1.1 Origin and discovery Silicon, one of the more common elements in nature, is defined as a metalloid, which corresponds to the number 14 in the Mendeleyev Periodic Table. It is heavier than Carbon (element number 6 in the periodic table and a key component in biochemistry), but both have chemical characteristics that are very close. Since human civilization began, volcanic stones containing t...

Heavy metal and metalloid poisoning in the environment food has piqued public’s interest since it poses significant hazards to ecological system human health. In food, several metals, including cadmium (Cd), lead (Pb), mercury (Hg), tin (Sn), manganese (Mn), aluminium (Al), metalloids, arsenic (As), antimony (Sb), selenium (Se), pose a severe threat It is of utmost importance detect even minute...

In this study, some metals (aluminium, chromium, copper, iron, manganese, lead, zinc and vanadium) and metalloid (silicon) were determined in water, sediment and some tissues of fish Cyprinus carpio from Mogan Lake. Fish samples were caught in March 2007. As a result of the examination of metals in the water aluminium has the lowest and silicon has the highest concentration. In sediment samples...