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    2018-12-5  Results show that the BAF of Fe and Zn were higher than those of Cu, Mn, Cr and Pb; with the exception of Zn, BAF were higher in the submerged structures of the plant, which shows low mobility of analyzed metals. As a result of this study H. ranunculoides can be considere as good indicator of metal pollution in water bodies. Rev. Int. Contam.

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    The calculated soil pollution indices (PI) ranked the four metals as Cd > Pb > Cu > Zn (), indicating serious soil Cd and Pb accumulation in the study area.The mean total soil Cd, Pb, and Cu concentrations were all greater than the risk screening values (RSV) set forth within the Soil Environmental Quality Standard (Ministry of Ecology and Environment of China, State Administration for Market ...

  • Accumulation of Pb, Cu, and Zn in native plants

    In this study, a total of 36 plant samples of 17 species was collected from 10 locations at the site. Concentrations of Pb, Cu and Zn in soils and plant biomass are provided in Table 2, Table 3, Table 4.Total Pb concentrations in the plants ranged from non-detectable to as high as 1183 mg kg − 1, with the maximum being in the roots of Phyla nodiflora from site 4 ().

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    The stress-resistant exotic olive, Olea europaea exhibited EF of ≤ 0.01 for Cu, Cd, and Pb, and 0.29 for Zn, which is characteristic of an excluder plant. Acacia pycnantha, the Australian pioneer legume species with EF 0.03, 0.80, 0.32, and 0.01 for Cu, Zn, Cd, and Pb, respectively, emerged as another strong metal excluder and consequently as ...

  • Phytoextraction of Cu, Zn, and Pb Enhanced by

    AbstractIntroductionMaterials and MethodsResults and DiscussionConclusionPhytoextraction is a green remediation technology for clean-up contaminated soils. The effect of chelator application including EDTA, EDDS, and citric acid on phytoextraction of Cu, Zn, and Pb into high biomass vetiver (Vetiveria zizaniodides) was investigated in the hydroponic experiment and the pot experiment. In the hydroponic test, EDTA induced the most significant toxic symptom on vetiver compared to EDDS and citric acid. Obvious biofilm was attached in the rhizosphere of vetiver with the citric acid addition due to
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    2014-9-4  For heavy metal analysis, the dried and ground plant samples were digested with HNO 3–HClO 4, while soil samples were digested with HNO 3–H 2O 2 (EPA 3050B). The elements of Cu, Pb, Zn, and Cd were determined by inductively coupled plasma optical emission spectrometry (5300DV, PerkinElmer U. S.). As was determined using atomic fluorescence ...

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    Phytoextraction is a green remediation technology for clean-up contaminated soils. The effect of chelator application including EDTA, EDDS, and citric acid on phytoextraction of Cu, Zn, and Pb into high biomass vetiver ( Vetiveria zizaniodides ) was investigated in the hydroponic experiment and the pot experiment. In the hydroponic test, EDTA induced the most significant toxic symptom on ...

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    In highly polluted soil, Datura innoxia reduced by 10.63%, 120%, 34.67% and 44.27% respectively an initial Pb concentration of 125 mg / kg, Cd of 0.58 mg / kg, Cu of 208.48 mg / kg and in Zn of 139.83 mg / kg. Conclusion: Datura innoxia is an excellent candidate for the phytoremediation of Pb, Cd, Cu and Zn.

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    This mechanism can be activated only if there is Zn or Cu available (Goldstein et al., 2006). Fig. 2 shows Cu and Zn concentration in topsoils at sampling sites from 1 to 6, where Pb concentration was elevated, and the ANOVA comparison among sites for each metal. Sampling site 5 presented significantly lower Zn concentration than sites 1, 2 and ...

  • Screening and Evaluation of the Bioremediation

    Our findings suggest that Acinetobacter sp. FQ-44 could be exploited for bacteria-assisted phytoextraction. Moreover, the present study provides a comprehensive method for the screening of rhizobacteria for phytoremediation of multi-metal-polluted soils, especially those sewage sludge-amended soils contaminated with Cu/Zn.

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    In highly polluted soil, Datura innoxia reduced by 10.63%, 120%, 34.67% and 44.27% respectively an initial Pb concentration of 125 mg / kg, Cd of 0.58 mg / kg, Cu of 208.48 mg / kg and in Zn of 139.83 mg / kg. Conclusion: Datura innoxia is an excellent candidate for the phytoremediation of Pb, Cd, Cu and Zn.

