specific activity
Defined individual endeavor
Specific activity measures the activity of a substance per unit of something—typically mass or volume.
In biochemistry, it's the enzyme activity per milligram of protein, indicating purity: The specific activity increased with each purification step.
In radiochemistry, it's the radioactivity per unit mass of a radioactive material.
Higher specific activity generally means greater purity or potency.
- curieUnit of radioactive decay
- radioactive decayUnstable atoms releasing energy
- spectrophotometryMeasuring light wavelength absorption
- half-lifePeriod for fifty-percent reduction
- reaction rateSpeed of chemical change
beta decay · active site · mass spectrometry · electrophoresis · chromatography · calorimetry · turnover · titration · Geiger counter · assay · radioactivity · uptake · fraction · substrate · biochemistry · enzyme · isotope · measurement
- Enzymologysubstrate, active site, catalysis, Michaelis-Menten, turnover number
- radioactivityradioactive decay, radioactive isotopes, radioisotopes, radionuclides, half-life
- Isotope Tracerstracer, radioisotope, isotope, tritium, deuterium
- radiation dosimetrygray, rad, rem, roentgen, curie
- radioactive decayalpha decay, beta decay, gamma decay, half-life, decay rate
- nuclear physicsnuclear energy, fission, nuclear fission, neutron, proton
activity, specific, specify, specified, specifically, specification, activation, nonspecific, specificity