (TCDDeq) measurement (H4IIE cell line bioassay). Further, it examines whether disturbance of these sediments is likely to mobilise ligands for this receptor into the water column. Exposure to aryl hydrocarbon receptor (AhR) ligands was measured in vivo using hepatic cytochrome P4501A (CYP1A) induction (EROD) in the mosquitofish (Gambusia holbrooki). Aqueous TCDDeq ranged from 0.013 to 0.057 pM in SOP wetlands which was significantly (p b 0.05) less that in urban reference sites. These concentrations were not correlated to physical or chemical characteristics of the wetlands. In the sediments, TCDDeq ranged from 0.0016 to 7.06 µg/kg and these were not significantly (p ≥ 0.05) different to that measured in urban reference sites. Simulated disturbance of small quantities of sediment in water samples significantly (p b 0.05) increased the levels of TCDDeq measured in the water. Sediment TCDDeq was correlated to sediment ΣPAH concentration in 2006 and sediment ΣPCB, ΣDDT concentrations and fine sediment grain size in 2005. While fish at one SOP wetland had hepatic EROD activity elevated above the estimated basal level for this species, these were at the lower end of the range measured in urban impacted, non-remediated wetlands. EROD activity was positively correlated with both the sediment ΣPCB load and aqueous TCDDeq. Increased catchment size was correlated with increased EROD activity suggesting an even spread of POPs throughout the residential areas of the Sydney metropolitan area. The concentration of bioactive POPs in the wetlands of SOP is therefore low relative to urban reference sites demonstrating the ongoing success of the remediation program..

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“…The reduced functional diversity in the present study might reflect the dumping process and the hydrographical regime at the dumping site. During the dumping process, the sediment body separates according to respective grain sizes: Coarse sand fractions (including attached bacterial biomass and certain pollutants (e.g., high molecular PAHs)) (Latimer et al, 1999) immediately sink, while fine-grain fractions and attached nutrients and pollutants (such as heavy metals) can be transported through currents for up to 8 km before settling on the seafloor (HPA, 2005). Thus, consistent with the HPA, the deposit at the dumping centre predominately comprises sandy sediments (grain size analyses) and is relatively poor in sulphur, nitrogen, carbon and phosphorus and heavy metals (HPA, 2009).…”

Section: Discussionmentioning

confidence: 99%

Geo-Chip analysis reveals reduced functional diversity of the bacterial community at a dumping site for dredged Elbe sediment

Störmer

Wichels

Gerdts

2013

Marine Pollution Bulletin

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a b s t r a c tThe dumping of dredged sediments represents a major stressor for coastal ecosystems. The impact on the ecosystem function is determined by its complexity not easy to assess. In the present study, we evaluated the potential of bacterial community analyses to act as ecological indicators in environmental monitoring programmes. We investigated the functional structure of bacterial communities, applying functional gene arrays (GeoChip 4.2). The relationship between functional genes and environmental factors was analysed using distance-based multivariate multiple regression. Apparently, both the function and structure of the bacterial communities are impacted by dumping activities. The bacterial community at the dumping centre displayed a significant reduction of its entire functional diversity compared with that found at a reference site. DDX compounds separated bacterial communities of the dumping site from those of un-impacted sites. Thus, bacterial community analyses show great potential as ecological indicators in environmental monitoring.

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Mobilization of PAHs and PCBs from In-Place Contaminated Marine Sediments During Simulated Resuspension Events

Cited by 92 publications

References 33 publications

Assessing 16 Polycyclic Aromatic Hydrocarbons (PAHs) in River Basin Water and Sediment Regarding Spatial-Temporal Distribution, Partitioning, and Ecological Risks

Assessing 16 Polycyclic Aromatic Hydrocarbons (PAHs) in River Basin Water and Sediment Regarding Spatial-Temporal Distribution, Partitioning, and Ecological Risks

Bioactivity of POPs and their effects in mosquitofish in Sydney Olympic Park, Australia

Geo-Chip analysis reveals reduced functional diversity of the bacterial community at a dumping site for dredged Elbe sediment

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