Hyperaccumulative Characteristics of Weed Species to Heavy Metals

Wei, Shuhe; Zhou, Qixing; Saha, Uttam Kumar

doi:10.1007/s11270-008-9644-9

Cited by 47 publications

(13 citation statements)

References 24 publications

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“…Thus, considering tolerance, accumulation, BCF, and TF properties together, only Carex tristachya indicated Cdhyperaccumulative characteristics. Wei et al also reported that some weed species displayed Cd-hyperaccumulative properties, such as Rorippa globosa, Conyza canadensis, Taraxacum mongolicum, and so on [15,18]. Considering the risk of heavy metals returning to the environment in the process of phytoextraction, plant shoots with accumulated heavy metals should be recovered and disposed of adequately.…”

Section: Accumulation and Translocation Of Metals In Plantsmentioning

confidence: 99%

“…Ghosh and Singh [16] indicated that Ipomoea carnea was more effective in removing Cd from soil than the hyperaccumulator Brassica juncea. Solanum nigrum, Conyza canadensis, and Rorippa globosa were found to possess basic characteristics of a Cd-hyperaccumulator [17,18]. Muhammad et al [19] investigated wild plants growing around Pb-Zn sulfide terrain in the Kohistan region of northern Pakistan and found that Plectranthus rugosus, Rumex hastatus, Fimbristylis dichotoma, Heteropogon conturtus, and Myrsine africana were the best heavy metal accumulators.…”

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confidence: 99%

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Bioaccumulation of Cadium, Copper, Zinc, and Nickel by Weed Species from Municipal Solid Waste Compost

Zhao¹,

Duo²

2015

Pol. J. Environ. Stud.

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With the rise in population and economic development, municipal solid waste (MSW) is being produced massively, especially in developing countries. Chinese cities generate more than 100 million tons of MSW every year [1]. A lot of attention has been paid to the disposal of large volumes of MSW in China. Composting has proved to be an effective way to reduce large quantities of MSW and accelerate the biodegradable components to decompose and stabilize, for completely sustainable recycling [2]. The use of MSW compost on agricultural land enables the recycling of valuable plant nutrients N, P, and K plus micronutrients and organic matter, resulting in beneficial effects on soil properties such as water-holding capacity, aeration and porosity, and plant nutrition [3][4][5]. However, MSW compost often contains potentially toxic metals that can cause phytotoxicity, soil contamination, and accumulation in plant and animal products [6][7][8]. Therefore, toxic metals should be cleaned up before MSW compost application on agricultural land.Phytoextraction, which uses appropriate plants to remove metals from contaminated soils, has gained popularity due to its low cost and comparatively lower damage [9, 10]. Early studies mostly focused on hyperaccumulator plant species and more than 400 species of hyperaccumulators have been documented in the world [11,12]. Though hyperaccumulators can accumulate exceptionally high quantities of metals, they are not practically used in phytoextraction partly due to the fact that the hyperaccumulator plants are relatively rare, have limited response to various metals, and maintain a slow growth rate [13]. Thus identification of more effective hyperaccumulators is of Pol. J. Environ. Stud. Vol. 24, No. 1 (2015), [413][414][415][416][417] AbstractA field experiment was conducted to evaluate the efficiency of native monocotyledonous weed species for heavy metal phytoextraction from municipal solid waste (MSW) compost. Results showed that total contents of cadium (Cd), copper (Cu), and zinc (Zn) in MSW compost generally exceeded the maximum levels indicated in Chinese regulations, except nickel (Ni). The general trend of metal accumulation in plants was Zn>Cu>Ni>Cd and accumulation differences depended on plant species. Except for Carex tristachya, the Cd, Cu, and Ni contents in above-ground parts of four other species were within the normal values in plants. Most plants accumulated target metals mostly in the roots. With BCF and TF values >1, Carex tristachya displayed some Cd-hyperaccumulative characteristics, being classified as potential species for phytoextraction of Cd from MSW compost. Other species can be considered adequate candidates for metal stabilization and soil conservation.

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Section: Accumulation and Translocation Of Metals In Plantsmentioning

confidence: 99%

mentioning

confidence: 99%

Bioaccumulation of Cadium, Copper, Zinc, and Nickel by Weed Species from Municipal Solid Waste Compost

Zhao¹,

Duo²

2015

Pol. J. Environ. Stud.

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“…Since many plants have the tendency to assimilate metals from their surroundings, several species have been evaluated for their utility as biological monitors of environmental metal pollution [3][4][5][6]. A good biological monitor should be a species that is represented by large number of individuals over a wide geographic area and has a broad tolerance to metals and accumulates them at levels reflecting those present in the environment, so that its chemical composition will provide 2 Journal of Chemistry a measure of the magnitude of contamination when assessed against background values [4,[7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Metal Content in Dandelion (Taraxacum officinale) Leaves: Influence of Vehicular Traffic and Safety upon Consumption as Food

Giacomino

Malandrino

Colombo

et al. 2016

Journal of Chemistry

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The widespread distribution of the common dandelion, that is,Taraxacum officinale, along with its ability to tolerate a wide range of environmental conditions, makes this plant a good candidate as biological monitor of environmental metal contamination.Taraxacum officinaleleaves growing spontaneously in meadows and along the streets are traditionally picked up and eaten in Italy as salad, so it is important to know the concentrations of potentially toxic elements contained in them from the point of view of food safety. For these reasons the concentrations of Cd, Cr, Cu, Fe, Mn, Pb, and Zn were determined in dandelion leaf and underlying soil samples collected at 12 sites in the province of Cuneo (Piedmont, Italy) in the vicinity of streets or roundabouts. The concentrations were compared with reference values for plant and soils and with maximum allowable concentrations in edible vegetables. Neither dandelion nor soil samples were found to be polluted by metals, but the comparison with limits for vegetables suggests that caution should be used in consuming spontaneously growing vegetables.

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“…It was demonstrated that some wild plants had the potential for phytoremediation of metal-contaminated soils (Wei et al 2008;Bareen and Tahira 2011). The advantages of applying weeds to phytoremediation are the large biomass' the adaptability of the environment, and the early growing season.…”

Section: Introductionmentioning

confidence: 99%

Effects of ethylenediaminetetraacetic acid and ammonium sulfate on Pb and Cr distribution in Kochia scoparia from compost

Zhao

Shang

Duo

2013

Int. J. Environ. Sci. Technol.

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In a municipal solid waste (MSW) compost field, Kochia scoparia, an easy-to-grow weed plant, gradually invaded the experiment site and became the dominant species after 4 years' succession. 21.6, 19.2, 111.3, 124.3, and 154.0 % in 0-30, 30-60, 60-90, 90-120, and over 120 cm spatial shoots, respectively, as compared to those of controls. The increment for Cr uptake was 244.5, 281.7, 100.0, 77.2, and 187.4 %. The relationship between Pb and Cr concentrations in plant shoots and spatial height was found to be positively linear and statistically significant at 1 % level at 50 mmol L -1 EDTA alone and 25 mmol L

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Hyperaccumulative Characteristics of Weed Species to Heavy Metals

Cited by 47 publications

References 24 publications

Bioaccumulation of Cadium, Copper, Zinc, and Nickel by Weed Species from Municipal Solid Waste Compost

Bioaccumulation of Cadium, Copper, Zinc, and Nickel by Weed Species from Municipal Solid Waste Compost

Metal Content in Dandelion (Taraxacum officinale) Leaves: Influence of Vehicular Traffic and Safety upon Consumption as Food

Effects of ethylenediaminetetraacetic acid and ammonium sulfate on Pb and Cr distribution in Kochia scoparia from compost

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