The interaction between some heavy metal ions such as of Pb(II), Cd(II) and Cu(II) ions from aqueous solution adsorbed by single walled carbon nanotube (SWCNTs) and carboxylate group functionalized single walled carbon nanotube (SWCNT-COOH) surfaces were studied by atomic absorption spectroscopy. The effect of contact time, pH, initial concentration of ion, ionic strength and temperature on the...

1. Basic Concepts 1.1. Air Pollution 1.2. Criteria and Non-Criteria 1.3. Emissions 2. The Epidemiological Model 3. Toxic Trace Elements from Fossil Fuel Combustion 4. Environmental Behavior of Metal Pollutants 4.1. Atmospheric Aerosol Particles 4.2. Aqueous and Marine Environments 4.3. Accumulation of Heavy Metals in Marine Invertebrates 4.4. Heavy Metal ions in Soils 4.5. Methylation of Heavy ...

Micronuclei (MN) test is used as markers of radiosensitivity or chemosensitivity. In present study, it was investigated the frequency of MN in erythrocytes and body weight gain in 80 Mus musculus var. albinos exposed to 10 Gy gamma (γ) radiation and heavy metal ions. For this aim, it was used MN assay as an indicator of genotoxicity induced by γ–radiation and heavy metal toxication. The animals...

This work describes the preparation of the cellulose phosphate with high ion exchange capacity from rice straw and bagasse for removal of heavy metals. In this study, rice straw and bagasse were modified by the reaction with phosphoric acid in the presence of urea. The introduced phosphoric group is an ion exchangeable site for heavy metal ions. The reaction by microwave heating yielded modifie...

While the toxicity of metals and metalloids, like arsenic, cadmium, mercury, lead and chromium, is undisputed, the underlying molecular mechanisms are not entirely clear. General consensus holds that proteins are the prime targets; heavy metals interfere with the physiological activity of specific, particularly susceptible proteins, either by forming a complex with functional side chain groups ...

Phytoremediation is a promising means of ameliorating heavy metal pollution through the use of transgenic plants as artificial hyperaccumulators. A novel Streptococcus thermophilus γ-glutamylcysteine synthetase-glutathione synthetase (StGCS-GS) that synthesizes glutathione (GSH) with limited feedback inhibition was overexpressed in sugar beet (Beta vulgaris L.), yielding three transgenic lines ...

The present work demonstrates the heavy metal resistance and detoxification of Cr(VI) by the probiotic actinobacterial cultures isolated from chicken and goat feces. The actinobacterial isolates were screened for heavy metal resistance by qualitative, semiquantitative assays and Cr(VI) biosorption was determined by analytical techniques such as atomic absorption spectrophotometry and Fourier tr...

At present, there is growing interest in using low cost, commercially available materials for the adsorption of heavy metals. The major advantages of adsorption technologies are its effectiveness in reducing the concentration of heavy metal ions to very low levels and the use of inexpensive adsorbent materials. In this review, agricultural and forest waste adsorbents were used to remove Pb ions...

Previous studies have indicated that heavy metal exposure can have an effect on the central nervous system. However, research has been inadequate to fully support this claim. The aim of this work was to determine the toxic effects of heavy metal ions including Fe, Fe, Hg, Mn, Cd, Mg, and Pb on nerve cells (e.g. PC12). PC12 cells were incubated with the metal ions at four concentrations, i.e. 12...

The project concerns to adsorptive elimination of heavy metal ions from aqueous solution, namely to synthesis, modifying, studying of properties and to application combined biosorbents on the base of materials from agricultural by products. The main purpose is preparation of effective biosorbents for elimination of heavy metals ions from aqueous systems. The potential to remove metal ions from ...