Distribution and behaviour of polycyclic aromatic hydrocarbons in subtropical river estuary, Okinawa, Japan

Shilla, Daniel Abel

doi:10.1080/02757540.2016.1152945

Cited by 3 publications

(6 citation statements)

References 49 publications

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“…These PAHs did not have a trend, and they were often below the detection limit (Table 1). If we exclude the third group of PAHs as indicated in Figure 2B, similar trend and PAH groupings have been reported in other estuaries (e.g., Yong and Carniglie, 1995;Countway et al, 2003;Ranjan et al, 2012;Shilla, 2016). The LMW PAHs (particularly phenathrene) were abundant in SPM samples, ranging from 32.6 to 59.5%.…”

Section: Concentrations Behavior and Distribution Of Spm And Sedimensupporting

confidence: 78%

“…The high proportion of LMW PAHs in SPM suggests adsorption to SPM and less sequestration of these PAHs to bottom sediments. On the other hand, HMW PAHs are largely sequestrated and deposited on bottom sediments, and this has been reported in other studies also (Brion and Pelletier, 2005;Shilla, 2016).…”

Section: Concentrations Behavior and Distribution Of Spm And Sedimensupporting

confidence: 68%

“…The strong relationship between biomarkers for autochthonous particulate organic matter and group I PAHs could result from the growing pool of phytoplankton available for preferential partitioning of volatile PAHs. Comparable observations have been made for PAHs in the York River estuary (Countway et al, 2003), Manko estuary in Okinawa (Shilla, 2016), and PCBs in lakes located in northwestern Ontario (Dachs et al, 1999).…”

Section: Concentrations Behavior and Distribution Of Spm And Sedimenmentioning

confidence: 96%

“…The relationship between PAH and POC is presented in Table 4. POC content is one of the important factors that controls the concentration, transport and fate of PAHs in aquatic environment (Zhou et al, 1998;Countway et al, 2003;Shilla, 2016). Sorption of organic compounds is dominated by hydrophobic interactions and organic matter is one of the primary surfaces for sorption in aquatic environments (Zhou et al, 1998).…”

Section: Concentrations Behavior and Distribution Of Spm And Sedimenmentioning

confidence: 99%

“…Therefore, it is important to understanding the processes which govern the behavior of these contaminants in aquatic systems to establish their potential toxic effects on water and biota. Previous studies have indicated that the pathways and fate of PAHs were largely determined by the behavior and dynamics of particulate matter in estuarine systems (McGroddy and Farrington, 1995;McGroddy et al, 1996;Countway et al, 2003;Shilla, 2016). A notable exception is the behavior of LMW PAHs, which are more susceptible to microbial degradation and volatilization (Readman et al, 1982;van Zoest and van Eck, 1990).…”

Section: Introductionmentioning

confidence: 99%

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Distribution, Behavior, and Sources of Polycyclic Aromatic Hydrocarbon in the Water Column, Sediments and Biota of the Rufiji Estuary, Tanzania

Shilla

Routh

2018

Front. Earth Sci.

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To establish the environmental status of Rufiji coastal waters in Tanzania, it is necessary to document the different contaminants as major entry points into the lower estuarine areas. Because there is no data on polycyclic aromatic hydrocarbon (PAH) contamination in this estuarine delta, the current study measured the concentrations of 19 PAHs in suspended particulate matter (SPM), surface sediments and marine organisms that are part of a telescoping food chain (gastropod Terebralia sp., clams Crassostrea cucullata, crabs Uca sp., panaeid shrimps Panaeus monodon, teleost Hilsa kelee, Trichiurus lepturus, and Arius thalassinus). Total PAH concentrations in SPM were low to moderate (18.7-223 ng/g) and varied between the sites; phenanthrene and chrysene were the dominant PAHs (2.40-47.2 and 4.20-28.1 ng/g, respectively). Significant variation between the sites indicates the influence of fuel spills and contribution from terrestrial sources resulting from different land use practices, such as agriculture, fishing, and harvesting firewood, charcoal, and mangroves poles. PAH concentrations in surface sediments were higher (127-376 ng/g) than SPM samples, and high molecular weight PAHs were the dominant fraction. Animal tissues indicated low PAH levels (9.20-158 ng/g). Only low molecular weight PAHs were dominant in the muscle tissues of pelagic and filter feeders (C. cucullata, P. monodon, and H. kelee). Bioaccumulation factor (BAF) ranged between 0.20 and 69.5 and it suggests 1) PAH accumulation in the marine organisms has so far been limited, and 2) distribution of PAHs in the Rufiji estuary poses limited risks.

