Sentences with phrase «isotopic tracers»

By using isotopic tracers called stable isotopes, researchers showed that seabirds feeding in areas rich in sulfate (a chemical that is an important food for sulfate - reducing bacteria that help break down organic matter) had high levels of mercury.

Ecologists can now combine classic stable istopic tracers with any number of parameters, like temperature range, salinity, or newly discovered isotopic tracers.

Not exact matches

Low background atmospheric concentrations, together with well - known and often distinct isotopic characteristics (variants of lead with different atomic weights) of industrial sources make lead an ideal tracer of industrial pollution.

The tracers, which have been tested both in the laboratory and the field, are based on the distinctive isotopic and geochemical signatures of two elements, boron and strontium, found in coal ash effluent.

Conservative tracer studies using stable oxygen isotopic data from 307 sites show that while the entire surface of this area receives abundant freshwater from meteoric sources, freshwater from sea ice melt is most closely linked to the areas of carbonate mineral undersaturation.

Have you any tracer analysis showing the movement of isotopic carbon varieties into buried sediment?

Using isotopic and chemical tracers, the researchers estimate that the CO2 had been mineralized into benign and stable carbonate minerals in the space of just two years.