Distribution of Trace Metals in the Pacific Oyster, Crassostrea gigas, and Crabs from the East Coast of Kyushu Island, Japan

Szefer, Piotr; Ikuta, Kunio; Kushiyama, S.; Frelek, K.; Gel̵don, J.

doi:10.1007/s001289900307

Cited by 24 publications

(11 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The occurrence of enhanced levels of trace metals and hydrocarbons especially in sediments can be a good indication of anthropogenic sources of pollution (Davies et al 1991;Binning and Baird 2001). Toxic trace metals and hydrocarbons can be bioconcentrated in seafoods, especially in shellfishes, such as mussels, oysters and cockles to levels in excess of public health standards, thus presenting a health hazard to those eating them (Clark et al 1997;Magliette et al 1995;Szefer et al 1997;Eja et al 2003;Han et al 1994).…”

Section: Introductionmentioning

confidence: 97%

Petroleum hydrocarbons and limiting nutrients in Macura reptantia, Procambarus clarkii and benthic sediment from Qua Iboe Estuary, Nigeria

et al. 2007

View full text Add to dashboard Cite

The levels of total petroleum hydrocarbons in two commonly consumed benthopelagic shellfishes, Macura reptantia and Procambarus clarkii, harvested from benthic sediment of Qua Iboe Estuary were determined using a gas chromatography with flame-ionization detector. Seventy-two (72) samples each of benthic sediment and the shellfishes were collected monthly between June 2003 and February 2004 covering the peak periods of the wet and dry seasons. Concentrations of hydrocarbons were highly variable and ranged between 5.00 and 232.00 lg/g dry weight of benthic sediment, 3.05 and 11.30 lg/g dry weight of M. reptantia, 1.62 and 9.00 lg/g dry weight of P. clarkii. Pearson's correlation analysis of total hydrocarbon concentrations in subtidal sediments with levels in the fauna species yielded positive significant (P \ 0.05) correlations in M. reptantia (r = 0.737) and P. clarkii (r = 0.924). This is indicative of a long term and chronic accumulation of hydrocarbons in the estuarine ecosystem, reflecting the potential for exposure of the resident biota and the risk to human health.

show abstract

Section: Introductionmentioning

confidence: 97%

Petroleum hydrocarbons and limiting nutrients in Macura reptantia, Procambarus clarkii and benthic sediment from Qua Iboe Estuary, Nigeria

et al. 2007

View full text Add to dashboard Cite

show abstract

“…In most cases, the concentration of trace metals in intertidal and subtidal sediments has been found to exceed their levels in the water column (Horowitz 1991) therefore prompting studies that are focused on the latter as well as sediment. Also, there has been a considerable interest in evaluating heavy metal load in aquatic organisms (Szefer et al 1997;Ramos et al 1999;Rashed 2001).…”

Section: Introductionmentioning

confidence: 98%

Metal contamination of surface water, sediment and Tympanotonus fuscatus var. radula of Iko River and environmental impact due to Utapete gas flare station, Nigeria

Benson

Etesin

2007

Environmentalist

View full text Add to dashboard Cite

Inter-seasonal studies on the trace metal load of surface water, sediment and Tympanotonus fuscatus var. radula of Iko River were conducted between 2003 and 2004. The impact of anthropogenic activities especially industrial effluent, petroleum related wastes, gas flare and episodic oil spills on the ecosystem are remarkable. Trace metals analyzed included cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), lead (Pb), manganese (Mn), nickel (Ni), vanadium (V) and zinc (Zn). Sediment particle size analysis revealed that they were characteristically psammitic and were predominantly of medium to fine grained sand ([73%), less of silt (\15%) and clay (\10%). These results correlated with low levels of trace elements such as Pb (0.03 AE 0.02 mg kg À1 ), Cr (0.22 AE 0.12 mg kg À1 ), Cd (0.05 AE 0.03 mg kg À1 ), Cu (0.04 AE 0.02 mg kg À1 ) and Mn (0.23 AE 0.22 mg kg À1 ) in the sediment samples. This observation is consistent with the scarcity of clayey materials known to be good scavengers for metallic and organic contaminants. Sediments indicated enhanced concentration of Fe, Ni and V, while other metal levels were relatively low. The concentrations of all the metals except Pb in surface water were within the permissible levels, suggesting that the petroleum contaminants had minimal effect on the state of pollution by trace metals in Iko River. Notably, the pollutant concentrations in the sediments were markedly higher than the corresponding concentrations in surface water and T. fuscatus tissues, and decreased with distance from point sources of pollution.

show abstract

“…However, Hg, Cd and As were not detected. The detection of significant heavy metal concentrations in both water and faunal muscles demonstrate the presence of large concentrations of heavy metal pollutants in the environment with great potential for bioaccumulation in the food chain [2].…”

Section: Resultsmentioning

confidence: 99%

“…Both solid and liquid wastes contain heavy metals that are harmful to both flora and fauna inhabiting the habitat [1]. The pollution effects are further aggregated by poor disposal systems that result in their bioaccumulation in the food chain [2]. Presence or absence as well as surveyed number of particular organisms can act as indicators of pollution levels.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Heavy Metal Bioaccumulation as Indicators of Environmental Pollution and Health Risks

Matoka¹,

Omolo²,

Odalo³

2014

IOSRJESTFT

View full text Add to dashboard Cite

Distribution of Trace Metals in the Pacific Oyster, Crassostrea gigas, and Crabs from the East Coast of Kyushu Island, Japan

Cited by 24 publications

References 9 publications

Petroleum hydrocarbons and limiting nutrients in Macura reptantia, Procambarus clarkii and benthic sediment from Qua Iboe Estuary, Nigeria

Petroleum hydrocarbons and limiting nutrients in Macura reptantia, Procambarus clarkii and benthic sediment from Qua Iboe Estuary, Nigeria

Metal contamination of surface water, sediment and Tympanotonus fuscatus var. radula of Iko River and environmental impact due to Utapete gas flare station, Nigeria

Heavy Metal Bioaccumulation as Indicators of Environmental Pollution and Health Risks

Contact Info

Product

Resources

About