Sentence examples for metals at toxic from inspiring English sources

It was also observed that the mature compost from these feedstocks did not have heavy metals at toxic levels.

The application of fungicides containing Cu and Zn in vineyards can lead to accumulation of these metals at toxic levels.

A potential drop of soil pH from 5 to 2 may occur with serious consequences for paddy field and watercourses (huge acidity and dissolved metals at toxic levels) if pyrite is exposed to oxidation conditions (e.g. drainage system lowering water level below pyrite position).

From Table 5 it can be observed that the transfer coefficients must-canes (TFmc) and wine-must (TFwm) has subunits values, this fact can be explained through the intent of vine to accumulate metals, especially toxic metals at aerial parts level (leaves, canes).

Micronutrients interact with toxic metals at several points in the body: absorption and excretion of toxic metals; transport of metals in the body; binding to target proteins; metabolism and sequestration of toxic metals; and finally, in secondary mechanisms of toxicity such as oxidative stress.

Heavy metals are toxic at high concentrations and are high-frequency pollutants seen in municipalities and specific industries.

Nevertheless, many metals become toxic at high ion concentrations, because unlike toxic organic compounds, metals cannot be degraded or modified [1].

However, most heavy metals are toxic at higher concentrations.

Heavy metals at sufficient concentrations are toxic to Shk1 cells as they are to activated sludge microorganisms, and the exposure of Shk1 cells to heavy metal ions results in bioluminescence repression.

These mesostructures are densely coated with chelating ligand to permit ultra-fast, specific, pH-dependent visualization and the removal of toxic metals at sub-picomolar concentrations (∼10−11 mol dm−3) from aqueous media, including drinking water and a suspension of red blood cells, via a colorimetric signal visible to the naked eye, as well as via UV Vis reflectance spectroscopy.

Further studies aim at developing a quantitative model suited for studying interactions between essential and toxic metals at the level of intestinal metabolism.