Tracer dyes have long been used to follow the flow of underground streams. It should be administered in small amounts, concentrate in the areas of interest, and have a short half-life. radioactive tracer a radioactive isotope replacing a stable chemical element in a compound (said to be radiolabeled) and so able to be followed or tracked through one or more reactions or systems by means of a radiation detector; used especially for such a compound that is introduced into the body for study of the compound's metabolism, distribution, and passage through the body. There may be new information. Chemical tracer | Article about chemical tracer by The Free Dictionary. A tracer test involves the use of some chemical tracer that can be detected within the reservoir fluids in very small concentrations. Do not get Tracer Topical Suspension in your eyes, mouth, or vagina. Thanks to these radioactive isotopes it is now possible to follow the path of a single atom or chemical element around the body without disturbing its physical, chemical or biological behaviour. an inquiry sent out in … Stable or radioactive isotopes used for studying the fate of a molecule in physical, chemical or biological processes are called tracer element and the methods for such studies are called tracer techniques. A detector is moved along the ground above where the pipe What is Trace Analysis? Table 1 lists the most frequently used chemical water tracers. It provides a more precise image and is used frequently in oncology with Flourine-18 as the tracer. A trace element is a chemical element whose concentration (or other measure of amount) is very low (a "trace amount"). The diffusion coefficient was found to be determined by the volume fraction accessible to the spherical tracers (φa) independent of the gel structure or the tracer size. Positron emission tomography, or PET, represents the latest technology to use radioactive tracers. Ever since the 1934 discovery of artificial radioactivity, doctors have been armed with a panoply of radioactive isotopes for use as markers or tracers. Find out information about chemical tracer. A radioactive tracer is a chemical compound in which one or more atoms have been replaced by a radioisotope. PET is also used in cardiac and brain imaging with carbon-11 and nitrogen-13 radioactive tracers. on transparent paper 3. a person whose work is tracing lost or missing articles, persons, etc. a person who traces missing persons or property and especially goods lost in transit. Radioactive tracers can be used in both medicine and industry.. How are Radioactive Tracers used in Industry?. A tracer having chemical properties similar to those of the substance with which it is mixed Explanation of chemical tracer. Since the injected CO 2. originates from the same reservoir to which it is being re-injected, a tracer substance was needed in order to enable investigating EGR, flow paths within the reservoir, the partitioning behaviour of the CO 2 and CH 4 and indirectly monitoring the breakthrough moment of injected CO 2.