  • Arsenic and heavy metals in native plants at tailings ...

    Ten native plants species that grow in three tailings dams from Ag, Pb, Cu and Zn mine in Queretaro, Mexico were studied. Total concentrations in tailings were 183–14,660 mg/kg As, 45–308 mg/kg Cd, 327–1754 mg/kg Pb, 149–459 mg/kg Cu and 448–505 mg/kg Zn. In the three tailings dams, the solubility of these elements is low.

  • Screening and Evaluation of the Bioremediation

    Our findings suggest that Acinetobacter sp. FQ-44 could be exploited for bacteria-assisted phytoextraction. Moreover, the present study provides a comprehensive method for the screening of rhizobacteria for phytoremediation of multi-metal-polluted soils, especially those sewage sludge-amended soils contaminated with Cu/Zn.

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  • Effect of Mining Activities in Biotic Communities of

    The main activity in Villa de la Paz is the extraction of fluorite, Zn, Ag, Cu, Pb, bentonite, Au, clay, silica, limestone, and salt. For the past few years 2007–2012 246,665.36 ton of Au, Ag, Cd, Cu, Pb, Zn has been extracted . This activity has been taking place for the past 200 years, and it has generated a great amount of waste (tailings ...

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    Arsenic, Cd, Cu, Fe, Mn, Pb, V, and Zn total concentrations were determined; in addition, geochemical phase distribution of As, Cu, Mn, and Zn in selected samples was determined by sequential extraction. Concentrations were measured by graphite furnace atomic absorption spectrometry and

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    Arsenic, Cd, Cu, Fe, Mn, Pb, V, and Zn total concentrations were determined; in addition, geochemical phase distribution of As, Cu, Mn, and Zn in selected samples was determined by sequential extraction. Concentrations were measured by graphite furnace atomic absorption spectrometry and

  • Effect of Mining Activities in Biotic Communities of

    The main activity in Villa de la Paz is the extraction of fluorite, Zn, Ag, Cu, Pb, bentonite, Au, clay, silica, limestone, and salt. For the past few years 2007–2012 246,665.36 ton of Au, Ag, Cd, Cu, Pb, Zn has been extracted . This activity has been taking place for the past 200 years, and it has generated a great amount of waste (tailings ...

  • Different spontaneous plant communities in Sanmen

    Ratios of total Cu, Zn, Cd, and Pb concentrations in surface soils to underlying and surface tailings, and ratios comparing the south and north portions of the pond, indicate that the relative ...

  • Heavy Metals in Soil and Application of New Plant ...

    Pb was most accumulated in the couch grass in Gornji Krnjin (253.84 μg g-1 SM). The tendency of accumulation in this plant also has Zn (206.12 μg g-1 SM in Grabovac; 244.22 μg g-1 SM in Gornja Krnjina). And the tall fescue accumulated Pb and Zn at all measuring points, in values above tolerant.

  • Source, Spatial Distribution and Pollution Assessment

    The range of 206 Pb/ 204 Pb, 207 Pb/ 204 Pb, 208 Pb/ 204 Pb were 18.4–17.3, 16.4–14.4, and 42.8–38.2, respectively. The highest average ratio of 206 Pb/ 204 Pb (19.05) indicated Pb in soils ...

  • Phytoremediation assessment of native plants

    The tolerance of plant to heavy metals (lead, zinc and cadmium) is evaluated. Soil samples were collected and analyzed for Pb, Zn and Cd concentration. The total soil Pb, Zn and Cd are, respectively, reached 6132 mg kg −1, 11,052 mg kg −1 and it doesn’t exceed 479 mg kg −1 for Cd.

  • Survey of Persistent Organochlorine Contaminants

    2019-5-26  Concentrations of PCBs, PCDDs, and PCDFs, heavy metals (Cu, Cd, Zn, Pb, and Hg), and arsenic have been determined in a great variety of food samples purchased in different markets across the city of Huelva, located in southwestern Spain and under strong industrial activity. All samples analyzed presented concentrations below the maximum allowed by the European Community

  • Assessment of Soil Metal Concentrations Along the ...

    2015-9-16  it has Pb levels of ~600‐800 mg kg‐1; and higher levels of Fe, Cu, and Zn. The residential screening limit for Pb in soils is 400 mg kg‐1 (Brevik, 2013). These sludge materials were found both in New Mexico and Colorado, both on the stream banks and underwater (Fig. 4).

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