This Special Issue “Bio-Geochemistry of Heavy Metals/Metalloids” contains a series papers that cover range topics highlighting the role microorganisms in ore-forming biochemical processes and potential environmental risk (the first to fourth papers), assessment potentially toxic element contamination using plants living benthic Foraminifera fifth sixth phytoremediation contaminated land seventh...

Metallothioneins are small proteins (6,000 to 10,000 mw) with similar amino acid compositions, high content of sulfhydryl amino acids and no aromatic amino acids. Emax at 250 nm is due to cadmium mercaptide bond. Synthesis is induced by a number of metals including zinc, cadmium, mercury, copper, bismuth, gold and silver. These proteins function as a mechanism of intracellular storage of some e...

background: a pot experiment was conducted to determine the toxic effects of some heavy metals on the plant growth and seed yield of maize (zea mays l.). materials and metheds: heavy metals mn, pb, cd, cr and co individually and in combinations were added as chloride salts in solutions to the pots before sowing. the test plants for were harvested after 80 days of germination and evaluated for n...

Art materials are used by individuals of all ages, ranging from kindergarten children to adults studying the arts at a university level, as well as the general public, senior citizens, and mentally compromised individuals. Art materials have the potential of containing toxic materials, including carcinogens (such as nickel, chromium, cadmium, and lead) and reproductive toxins in their formulati...

Cement factories are the main sources of environmental pollutants among different industrial activities, including soil contamination by potentially toxic metals. The karst region Southeastern Brazil is known for implementation large cement producing facilities. This study aims to evaluate whether there an increase in concentration PTM surrounding plants and estimate their harmfulness both loca...