The concentration of trace toxic metals (Cr, Zn, As, Pb, Cd, Cu, and Ni) in soil rice plants, including the stems, leaves, grain, from main rice-producing provinces Ecuador, was determined. Additionally, soils were analyzed to determine their properties, composition, total content, bioavailable fraction, geochemical fractions elements. Approximately 30% samples case Cr Cu 10% Ni exceeded legal ...

according to paracelsus (1493-1541) everything from this planet is poison, only the dose makes the poison to be harmless. even the essential elements for life support are toxic for all organisms in high amounts. mercury, cadmium, metalloid arsenic and lead were responsible for poisoning and death of many humans and life forms from this planet for centuries. cadmium forms different compounds tha...

According to Paracelsus (1493-1541) everything from this planet is poison, only the dose makes the poison to be harmless. Even the essential elements for life support are toxic for all organisms in high amounts. Mercury, cadmium, metalloid arsenic and lead were responsible for poisoning and death of many humans and life forms from this planet for centuries. Cadmium forms different compounds tha...

Contamination by heavy metals has attracted increasing attention considering the ability of these elements in producing serious consequence to ecosystem, and especially on animals health. Due to their widespread use in human activities such as industry, agriculture and even as medicine (e.g. arsenic, selenium and platinum), numerous health risks may be associated with exposure to these substanc...