Characterization of sediments from copenhagen harbour by use of biotests

Pedersen, Finn; Bjørnestad, Estelle; Andersen, Helle Vang; Kjølholt, Jesper; Poll, Christian

doi:10.1016/s0273-1223(98)00203-0

Cited by 79 publications

(2 citation statements)

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“…In the present study, we carried out physicochemical characterization of the epipelic and benthic sediments of Cross River Estuary mangrove ecosystem, namely pH, clay, silt, sand, total organic carbon (TOC), nutritive salts, total organic nitrogen (TON), exchangeable cations, and we examined the distribution of heavy metals such as Pb, Cr, Cu, Zn, Fe, Ni, and V in the epipelic and benthic sediments in both wet and dry seasons. Our assessment of sediment contamination was based on (1) sediment quality guidelines (SQGs) used by US EPA (2) degree of contamination using the enrichment factor, the geo-accumulation index (I geo ) and the pollution load index (PLI); and (3) applications of two sets of guidelines: ERL/ERM and TEL/PEL and mean toxic units (Aloupi and Angelidis 2001;Woitke et al 2003;Reddy et al 2004;Selvaraj et al 2004;MacDonald et al 2000;Perin et al 1997;Pedersen et al 1998;Tomllinson et al 1980). A statistical correlation analysis between sediment metal concentrations was also performed to determine the possible anthropogenic sources of the heavy metal concentrations in the Cross River sediments.…”

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Distribution, Seasonal Variations and Ecotoxicological Significance of Heavy Metals in Sediments of Cross River Estuary Mangrove Swamp

Essien

Antai

Olajire

2008

Water Air Soil Pollut

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The concentrations and distribution of selected heavy metals in epipelic and benthic sediments of Cross River Estuary mangrove swamp were studied to determine the extent of anthropogenic inputs from industrial activities and to estimate the effects of seasonal variations on geochemical processes in this tropical estuarine ecosystem. The analysis shows that the mean concentrations (mg/kg, dw) of Cu, Cr, Fe, Ni, Pb, V and Zn vary from 24. 1-32.4, 19.9-27.4, 666.7-943.5, 15.2-30.3, 8.8-24.7, 2.2-6.9 and 140.1-188.9, respectively. An important observation is that, in general, lowest metal concentrations are found during the dry season, compared to wet season. Pollution load index (PLI) and index of geoaccumulation (I geo ) revealed overall low values but the enrichment factors (EFs) for Cr, Zn, and V were high, and this reflects the intensity of anthropogenic inputs related to industrial discharge into the estuary. The mean concentrations of Zn, Cu and to some extent Ni exceeded the Effects Range-Low (ERL) and Threshold Effect Level (TEL) values in majority of the samples studied, indicating that there may be some ecotoxicological risk to organisms living in these sediments. The inter-element relationship revealed the identical source of elements in the sediments of the studied area. The concentration of heavy metals reported in this work will be useful as baselines for comparison in future sediment quality studies.

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Distribution, Seasonal Variations and Ecotoxicological Significance of Heavy Metals in Sediments of Cross River Estuary Mangrove Swamp

Essien

Antai

Olajire

2008

Water Air Soil Pollut

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“…The ecotoxicological sense of heavy metal contamination in sediments was determined using sediment quality guidelines developed for marine and estuarine ecosystem [19]. The potential acute toxicity of contaminants in sediment sample can be estimated as the sum of the toxic units (∑TU) defined as the ratio of the determined concentration to PEL value [20]. Pollution will be measured as enrichment factor (EF), which is the amount or ratio of the sample metal enrichment above the concentration present in the reference station or material [21,22].…”

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Ecotoxicity and Ecosystem Health of a Ramsar Wetland System of India

Nasir¹,

Harikumar²

2011

JEP

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In this study one economically important Ramsar wetland system of India, Vembanad wetland system, is studied to determine the environmental pollution. Six surface sediment samples collected from two extreme zones of the wetland system were analyzed for heavy metals such as Copper, Zinc, Manganese, Cadmium, Lead, Nickel and Mercury. Highest metal concentration was found at industrial zone and lowest concentration was detected at southern upstream of the wetland system. The results showed that the pollution level is significant in the industrial zone. Comparison of the results with different sediment quality guidelines indicated ultra high degree of contamination in the industrial zone. The numerical value of degree of contamination, pollution load index, sum of toxic units, enrichment factor and geo-accumulation index confirmed the above fact. Based on National Oceanic and Atmospheric Administration guidelines, the health of the ecosystem was seriously impaired with frequent occurring of biological effects in the industrial zone. The percentage of heavy metal calculated with respect to the industrial zone as the base line and the correlation analysis with organic matter indicated that, mobility of the specific metal has higher impact on its concentration at the fresh water region of the wetland

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Toxicity Assessment by Microtox® in Sediments, Pore Waters and Sediment Saline Elutriates in the Gulf of Gdansk (Baltic Sea)

Łukawska‐Matuszewska

Burska

Niemirycz³

2009

CLEAN Soil Air Water

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The toxicity of sediments in the Gulf of Gdansk is analyzed in relation to the chemical composition of interstitial and near-bottom waters, and sediment properties. The toxicity of sediments, pore waters and saline elutriates is determined by using the Microtoxm test based on changes in light production of the luminescent bacteria Vibrio fischeri. The results indicate considerable toxicity in the majority of examined sediments. Since the sediment elutriates and pore waters are toxic in some cases, the total toxicity of the sediments is likely to be due to both sediment-bound and water soluble substances. The sediment toxicity is related to the percentage contribution of the fine fraction of sediments. A significant correlation between the toxicity of the sediments and the black carbon content implies anthropogenic contamination. The toxicity of the sediments is seen to increase with the increase of hydrogen sulfide concentration in pore waters. The ammonia in pore waters was found not to be responsible for the toxicity of the sediments.

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Characterization of sediments from copenhagen harbour by use of biotests

Cited by 79 publications

References 1 publication

Distribution, Seasonal Variations and Ecotoxicological Significance of Heavy Metals in Sediments of Cross River Estuary Mangrove Swamp

Distribution, Seasonal Variations and Ecotoxicological Significance of Heavy Metals in Sediments of Cross River Estuary Mangrove Swamp

Ecotoxicity and Ecosystem Health of a Ramsar Wetland System of India

Toxicity Assessment by Microtox® in Sediments, Pore Waters and Sediment Saline Elutriates in the Gulf of Gdansk (Baltic Sea)

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