Role of suspended sediments on the distribution of PCB in the Seine Estuary (France)

Abarnou, Alain; Avoine, Jacques; Dupont, Jean-Paul; Lafite, Robert; Simon, Serge

doi:10.1016/0278-4343(87)90038-0

Cited by 30 publications

(13 citation statements)

References 8 publications

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“…This may be responsible for transport of fluvial solids to the estuaries mainly in wet season during periods of high flows and contributed to re-suspension of crude oil to the surface. This is congruent with the submission of Abarnou et al, [18] which contends that suspended particulate matter is normally responsible for the transport and distribution of hydrophobic contaminants in the aquatic environment.…”

Section: Discussionsupporting

confidence: 90%

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Heavy Metal Concnetrations in Sediment and Periwinkle -Tympanotonus fuscastus in the Different Ecological Zones of Bonny River System, Niger Delta, Nigeria

Chindah¹,

Braide²,

Amakiri³

et al. 2009

TOEPTJ

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Studies of total hydrocarbon concentrations (THC) and heavy metals was conducted at the Bonny /New Calabar River in order to determine the level of these contaminants (from municipal and industrial sources) on sediment and important biological organism in the environment in September 2000 for wet and January 2001 for dry seasons. The study area is within the eastern arm of the Niger Delta located between longitude 40 25" to 40 40" N and latitude 70 25" to 70 15" E. In the 3 ecological areas studied, the distribution of THC was found to be higher in dry season (411.53 ± 118.77 mg/l than wet (400 ± 375.50 mg/l). Similarly differences were found in the heavy metals distribution in the river system. The magnitude was in the decreasing order of Zn > Cu > Pb > V>Cd>Cr>Cd respectively. This pattern was consistent for all the ecological zones. Bioaccumulation studies also showed that the Tympanotonus fuscatus tissue had more THC and metal contaminants than the sediment. Although the heavy metal values obtained were less than the regulatory standards, the continued accumulation of the contaminants is a cause for concern. THC in both sediment and tissue are high enough to affect the quality of the organism for human consumption.

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Section: Discussionsupporting

confidence: 90%

“…The middle reach stations [18][19][20][21] lie within the mesopolyhaline limit with several activities especially from municipal and industrial discharges from Port Harcourt Refinery and related activities. The vegetation is predominantly mangrove especially R. racimosa, R. mangle, Avicennia africana, Laguncularia.racemosa [8].…”

Section: Study Areamentioning

confidence: 99%

Heavy Metal Concnetrations in Sediment and Periwinkle -Tympanotonus fuscastus in the Different Ecological Zones of Bonny River System, Niger Delta, Nigeria

Chindah¹,

Braide²,

Amakiri³

et al. 2009

TOEPTJ

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“…Moreover, relationships between total loads of suspended sediment and mean PCB concentrations have been reported. 19 This may suggest differences in the distribution of sediment grain size.…”

Section: Discussionmentioning

confidence: 99%

Concentration and Distribution of Organochlorine Pesticides in Sediments of the Niger River, Nigeria

Unyimadu

Osibanjo

Babayemi

2019

Journal of Health and Pollution

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ResearchBackground. Pollution in aquatic ecosystems is a serious environmental concern. There is a great need for constant assessment and monitoring of hazardous substances, particularly in aquatic environments in developing countries, as rivers are media with easy trans-boundary transport of chemical substances. Objectives. The present study assessed the occurrence and distribution of organochlorine pesticides (OCPs) in the sediments of the Niger River, Nigeria. Methods. A total of 120 samples of sediment were collected from 15 locations along the river using Van Veen grab. The Environmental Protection Agency (USEPA) 3570 method with slight modification was used for sample preparation. Organochlorine pesticides were analyzed using Hewlett Packard 5890 series II gas chromatography with electron capture detector. Confirmation of OCPs was performed using a gas chromatograph/mass spectrometer (Shimadzu QP2010) and capillary column type HP1MS (30 m x 0.25 um x 0.25 mm id). Results. The highest concentration of ∑OCPs in the sediment samples of the River Niger (5023±1596 µg/kg, 4672-7009 µg/kg) was detected in a location at Onitsha, while the lowest concentration (1570±204.5, 1214-1820 µg/kg) was detected in a location at the Nicolas River. Discussion. High values of ∑OCPs (>2000 µg/kg) were detected in all of the locations except in three locations where lower levels were detected. The ∑OCPs were higher during the dry season compared to the rainy season. This may be because the resident time of the sediment transported was higher during the dry season compared to the rainy season, which is characterized by storms, high current, and bottom scour. The chlordane concentration ranged between 24.4 and 134.1 μg/kg dry weight (dw) in locations Nicolas 14 and Lokoja 5; and the Probable Effect Concentration guidelines were exceeded. Dieldrin was detected at very low levels in most of the locations and ranged from 5.67 to 70.3 μg/kg dw in locations Onitsha 9 and 8; and the Probable Effect Concentration guideline was only exceeded in location Onitsha 8; however, the Toxic Effect Concentration guideline was exceeded at all of the locations. Dichlorodiphenyldichloroethane (DDD) was not detected in location Lokoja 6 or 7, and Onitsha 8 and 9, although the concentration in all other locations exceeded the guidelines. Dichlorodiphenyldichloroethylene (DDE) concentrations exceeded the guidelines except in location Nicolas 13. Conclusions. Due to the environmental/human risk and potential danger of the elevated levels of OCPs, there is a need for continuous monitoring of the Niger River. Competing Interests. The authors declare no competing financial interests.

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“…These sites are located near estuaries of three large rivers, the Seine, the Somme, and the Loire, respectively, that flow through the highly urbanized and intensely industrialized areas of central and northern France. The Seine has been designated the most polluted river in France in large-scale biomonitoring programs of the French coast (Abarnou et al, 1987;Marchand et al, 1989) and even on the scale of the European continent (Duinker and Hillebrand, 1979;Thomas et al, 1984;Pavoni et al, 1987).…”

Section: Spatial Variability Of Concentrations Of Analyzed Pcbs and Pahsmentioning

confidence: 99%

Comparison of PCBs and PAHs levels in European coastal waters using mussels from the Mytilus edulis complex as biomonitors

et al. 2015

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Please cite this article in press as: Olenycz, M., et al., Comparison of PCBs and PAHs levels in European coastal waters using mussels from the Mytilus edulis complex as biomonitors. Oceanologia (2015), http://dx.Summary Mussels from the Mytilus edulis complex were used as biomonitors for two groups of organic pollutants: polychlorinated biphenyls (PCBs, congeners: 28, 52, 101, 118, 138, 153 and 180) and polycyclic aromatic hydrocarbons (

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Role of suspended sediments on the distribution of PCB in the Seine Estuary (France)

Cited by 30 publications

References 8 publications

Heavy Metal Concnetrations in Sediment and Periwinkle -Tympanotonus fuscastus in the Different Ecological Zones of Bonny River System, Niger Delta, Nigeria

Heavy Metal Concnetrations in Sediment and Periwinkle -Tympanotonus fuscastus in the Different Ecological Zones of Bonny River System, Niger Delta, Nigeria

Concentration and Distribution of Organochlorine Pesticides in Sediments of the Niger River, Nigeria

Comparison of PCBs and PAHs levels in European coastal waters using mussels from the Mytilus edulis complex as biomonitors

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