Heavy metal contamination and accumulation in soil and wild plant species from industrial area of Islamabad, Pakistan

Pakistan Journal of Botany (Impact Factor: 0.82). 01/2010; 42(1):291-301.

ABSTRACT This study was designed to assess total contents of 6 toxic metals viz., Pb, Cu, Zn, Co, Ni, and Cr in the soil and plant samples of 16 plant species collected from industrial zone of Islamabad, Pakistan. The concentration, transfer and accumulation of metals from soil to roots and shoots was evaluated in terms of Biological Concentration Factor (BCF), Translocation Factor (TF) and Bioaccumulation Coefficient (BAC). Total metal concentrations of Pb, Zn, Cu, Co, Ni, and Cr in soils varied between 2.0-29.0, 61.9-172.6, 8.9 to 357.4, 7.3-24.7, 41.4-59.3, and 40.2-927.2 mg/kg. Total metal concentrations pattern in roots were: Cu>Cr>Zn>Ni>Pb>Co. Grasses showed relatively higher total Zn concentration. Accumulation of Cu was highest in shoots followed by Zn, Cr, Pb, Co and Ni. None of plant species were identified as hyperaccumulator; however, based on BCFs, TFs, and BACs values, most of the studied species have potential for phytostabilization and phytoextraction. Parthenium hysterophoirus L., and Amaranthus viridis L., is suggested for phytoextraction of Pb and Ni, whereas, Partulaca oleracea L., Brachiaria reptans (L.) Gard. & Hubb., Solanum nigrum L., and Xanthium stromarium L., for phytostabilization of soils contaminated with Pb and Cu.

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Available from: Riffat Naseem Malik, Sep 28, 2015
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    • "However, the more the BF value of a plant, the more the plant is suitable for phytoremediation through phytoextraction. Many researchers also consider the bioconcentration factor between the concentration of heavy metals in the root (or in total plant biomass) relative to their concentration in the growth media, for phytoremediation (Malik et al. 2010; Ali et al. 2012). In this study, we considered only the As accumulation in the aboveground plant parts. "
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    ABSTRACT: In this research, the relative performance in arsenic (As) remediation was evaluated among some barnyard grass and rice species under hydroponic conditions. To this end, four barnyard grass varieties and two rice species were selected and tested for their remediation potential of arsenic. The plants were grown for 2 weeks in As-rich solutions up to 10 mg As L(-1) to measure their tolerance to As and their uptake capabilities. Among the varieties of plants tested in all treatment types, BR-29 rice absorbed the highest amount of As in the root, while Nipponbare translocated the maximum amount of As in the shoot. Himetainubie barnyard grass produced the highest biomass, irrespective of the quantity of As in the solution. In all As-treated solutions, the maximum uptake of As was found in BR-29 followed by Choto shama and Himetainubie. In contrast, while the bioaccumulation factor was found to be the highest in Nipponbare followed by BR-29 and Himetainubie. The results suggest that both Choto shama and Himetainubie barnyard grass varieties should exhibit a great potential for As removal, while BR-29 and Nipponbare rice species are the best option for arsenic phytoremediation.
    Environmental Monitoring and Assessment 01/2015; 187(1):4101. DOI:10.1007/s10661-014-4101-2 · 1.68 Impact Factor
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    • "Plants living in metal contaminated sediments can have exceptional properties which make them interesting for phytoremediation (Parizanganeh et al., 2010). There is evidence that many plant species have enormous ability to uptake and accumulate heavy metals and plays an important role in sequestering large quantities of metals from the environment by storing them in various tissues (Deng et al. 2004; Malik et al. 2010; Adams and Happines, 2010). Some tolerating and accumulating plants can adsorb heavy metals, and then transferring and storing them at the aboveground parts (phytoextraction) (Lasat 2002; Rafati et al. 2011; Ali et al. 2013). "
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    ABSTRACT: The main purpose of this investigation was to evaluate the levels of Cu, Ni and Pb in aboveground tissues of selected seven native plants growing naturally in sediments of three water reservoir dams at Albaha province, KSA. The elements level was different among plant species at the same site. Variation in concentration was greater in the leaves compared to the stem tissue. The selected plant species accumulate much higher Cu in their aboveground tissues than Ni and Pb. Biological concentration factor (BCF) and translocation factor (TF) were calculated and results generally indicate that the BCFs <1 for Cu, Ni, and Pb in most plants studied. Only for Pb the BCFs >1 in Pluchea Dioscroides (L.) DC. at Medhas dam location. TF (leaf/stem) values > 1 in most of the plant species studied, indicating the ability to take up and translocate the studied heavy metals from the stem to the leaves with a slight variation in efficiency. The highest TF values found for Lavandula Pubescens Decne. were 3.346 for Pb and 2.069 for Cu. Datura inoxia Mill. (TF=2.066) was efficient in translocation of Cu metal and Pulicaria Crispa (Forssk.) Oliv. (TF=2.296) was efficient in translocation of Pb from the stem to leaves. [Sami A. Zabin and Saad M. Howladar. Accumulation of Cu, Ni and Pb in Selected Native Plants Growing Naturally in Sediments of Water Reservoir Dams, Albaha Region, KSA. Nat Sci 2015;13(3):11-17]. (ISSN: 1545-0740). 2
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    • "Evidence of compost piles dates back to 6000 BC and the first biological sewage treatment plant was constructed in UK in 1891. There are three classifications for environmental remediation: Biotransformation: transformation and conversion of pollutant molecules to molecules of low risk or no risk Biodegradation: a chemical or biological process which breaks organic matter into smaller organic molecules or inorganic (Malik ., 2010). Mineralization: complete biodegradation of organic matter to inorganic compounds such as CO2 or H2O (Boopathy, 2000). "
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