Sentences with phrase «oxygen and nitrogen isotopes»

The scientists collected seawater from various depths and measured the ratios of certain oxygen and nitrogen isotopes in the samples.
Phytoplankton prefer to consume nitrate with lighter oxygen and nitrogen isotopes, so they leave behind heavier isotopes; measuring these can reveal microbial activity in the environment.

Not exact matches

In the study, the researchers examined nitrogen and oxygen isotopes in N2O samples collected from permafrost peatland sites in northwestern Russia.
I joined the team and undertook isotopic work using oxygen, nitrogen and carbon stable isotopes to assess his geographical origin and also his diet.
What's Next: The team also is developing techniques that would work with other isotopes, including nitrogen and oxygen.
Isotope measurements that relate to geographical location, pollution and diet (strontium, nitrogen, oxygen, carbon and lead) were analysed in three locations on the skeleton of Richard III.
However, when measuring the isotopes in nitrate alone, the team found an unexpected imbalance in the ratio of heavy nitrogen and oxygen.
Alternative research shows how isotopes of oxygen can illustrate water sources and nitrogen isotopes can show up the protein source.
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