isotopic tracer


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isotopic tracer

[¦ī·sə¦täp·ik ′trā·sər]
(chemistry)
An isotope of an element, either radioactive or stable, a small amount of which may be incorporated into a sample material (the carrier) in order to follow the course of that element through a chemical, biological, or physical process, and also follow the larger sample. Also known as isotopic indicator; isotopic label; label; tag.
References in periodicals archive ?
The integrity of the coating could be monitored by using either a single isotopic tracer such as [.
It was in this respect that the work in Marion's laboratory differed from most of the isotopic tracer work going on in other laboratories.
Without the isotopic tracer, it would have been difficult to refute this hypothesis.
This method involves labelling a mineral nutrient pool with an isotopic tracer and then measuring the changes with time of the amounts of the labelled nutrient and the isotopic ratio in the labelled nutrient pool.
After a time, a rat could be killed and its body fat analyzed for hydrogen-2, which would have acted as an isotopic tracer, indicating the types of reactions that fat molecules underwent.
The company's unique, patented isotopic tracer technology tracks dynamic changes in key biochemical pathways that identify the complex biological processes underlying disease to predict clinical outcome.
1 Type of procedure This project will require the uniform labelling of the starch in a food plant with 13C to be used as an isotopic tracer of dietary starch.
15] addition, sampling frequency was adjusted to reflect differences in the anticipated turnover rates of isotopic tracer in bio tic components.
Further, their comment regarding a concern for using an isotopic tracer close to its expiration date only emphasizes the advantages of nonisotopic signals.
Thus, the proposed project will use a synergy of experimental, analytical and computational techniques to test whether the isotopic fractionation of oxygen in phosphate can be used as an isotopic tracer in acidic systems.
The new project will use isotopic tracers to study how the chemistry of streams is controlled, and how it varies with rainfall and the creation of new pathways.
One of the instrument's objectives is to address "carbon chemistry through a search for organic compounds, the chemical state of light elements other than carbon, and isotopic tracers of planetary change," according to the JPL mission site.