heavy metals

(redirected from Heavy elements)
Also found in: Medical, Encyclopedia.

heavy metals

Elements including cadmium, lead and mercury, all poisonous. Careless dumping can create local health hazards.
References in periodicals archive ?
Researchers also observed traces of heavy elements such as aluminum, silicon and nickel on the white dwarf.
This evidence also implies that the early universe did not have as many heavy elements for making planets, because there would be fewer supernovae from massive stars to manufacture heavy elements for planet building.
Analyzing complex matrix materials with a wide range of light and heavy elements, from trace to high concentration levels, is the instrument's core competency.
Unlike a regular nova, which releases heavy elements but leaves a dwarf star behind, supernovae explode completely.
Objective: The proposed research will form a comprehensive study of the chemistry and structure of evolved stars on the Asymptotic Giant Branch (AGB) and their circumstellar envelopes (CSEs), and form a powerful basis also to study the origin and evolution of heavy elements in galaxies, and the effect of AGB evolution on the formation of stars and planets.
Pocar explained that the precision of the measurement was not enough to differentiate between two models of the Sun which show a difference in the amount of heavy elements like carbon and oxygen.
Nuclear processes in the interior of these stars have created heavy elements like iron, silicon, carbon and oxygen.
Several chapters at the end quickly cover nonmetals, toxic metals, and the use of radionuclides and less toxic heavy elements in medicine.
Academics at the universities of Warwick and Leicester now believe that significant quantities of various heavy elements - including gold - are created by the collisions of dead stars.
They detected the heavy elements from the way the elements absorb ultraviolet light.
Kervran hypothesized that transmutation results from weak energy interactions of atomic nuclei in these lighter elements (as opposed to the heavy elements used in nuclear fission or fusion).
The results of the study have shown that all organic products, which were at the centre of the study, did not meet the international specifications set for organic labels, especially being free of pesticide residues or heavy elements," she added.

Full browser ?