A recent study published in the BMC Public Health revealed higher urinary levels of metals and metalloids are significantly ...

Tiny particles of metal and metalloid elements spray into the air from natural sources, such as volcanoes, or from human-made sources, such as ore processing. Wind currents send them to the far ...

IN the account given in NATURE, vol. xxi. p. 445, of M. Raoul Pictet's proposal to dissociate the metalloid elements the following reason is given as the ground of his belief that these elements are ...

THE task set before me is to expound in as simple and intelligible language as possible the remarkable train of reasoning which has led M. Raoul Pictet, of Geneva, to the conclusion that the so-called ...