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Investigation of heavy metal mobility and availability by the BCR sequential extraction procedure: relationship between soil properties and heavy metals availability  

Posted on 4. December, 2014.

Surface soil and corn cob samples were collected from 15 different agricultural fields of Çanakkale, Turkey, and were analysed to determine the concentration of Cd, Cu, Mn, Ni, Pb and Zn. BCR sequential extraction was used to extract the binding forms of the metals in the soil samples. 

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Relationship between iron and trace metal fractionation in soils

Posted on 12. March, 2014.

Iron compounds significantly affect the behaviour of trace elements in soils. Sequential chemical extractions are widely used to estimate not only the solid phase speciation of chemical elements but to study their mobilisation conditions. In this paper, The authors present the effect of iron fractionation on that of trace metals in representative soils in Hungary.

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Chemical speciation and fractionation of metals in wine - free content

Posted on 28. February, 2014.

The analysis of metals in wines is of great importance for authenticity purposes and quality control. The elements can influence the wine-making process or change its taste and quality.

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Protonation equilibria of glycylglycine and histamine in aqueous solution of an anionic surfactant  

Posted on 26. February, 2014.

Peptides are an amazing, diverse and multi-faceted class of compounds constructed from relatively simple building blocks, the amino acids. They are components of tissues and exhibit a remarkable range of biological properties acting as antibiotics, hormones, food additives, poisons or pain-killers.

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Trace elements in different marine sediment fractions of the Gulf of Tunis (Central Mediterranean Sea)  

Posted on 20. February, 2014.

Most of the metal discharged into estuarine environments is the result of human activity, leading to the formation of sediments that are large repositories of potentially toxic compounds.

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Bioaccumulation and translocation of cadmium in wheat and maize from the polluted oasis soil of Northwestern China

Posted on 18. February, 2014.

There has been an increasing concern in recent years regarding food safety due to environmental pollution. Heavy metals in soils cannot be biodegraded, but can be bio-accumulated and bio-transformed by plants, and pose toxicity to plants beyond certain limits.

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Adsorption of arsenic on pre-treated zeolite at different pH levels

Posted on 14. January, 2014.

Water pollution by arsenic has become one of the biggest problems faced by the sustainable development in several countries. Arsenic contained in drinking water is responsible for many health problems such as lung cancer, bladder cancer, diabetes, muscular weakness, and black foot disease. This study shows the importance of using natural pre-treated zeolites in the adsorption of arsenic in water due to the adsorption percentages that are higher than 90%, controlling the pH in the pre-treatment.

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Speciation studies of Co(II), Ni(II) and Cu(II) complexes of L-valine in acetonitrile-water mixtures

Posted on 20. December, 2013.

Speciation study of essential metal ion complexes with amino acids is useful to understand the role played by the active site cavities in biological molecules and the bonding behaviour of protein residues with the metal ion. Chemical speciation of a molecule is governed by its structure and solvent effects. Hence, in recent years, researchers have shown interest in the study of metal ions interaction with various ligands

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Metal accumulation and physiological responses induced by copper and cadmium in Lemna gibba L. minor and Spirodela polyrhiza

Posted on 4. July, 2013.

Aquatic plants such as duckweeds and pondweeds accumulate toxic heavy metals and other pollutants. Hence they are use for biological monitoring and removal of toxic metals from water. An article in Chemical Speciation and Bioavailability considers the physiological effects induced by copper and cadmium in these plants.

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