Application in industry：

In industrial activities, tracer atom provides the possibility to use a variety of high performance detection methods and automatic control methods of production process, which can overcome the difficulty of traditional detection methods. For example, in the petroleum industry, radionuclide tracer microspheres were used to map the water injection profile of water injection Wells, which contributed to the evaluation of the formation, adjustment of the injection water distribution and realization of oil production increase and stability. In the mechanical industry, krypton (85Kr) technology can be used to study mechanical wear and measure the maximum operating temperature and temperature distribution of moving parts that cannot be accomplished by other methods. In addition, this highly sensitive 85Kr leak detection method is also used in the detection of mechanical industrial products, mechanical parts and metal vacuum systems, as well as the detection of semiconductor devices in the electronic industry. In iron and steel industry, the corrosion degree of blast furnace wall can be measured by isotope tracer technique. Water conservancy projects can be used to detect the leakage of the dam.

Applications in environmental research：

Isotopic tracer technology can be used to study the distribution, migration and enrichment of pollutants in various media (hydrosphere, soil sphere, atmosphere, biosphere, etc.), and to study the temporal and spatial characteristics of pollutants from both static and dynamic aspects. For example, organic halogen compounds were labeled with long-lived radionuclides 36Cl to study their behavior in the environment. The transfer, methylation and environmental effects of mercury in the atmosphere, hydrosphere and biosphere were studied with enriched and stable 196Hg or 202Hg.

Applications in biomedicine：

It is mainly used in clinical judgment and medical research. For example, 2H and 10O double labeled glucose can be used to study the energy intake and consumption process of human body. The blood volume of human body can be studied with the method of 51Cr labeling. Thyroid function can be studied with 131l. Iron deficiency anemia can be studied with 58Fe. Glucose labeled with 18F can be used to study cerebral blood flow and its metabolic activities.

Applications in agriculture：

It is mainly used in the study of fertilization methods, ways and effects. The inhibition and killing effect of insecticide and herbicide on insects and weeds; Effects of plant hormones and growth stimulants on metabolism and function of crops; Effects of hormones, vitamins, trace elements, feeds and drugs on growth and development of livestock; In addition, due to the application of radioactive isotope 14C, the discovery of photosynthesis mechanism in nature is mainly applied in the study of fertilization methods, approaches and fertilizer effects. The inhibitory and bactericidal effects of insecticides and herbicides on insects and weeds. It was the application of radioisotope 14C that led to the discovery of the mechanism of photosynthesis in nature.