Trace metal concentrations in the sediments and plants of the Danube Delta, Romania

Keller, Barbara; Lajtha, Kate; Cristofor, Sergiu

doi:10.1007/bf03161441

Cited by 61 publications

(32 citation statements)

References 33 publications

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“…Accordingly, the different compartments studied could be arranged as follows: sediment > roots > leaves > water, indicating that metal contamination could be easily detected in sediment or plant tissues. The general trend was that root tissues accumulated significantly higher concentrations of metals than leaves (with the exception of Hg), indicating high plant availability of metals as well as their limited (Deng et al 2004;Keller et al 1998;Taylor and Crowder 1983;Ye et al 1997), in free-floating macrophytes (Banerjee and Sarker 1997;Hadad et al 2007;Satyakala and Kaiser 1997), and in aquatic trees. Yu et al (2008) studied the uptake and translocation of Cr(III) and Cr(VI) by two willow species.…”

Section: Discussionmentioning

confidence: 96%

Hg, Cu, Pb, Cd, and Zn Accumulation in Macrophytes Growing in Tropical Wetlands

Núñez

Marrugo‐Negrete

Rios

et al. 2010

Water Air Soil Pollut

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The concentrations of Hg, Cu, Pb, Cd, and Zn accumulated by regional macrophytes were investigated in three tropical wetlands in Colombia. The studied wetlands presented different degrees of metal contamination. Cu and Zn presented the highest concentrations in sediment. Metal accumulation by plants differed among species, sites, and tissues. Metals accumulated in macrophytes were mostly accumulated in root tissues, suggesting an exclusion strategy for metal tolerance. An exception was Hg, which was accumulated mainly in leaves. The ranges of mean metal concentrations were 0.035-0.953 mg g −1 Hg, 6.5-250.3 mg g −1 Cu, 0.059-0.245 mg g −1 Pb, 0.004-0.066 mg g −1 Cd, and 31.8−363.1 mg g −1 Zn in roots and 0.033-0.888 mg g −1 Hg, 2.2-70.7 mg g −1 Cu, 0.005-0.086 mg g −1 Pb, 0.001-0.03 mg g −1 Cd, and 12.6-140.4 mg g −1 Zn in leaves. The scarce correlations registered between metal concentration in sediment and plant tissues indicate that metal concentrations in plants depend on several factors rather than on sediment concentration only. However, when Cu and Zn sediment concentrations increased, these metal concentrations in tissues also increased in Eichhornia crassipes, Ludwigia helminthorriza, and Polygonum punctatum. These species could be proposed as Cu and Zn phytoremediators. Even though macrophytes are important metal accumulators in wetlands, sediment is the main metal compartment due to the fact that its total mass is greater than the corresponding plant biomass in a given area.

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Section: Discussionmentioning

confidence: 96%

Hg, Cu, Pb, Cd, and Zn Accumulation in Macrophytes Growing in Tropical Wetlands

Núñez

Marrugo‐Negrete

Rios

et al. 2010

Water Air Soil Pollut

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“…were usually separated in order to obtain information about the species' ability to transfer metals. Plant samples were divided into three portions, first for wet chemical destruction (Keller et al, 1998;Scholes et al, 1999;Batty et al, 2000), second for dry ash chemical destruction (Baudo et al, 1985;Hall and Pulliam, 1995;Peverly et al, 1995;Ye et al, 1997), in third portion only leaves of plants were used for wet chemical extraction to obtain amino acids and proteins present in the plant leaves (Gibbs, 1951;Charles and Glenn, 1953;Carpena-Ruiz et al, 1989). The proteins present were then further hydrolysed in order to obtain the amino acids units.…”

Section: Plant Analysismentioning

confidence: 99%

Heavy metals accumulation in plants growing in ex tin mining catchment

Ashraf

Maah

Yusoff

2011

Int. J. Environ. Sci. Technol.

