The partition of fluoranthene and pyrene between suspended particles and dissolved phase in the Humber Estuary: a study of the controlling factors

Zhou, Junliang; Fileman, T.W.; Evans, Sheila V.; Донкин, П.; Readman, James W.; Mantoura, R.F.C.; Rowland, Steve

doi:10.1016/s0048-9697(99)00404-0

Cited by 100 publications

(61 citation statements)

References 22 publications

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“…Many laboratory-derived studies showed that the partition coefficient for hydrophobic contaminants tends to be closely correlated to their octanol/water partition coefficients (K ow ) (Baker et al 2000, Chiou et al 1998). In general, there is a reversible adsorption/desorption process for fresh spiked PAHs, while PAHs derived from combustion sources tend to bind strongly to soot particles in natural sediment (Readman et al 1987, Zhou et al 1999. Consequentially, K oc values observed in the natural environment could be orders of magnitude higher than those predicted by linear correlation relationships under laboratory conditions.…”

Section: Discussionmentioning

confidence: 94%

Partitioning characteristics of PAHs between sediment and water in a shallow lake

2007

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tory conditions, suggesting that the measured pore water PAH concentrations were lower than those predicted. That is to say, not all the sediment PAHs can be available to partition rapidly into sediment pore waters. A variation in soot content is a possible reason. Furthermore, concentrations of PAHs on SPM were higher than those in sediments. The compositions of PAHs on SPM and in sediments were similar, indicating the importance of re-suspension process of sediments in the partitioning process of the shallow lake. Conclusions. The results indicated the equilibrium partitioning model could be used to predict PAHs distribution in various phases of a shallow lake in the stagnation period, but re-suspension processes should be considered to modify the relationship between log K oc s and log K ow s. Recommendations and Perspectives. Concentration, particle size and composition of resuspended particles could affect the relationship between log K oc s and log K ow s. Further work should be done under field conditions, especially where a steady thermodynamic equilibrium state could be assumed.Keywords: Aquatic ecosystems; China; freshwater lake; K ow ; PAHs; partitioning; polycyclic aromatic hydrocarbons; shallow lake; SPM; surface sediments; suspended particulate matter; Taihu Lake; water quality AbstractGoal, Scope and Background. Distribution of hydrophobic organic contaminants in abiotic compartments is essential for describing their transfer and fate in aquatic ecosystems. Taihu Lake is the third largest freshwater lake in China. Water quality of Taihu Lake has deteriorated greatly during the last decades and has threatened the water supply. The aim of the present study was to investigate the partitioning of polycyclic aromatic hydrocarbons (PAHs) among overlying water, suspended particulate matter (SPM), sediments, and pore water in Meiliang Bay, Taihu Lake and to provide useful information for the ecological engineering in this area. Materials and Methods. Overlying water and surface sediment were sampled from six sites in Meiliang Bay, Taihu Lake, China. Within 72 h of sampling, sediments were centrifuged to obtain the pore water. Overlying water samples were filtered to separate dissolved and SPM samples. After extraction, samples were purified following a clean-up procedure. PAH fraction was obtained by elution with a mixture of hexane: DCM (7:3, V/V) and analyzed by GC/MS. Results. PAHs concentrations in overlying water varied from 37.5 ng/L to 183.5 ng/L. Concentrations of PAHs in pore water were higher than those in overlying water. The total concentrations of 16 priority PAHs in sediments ranged from 2091.8 ng/ g-dw to 4094.4 ng/g-dw. PAHs concentrations on SPM were decreased with suspended solid concentrations (SSC). Total PAHs concentrations on SPM varied in the range of 3369.6 ng/g-dw to 7531.1 ng/g-dw. The partition coefficients between sediment and overlying water (log K oc ) for PAHs with log K ow <5 were positively correlated with their octanol-water partition coefficients (log K ow ) (n=39, r=0....

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Section: Discussionmentioning

confidence: 94%

Partitioning characteristics of PAHs between sediment and water in a shallow lake

2007

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“…The possible reasons may be the salinity or composition of heterogeneous nature of the SPM (such as different soot fractions and different particle sizes, etc.) changed in the water body (Means, 1995;Zhou et al, 1999). Such environmental condition might give different influence to the distribution of HCHs and DDTs in DP and SPM in the water.…”

Section: Ocps In Surface Water Of the Jinjiang Rivermentioning

confidence: 99%

Organochlorine pesticides in soil, water and sediment along the Jinjiang River mainstream to Quanzhou Bay, southeast China

Yang

Zhang

et al. 2013

Ecotoxicology and Environmental Safety

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“…This group usually originated from road paving asphalt, crude oil, bitumen (Ahrens and Depree, 2010) and road dust (Larsen and Baker, 2003). The last group comprises Pyr, Fluo and Phe, which are the anthropogenic PAHs from the using of petroleum products (Zhou et al, 1999).…”

Section: Source Estimation From Hcamentioning

confidence: 99%

Using Polycyclic Aromatic Hydrocarbons (PAHs) as a chemical proxy to indicate Tsunami 2004 backwash in Khao Lak coastal area, Thailand

Tipmanee

Deelaman

Pongpiachan

et al. 2012

Nat. Hazards Earth Syst. Sci.

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Abstract. In this study, we attempted to use PAHs as a chemical proxy to trace the transport of land-derived materials caused by the tsunami backwash to better understand how it may have affected the distribution of sedimentary deposition throughout the seabed of Khao Lak coastal areas. By analyzing the compositions of sedimentary PAHs in combination with application of the multivariate descriptive statistical techniques, PAHs were proven to be a promising chemical proxy to indicate the tsunami backwash in the study area. Their spatial distribution could indicate that the tsunami backwash plays an important role in transporting anthropogenic PAHs to the nearby coastal area as far as approximately 25 km from the shoreline. In addition, the results from diagnostic PAH isomer ratios suggested that road paving asphalt, originated from heavy erosion by the tsunami wave in front of Pakarang Cape, was among the identified sources of PAHs. Principle Component Analysis (PCA) results provided 2 estimated land-derived sources of PAHs, which were the road dust and oil burning sources. These estimated signature sources clearly support our hypothesis that PAHs were transported from the potential sources on land and deposited into the near-shore seabed during tsunami backwash.

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The partition of fluoranthene and pyrene between suspended particles and dissolved phase in the Humber Estuary: a study of the controlling factors

Cited by 100 publications

References 22 publications

Partitioning characteristics of PAHs between sediment and water in a shallow lake

Partitioning characteristics of PAHs between sediment and water in a shallow lake

Organochlorine pesticides in soil, water and sediment along the Jinjiang River mainstream to Quanzhou Bay, southeast China

Using Polycyclic Aromatic Hydrocarbons (PAHs) as a chemical proxy to indicate Tsunami 2004 backwash in Khao Lak coastal area, Thailand

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