A weak acid extraction method as a tool for the metal pollution assessment in surface sediments

Voutsinou-Taliadouri, Fanny

doi:10.1007/bf01244003

Cited by 22 publications

(9 citation statements)

References 5 publications

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“…Some important data of 'labile' metal fraction obtained by diluted HCl extraction procedure are available in the literature. The present data are comparable to or lower than those determined in other non-contaminated areas (Giordano et al, 1995;Angelidis & Aloupi, 1995;Voutsinou-Taliadouri, 1995), and approximately lower of one order of magnitude than those found in polluted areas (Chester & Voutsinou, 1981;Adami et al, 2000). …”

Section: Crsupporting

confidence: 67%

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Metal Pollution Assessment of Surface Sediments Along a New Gas Pipeline in the Niger Delta (Nigeria)

Adami

Cabras

Predonzani

et al. 2007

Environ Monit Assess

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Chromium, nickel, copper, zinc and cadmium were determined in sediments of the Niger Delta (Nigeria) in order to discriminate between natural metal sources and anthropogenic ones. Surface sediments were collected at seven sites along a new gas pipeline near Port Harcourt, between the New Calabar River and the Bonny River towards Bonny town. Chemical characterisation is obtained by hydrofluoric-nitric acid digestion procedure, providing the 'total' ('residual') metal contents. Information about the anthropogenic metal fraction was obtained by cold diluted hydrochloric acid extraction procedure. This 'labile' acid soluble fraction of metals, perhaps due to relatively recent inputs in the sediments, constitutes the fraction more likely to be available to marine organisms, and furnishes a first evaluation of the possible toxicity of sediments of this sensitive ecosystem. Zinc appears to be the most available of all the heavy metals: its 'labile' fraction attains 40-50% of the 'total' zinc in sediment. Sites near Port Harcourt city are the most contaminated. All the examined metals are one order of magnitude below the respective values proposed as a limit for toxicity and are comparable with those observed by other authors in similar Niger Delta areas. Some anomalous data found near Port Harcourt city suggest that zinc and cadmium are the metals that require further monitoring. Their anthropogenic source could be derived from urban and industrial sewage.

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Section: Crsupporting

confidence: 67%

“…-Greece(Voutsinou-Taliadouri, 1995) Polluted sediment of Thermaikos Gulf -Greece(Chester & Voutsinou, 1981) Data are reported as average or average±standard deviation. a Values not given in original text.…”

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confidence: 99%

Metal Pollution Assessment of Surface Sediments Along a New Gas Pipeline in the Niger Delta (Nigeria)

Adami

Cabras

Predonzani

et al. 2007

Environ Monit Assess

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“…The cold diluted hydrochloric acid leaching is a simple procedure, with a good "residual metal sensitivity/accuracy" trade-off; it is often reported in current literature (see e.g. Agemian and Chau, 1976;Chester and Voutsinou, 1981;Huerta-Diaz and Morse, 1990;Voutsinou-Taliadouri, 1995) thus permitting intercomparison of results. On the basis of these considerations, the cold diluted hydrochloric acid leaching technique has been selected for determining in sediments the metal fraction due to anthropogenic inputs.…”

Section: Introductionmentioning

confidence: 98%

An improved index for monitoring metal pollutants in surface sediments

Adami

Barbieri

Reisenhofer³

2000

Toxicological & Environmental Chemistry

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An approach for defining the quality of surface sediments of limited areas in terms of heavy metal contents is proposed. Sediments were taken on a bi-dimensional mapping, for checking possible different sources of pollution in the case study, a harbour zone. Non residual metals were determined by ICP-AES in cold diluted hydrochloric acid leachates of sediments. An "enrichment factor", r, can be computed for each metal: metals with r values exceeding unity can be considered as indicators of metal pollution. A "total enrichment factor", R, was proposed in order to assess the degree of pollution of sediments for each site. R is an adimensional value that accounts for the presence of metals that exceed threshold values determined by background concentrations.

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“…Prior to the leaching, coarser grains (gravels and coarse sand) were removed. For the trace metal extraction, 5 g of soil sample was mixed with 75 ml of 0.5 N HCl and placed in a mechanical shaker for 16 h (Agemian and Chau 1976;Taliadouri 1995;Janaki-Raman et al 2007). The final solution was filtered using Whatman Grade A filter papers.…”

Section: Chemical Analysismentioning

confidence: 99%

Evaluation of Acid Leachable Trace Metals in Soils Around a Five Centuries Old Mining District in Hidalgo, Central Mexico

Jonathan

Jayaprakash

Srinivasalu

et al. 2009

Water Air Soil Pollut

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We present the concentrations and distribution patterns of nine acid leachable trace metals (ALTMs) Fe, Mn, Cr, Cu, Ni, Co, Pb, Zn, and Cd in the soil samples from the five century old PachucaMineral de Monte mining district of the Central Mexico. The ALTMs do not show any significant correlation with pH, EC, CaCO 3 , and organic carbon. The metal concentration indicates three distinct distribution patterns. Fe, Mn, Cr, Pb, and Zn show enrichment in the high altitude region of the northern and central part of the study area. Likewise, Cu and Cd are enriched in the northern mountainous terrains. Both these groups show strong positive correlation with Mn indicating that they are associated with Mnbearing minerals. However, we relate the first group of metals to excessive vehicular transportation and second group to mining waste dumps. The third group of ALTMs Co and Ni indicates its direct relationship to ore processing activities. Comparison of ALTMs concentrations from this study and various other studies throughout the world suggests the need to take precautionary measures of surface soil in high altitude areas to avoid metal enrichments and its subsequent environmental problems.

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A weak acid extraction method as a tool for the metal pollution assessment in surface sediments

Cited by 22 publications

References 5 publications

Metal Pollution Assessment of Surface Sediments Along a New Gas Pipeline in the Niger Delta (Nigeria)

Metal Pollution Assessment of Surface Sediments Along a New Gas Pipeline in the Niger Delta (Nigeria)

An improved index for monitoring metal pollutants in surface sediments

Evaluation of Acid Leachable Trace Metals in Soils Around a Five Centuries Old Mining District in Hidalgo, Central Mexico

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