List Of Selenium Material 2023. Web selenium occurs naturally in biological materials that vary from a few parts per billion to a few per cent. Small amounts of selenium are necessary for cellular function in humans and many animals.
They offer remarkable potential for technological applications in the fields of medicine, diagnostics, therapeutics, toxicology, electronics, catalysis and so on. Methods for its determination, therefore, cover a wide range of concentrations. Web selenium is a semimetallic element lying in group xvi of the periodic table with its chemical properties resembling sulfur.