174

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ABSTRACT:The degree of contamination by heavy metals (arsenic, copper, lead, tin and zinc) in soil and transfer to plants has been studied. Specimens of plant species from five locations in an area of 10 x 10 m were sampled with their corresponding soils. Thirty six plant species including two shallow water aquatic plants were identified. Soil and plant specimens were analyzed by using inductively coupled plasma optical emission spectrometry. It was found that metal concentration in soil was highly variable while concentration of metals in plants directly depends on the concentration of metals it was rooted. Roots showed highest metal concentration followed by leaves, shoots and flowers. Bioconcentraion factor and translocation factor were calculated, representing Cyperus rotundus L. as a potential tin-hyperaccumulator plant, previously not reported in literature. Plant Species Imperata cylindrica, Lycopodium cernuum, Melastoma malabathricum, Mimosa pudica Linn, Nelumbo nucifera, Phragmites australis L., Pteris vittata L. and Salvinia molesta, were metal accumulator while Acacia podalyriaefolia G. Don, Bulb Vanisium, Dillenia reticulate King, Eugenia reinwardtiana, Evodia roxburghiania Hk. f. clarke, Gleichenia linearis, Grewia erythrocarpa Ridl., Manihot esculenta Crantz, Paspalum conjugatum Berguis, Passiflora suberosa, Saccharum officinarum, Stenochlaena palustris (Burm.) Bedd. and Vitis trifolia Linn. were tolerated plant species. All other studied plants were excluders. Identified plant species could be useful for revegetation and erosion control in metals contaminated ex-mining sites. Morphological changes such as reduction in size, change in color and deshaping have also been observed in plant species with high metal values.

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“…(Crowder 1991;Ye et al 1997;Demirezen and Aksoy 2004), Phragmites spp. (Crowder 1991;Keller et al 1998;Ye et al 1998a, b;Batty et al 2000;Weis and Weis 2004), Scirpus spp. (Bhattacharya et al 2006) and Lemna spp.…”

Section: Introductionmentioning

confidence: 97%

Spatial variation of redox and trace metal geochemistry in a minerotrophic fen

et al. 2007

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Pore water and solid phase samples were collected from the upper 50 cm of a peat profile at four sites within a 10 m 2 area in Kleinstuck Marsh, a minerotropic fen located in Kalamazoo, MI. Although the chosen sites are in close proximity to each other, they differ with respect to vegetation species and density. Pore water analyses for a suite of redox sensitive species (pH, alkalinity, dissolved Mn(II), Fe(II), Fe(III), sulfide, sulfate), together with Fe and Mn distributions inferred from operationallydefined sequential extractions, demonstrate that Fe(III) and Mn(IV) reduction occurs in the shallow peat at three of the four sites. At the fourth site, the only site containing the invasive purple loosestrife (Lythrum salicaria), accumulation of dissolved sulfide in the pore waters and increased levels of oxidizable phases in the shallow peat point to increased net sulfate reduction relative to the other three sites. Speciation calculations indicate that pore water concentrations of phosphate, especially below *10 cm depth, are largely controlled by the solubility of phases such as strengite or hydroxylapatite, and that at all but the loosestrife site, dissolved Ca and Mg are likely determined by carbonate solubility.Fe and Mn distribution among operationally defined solid phase fractions are consistent with reductive dissolution of FMO in the uppermost peat, leading to precipitation of Fe sulfides and Mn carbonates deeper in the peat profile. Zn, Co, Cr and Ni distributions are consistent with release from FMO to form sulfides or organic associations deeper in the peat. Pb and Cu may also be released by reductive dissolution of FMO, or more likely, shift from primary association with organic matter to increased association with sulfides under more sulfidic conditions. This study highlights the existence of extreme lateral variations in peat pore water and solid phase geochemical profiles, even over quite small areas.

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Trace metal concentrations in the sediments and plants of the Danube Delta, Romania

Cited by 61 publications

References 33 publications

Hg, Cu, Pb, Cd, and Zn Accumulation in Macrophytes Growing in Tropical Wetlands

Hg, Cu, Pb, Cd, and Zn Accumulation in Macrophytes Growing in Tropical Wetlands

Heavy metals accumulation in plants growing in ex tin mining catchment

Spatial variation of redox and trace metal geochemistry in a minerotrophic fen

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