Sentence examples for metal essential from inspiring English sources

The concentration of zinc, a metal essential to a variety of biological functions, ranges between approximately 0.05 nanomole/kg (5 × 10−11 mole/kg) in the surface ocean to as much as 6 nanomoles/kg (6 × 10−9 mole/kg) in the deep Pacific.

Moreover, supports with higher reducibility favored the production of H2O2, probably due to an easier reduction of the active metal, essential to achieve high selectivity.

The answer lies deep beneath the Tonto National Forest, site of one of the world's largest deposits of copper ore -- a metal essential to modern life and industry.

Even metals essential for life can be toxic if they are present in excessive amounts.

These celestial rocks are loaded with the sort of rare metals essential for the manufacturing of computers and smartphones – metals that are becoming increasingly scarce on Earth.

One of the world's largest deposits of rare earth metals — essential for manufacturing cellphones, wind turbines and electric cars — sits just outside Narsaq.

Even metals essential for life can exert toxicity when present above certain threshold concentrations (Gadd, 2011).

Accordingly, this study focuses primarily on the investigation of heavy metals, essential elements such as Na and K. Heavy metals and essential elements were determined using spectroscopic and titrimetric techniques.

Control sample (bottle water) was analyzed for heavy metals, essential elements, sulphates, carbonates, fluorides, and chlorides prior to the analysis of water sample from hand-dug wells.

But it's also home to 93percentt of the global production of so-called rare earth elements -- including two metals essential for a wide array of green technologies, from hybrid cars to wind turbines.

Besides interfering with Ca, Cd also alters the metabolism of other metals essential for bone health [ 9].