Radioassay is a laboratory technique used to measure the presence and quantity of a substance by detecting the radiation emitted by a radioactive isotope present in the sample. In radioassay, the sample is mixed with a radioactive tracer molecule, which emits radiation that can be measured with a detection instrument such as a Geiger counter or scintillation counter.
The radioactive tracer molecule can be a radioisotope of the same element as the sample being measured, or it can be a different element that is chemically similar to the sample. The radioactive tracer is usually added in a known amount, and the amount of radiation detected is proportional to the amount of sample present in the original sample.
Radioassay has a wide range of applications in chemistry, biology, and medicine. It is used to measure the concentrations of drugs, hormones, and other molecules in blood and other bodily fluids. It is also used to detect and measure environmental pollutants, such as heavy metals and pesticides, in soil and water samples.
Sunday, March 12, 2023
Radioassay
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