Sentence examples for compounds were present from inspiring English sources

Toxicologists in 1933, when Christie wrote the story, were probably using chemical reactions that give characteristic colour changes when certain compounds were present.

The compounds were present in both layers at several hundred parts per billion.

These compounds were present mostly in the aboveground parts of the plant.

All compounds were present in influent grey water in μg/l range.

Weak peaks in the 1950 1850 cm-1 region indicates that organic compounds were present as well.

During S2 stage, 70 compounds were present in BA-370, 68 in AM-157 and 58 in IR-64.

X-ray photoelectron spectroscopy analyses revealed that Y(OH 3/Y2O3 compounds were present in the films.

Exposure measurements confirmed that all three compounds were present in the serum at least at clinically effective concentrations.

It specialized in analyzing gases thrown off by oil drilling platforms, set up around the world, to determine if valuable compounds were present.

This hindered the search for compounds in data bases; as many compounds were present as mono-, di- and tri-TMS forms [10].

If radical-scavenging compounds were present in the tissue, less formazan blue would be formed, thus decreasing the absorption at 570 nm.