Scattered literature is harnessed to critically review the possible sources, chemistry, potential biohazards and best available remedial strategies for a number of heavy metals (lead, chromium, arsenic, zinc, cadmium, copper, mercury and nickel) commonly found in contaminated soils.
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This review summarizes available data in the literature (2005–2012) on heavy metal polluted soils originating from mining areas in China. Based on these obtained data, this paper then evaluates the soil pollution levels of these collected mines and quantifies the risks these pollutants pose to human health.
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Irrigated water plays an important role in heavy metal contamination in soil . Use of sewage water for irrigation for a long time degrades the quality of plants and increase the toxic elements . Impure water from industrial area effects agricultural soil and river beds [35,36].
LITERATURE REVIEW 2.1 Heavy Metal Pollution Heavy metal are metallic elements with high atomic weight and density. These include the transition metals, some metalloids, lanthanides and actinides. Amounting to more than 20 metals generally exist in a positively charged form and can bind on to negatively-charged organic molecules.
Challenges and opportunities in the phytoremediation of heavy metals contaminated soils: A review Article · Literature Review (PDF Available) in Ecotoxicology and Environmental Safety 126:111-121
REVIEW OF LITERATURE . 12 REVIEW OF LITERATURE Heavy metals make significant contribution to environmental pollution Elevated concentrations of both essential and non-essential heavy metals in the soil and water can lead to toxicity symptoms and growth inhibition
Institute of Nuclear Science University of Nairobi for the analysis of heavy metals in the vegetable soil and water samples respectively. In a special way I appreciate the guidance given by Dr. Isaac Mwanzo, Dr. Harrison Atieli, Mr. Jackim Nyamari, Miss. Judy Mugo, Mr. Anthony Ireri, CHAPTER TWO: LITERATURE REVIEW
Author: Joan Murugi Njagi
4. Plants and metals. 4.1 Plant uptake and transport of metals. Plants have developed a range of mechanisms to obtain metals from the soil solution and transport these metals within the plant. Much of the research, and hence understanding, of these mechanisms has been at sufficiency and deficiency levels of metals.
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Analytical techniques for estimation of heavy metals in soil ecosystem: A tabulated review Article · Literature Review in Talanta 125 · February 2014 with 1,123 Reads DOI: 10.1016/j.talanta.2014
International Journal of Chemical Engineering is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles on technologies for the production, processing, transportation, and use of chemicals on a large scale. Since the bioavailability of heavy metals in soils decreases above pH 5.5–6, the
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2. LITERATURE REVIEW 2.1.Heavy metals The metals are classified as “heavy metals” if, in their standard state, they have a specific gravity of more than 5 g/cm3. There are sixty known heavy metals. Heavy metals can accumulate over time in soils and
levels of heavy metal in the soil, leading to reduction of crop yield [4, 5]. The heavy metals cadmium (Cd), arsenic (As) and The objective of this paper is to review the available literature on extent of heavy metals contamination in agricultural soils, sources of the contamination, extent of
Author: Fides Simon, Kelvin Mark Mtei, Martin Kimanya
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Portland Cement: A Literature Review Santanu Paria a and Pak K. Yuet (heavy metals) and organic compounds on cement hydration, and (iii) the mechanisms of earlier, precipitation is a key mechanism of retaining heavy metals in soils. The concentration of
shown that the elaboration of maximum permissible concentrations of heavy metals in soil is the most important requirement for the correct assessment of soil contamination and the application of various preventive and remediation measures (Galiulin et al., 2002).