In which technique is radioactivity detected by mixing the sample in a vial with a special fluid that contains compounds that emit light if struck by a beta particle? The amount of light emitted in the fluid is a measure of the amount of radioactivity in sample.
A)autoradiography
B)an NMR machine
C)liquid scintillation spectrometry
D)mass spectrometry
E)AFM

Question

Quizplus · Accepted Answer

Liquid scintillation spectrometry detects radioactivity by mixing the sample with a scintillation fluid that emits light when struck by beta particles. The amount of light emitted is proportional to the amount of radioactive material in the sample. Autoradiography uses photographic film to image the distribution of radioactivity in a sample, NMR and mass spectrometry are analytical techniques that do not directly detect radioactivity, and AFM is a microscopy technique for visualizing surfaces at the nanoscale that does not detect radioactivity.

In Which Technique Is Radioactivity Detected by Mixing the Sample