Radioactive isotopes as tracers

what is radio active isotopes
uses of various fields in tracers
disadvantages of tracers
what are radioactive tracers
application in research fields in tracers
application in agriculture fields

1. Isotopes as Tracers K. Revathi 20-MY-14 NGm college,pollachi

2. Content Introduction Uses Advantages of tracers Disadvantages of tracers

3. what are radioactive tracers Radio active isotopes have a property due to which they can easily be detected and estimated quantitatively. As such , if we want to trace the course of an atomic species in a chemical or a physical change, we mix a small quantity of the radioactive isotope with non-radioactive isotope. Here we say Radioactive tracer or Radioactive indicator or simply as Labelled or Tagged element.

4. Uses of tracers Uses of tracers in studying reaction mechanisms a)Photosynthesis b)Hydrolysis of ester

5. a)Photosynthesis The Mechanism of the process of photosynthesis taking place in plants has been studied by reacting carbon dioxide containing oxygen with hydrogen. In this mechanism has been studied by using Oxygen isotope.

6. b)Hydrolysis of ester Mechanism of ester hydrolysis has been studied by using oxygen isotope .

7. Uses of tracers Uses of tracers in the diagnosis of diseases: a) Location and detection of brain tumour b) Circulation of blood c) Pumping action of heart d) Functioning of thyroid gland e) Disorders associated with pregnancy f) Test for cancer growth

8. a) Location and detection of brain tumour Labelled iodine has been used to locate and detect the presence of tumour.

9. b) Circulation of blood Radio sodium, has been used to study cases of restricted circulation of blood. By moving the detector to different parts of the body, the position of restriction can be located and the necessary treatment applied.

10. c) Pumping action of heart Pumping action of heart has been studied by using radio sodium or radioiodine.

11. d) Functioning of thyroid gland Radioisotope of iodine, has been used. It decays beta rays. Detection of these rays gives an information regarding the functioning of the thyroid gland .

12. e) Disorders associated with pregnancy Tracer ion has been used in studying the disorders associated with pregnancy.

13. f)Test for cancer growth Co emits high energy gamma rays which are used for testing deeply seated cancer growth.

14. Uses of tracers in industry Determination of the wear of piston rings. Self – diffusion of metals Uniform mixing As Catalyst Mechanisms of reactions

15. Uses of tracers in agriculture

16. Uses of tracers in analytical chemistry