Mercury concentration in ice-core samples has been determined by the newly developed atomic absorption techniques. As shown in the attached Table. mercury concentration is by far larger in recent snows than in ancient ice. This fact reflects the increasing worldwide consumption of this element and the progressive atmospheric pollution by heavy metals including lead since the Industria... https://www.bekindtopets.com/quick-grab-Canine-Spectra-KC-3-Single-Dose-great-price/