Subject
isotope application
27
tracer technique
19
isotope
17
radioisotope
13
radiopharmaceutical
11
labeled compound
10
stable isotope
10
radiochemistry
7
isotope effect
6
nuclear chemistry
6
radiation chemistry
6
isotope geochemistry
5
isotope ratio
5
PET (positron emission tomography)
4
isotope production
4
isotope separation
4
nuclear medicine
4
radionuclide
4
technetium
4
equilibrium
3
labeling
3
soil
3
alpha decay
2
autoradiography
2
beta decay
2
chemical analysis
2
comet
2
detector
2
dopamine
2
ecosystem
2
fractionation
2
glovebox
2
glucose
2
hydrobiology
2
hydrological cycle
2
isotope dating
2
kinetics
2
liquid scintillation counting
2
liquids
2
partitioning
2
plant
2
radioactivity
2
radioisotope generator
2
radiometry
2
scintillation counter
2
simulation
2
transpiration
2
uranium
2
vapor
2
water
2
more ...