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Section: Concentrations Behavior and Distribution Of Spm And Sedimensupporting

confidence: 78%

Section: Concentrations Behavior and Distribution Of Spm And Sedimensupporting

confidence: 68%

Section: Concentrations Behavior and Distribution Of Spm And Sedimenmentioning

confidence: 96%

Section: Concentrations Behavior and Distribution Of Spm And Sedimenmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Distribution, Behavior, and Sources of Polycyclic Aromatic Hydrocarbon in the Water Column, Sediments and Biota of the Rufiji Estuary, Tanzania

Shilla

Routh

2018

Front. Earth Sci.

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Exploration of polycyclic aromatic hydrocarbon distribution in the sediments of marine environment by hydrodynamic simulation model

Zhang

Wang

et al. 2021

Marine Pollution Bulletin

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Polycyclic aromatic hydrocarbons: bioaccumulation in dragonfly nymphs (Anisoptera), and determination of alkylated forms in sediment for an improved environmental assessment

Girardin

Grung

Meland

2020

Sci Rep

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Road runoff carries a mixture of contaminants that threatens the quality of natural water bodies and the health of aquatic organisms. The use of sedimentation ponds is a nature-based solution for the treatment of road runoff. This study assessed the concentration of polycyclic aromatic hydrocarbons (PAHs) and their alkylated homologues in sediment from seven highway sedimentation ponds and three natural urban ponds. In addition, the study explored the bioaccumulation of PAHs in dragonfly nymphs (Anisoptera). Finally, biota-sediment accumulation factors (BSAFs) were estimated. The results revealed a significant difference in the concentrations of 16 priority PAHs in sediment, with overall higher levels in sedimentation ponds (2,911 µg/kg on average) compared to natural urban ponds (606 µg/kg on average). PAH levels increased substantially once alkylated homologues were considered, with alkylated comprising between 42 and 87% of the total PAH in sediment samples. these results demonstrate the importance of alkylated forms in the environmental assessment of PAHs. The bioaccumulation assessment indicates that dragonfly nymphs bioaccumulate PAHs to a certain degree. It is not clear, however, whether they metabolize PAHs. BSAF results ranged from approx. 0.006 to 10 and indicate that BSAFs can be a powerful tool to determine the functionality of sedimentation ponds. During traffic-related activities, a complex mixture of inorganic and organic contaminants is released into the environment. Some of these contaminants remain in the air or settle on the ground, being eventually washed off by rain 1,2. Road runoff and tunnel wash water, enriched with contaminants, can eventually reach natural water bodies, threatening the water quality, and the health of all organisms dependent directly or indirectly on these systems. Among many traffic-related contaminants, polycyclic aromatic hydrocarbons (PAHs) are probably the most studied group of organic contaminants. Tire and asphalt wear, and incomplete combustion of fuel are the main sources of PAHs from traffic 3. PAHs are found in complex mixtures, with those of pyrogenic origin (from incomplete combustion) being mainly parent PAHs (without alkyl groups, heteroatoms or hydroxides), whereas those of petrogenic origin (from petroleum derivate) are associated with high levels of alkylated forms 4. Several PAHs and their metabolites are known to be potentially carcinogenic and mutagenic 5-7 , and some exhibit photo-induced toxicity 8,9. Consequently, several PAHs have been added to the list of substances of concern in environmental risk assessment and monitoring. A list of 16 parent PAHs issued by the U.S. Environmental Protection Agency (EPA) in the 1970s, and referred in this study as PAH-16, is often used as a standard set of PAHs for environmental analysis 10. A more recent study has, however, recommended a list of 40 PAHs when

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Distribution and behaviour of polycyclic aromatic hydrocarbons in subtropical river estuary, Okinawa, Japan

Cited by 3 publications

References 49 publications

Distribution, Behavior, and Sources of Polycyclic Aromatic Hydrocarbon in the Water Column, Sediments and Biota of the Rufiji Estuary, Tanzania

Distribution, Behavior, and Sources of Polycyclic Aromatic Hydrocarbon in the Water Column, Sediments and Biota of the Rufiji Estuary, Tanzania

Exploration of polycyclic aromatic hydrocarbon distribution in the sediments of marine environment by hydrodynamic simulation model

Polycyclic aromatic hydrocarbons: bioaccumulation in dragonfly nymphs (Anisoptera), and determination of alkylated forms in sediment for an improved environmental assessment

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