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Glossary of Terms - R

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radiation constants
radiation counter
radiation detector
radiation spectrum
radiation
radiative absorption (in spectrochemistry)
radioactive tracer technique (in analysis)
radioactive tracer
radioanalytical chemistry
radioisotope
random error
random sample
range (in analysis)
range of measurement (of an analyser)
rate coefficient
rate constant
rate law (empirical differential rate equation)
rate of conversion
rate of formation
rate of migration (in electrophoresis)
rate of nucleation
rate of reaction
rate
ratio
raw coke
reactant
reaction chromatography
reaction stage
reaction time
reaction
reactive (reactivity)
reactive adsorption
real surface (interface) area
recovery
recrystallization
reduced adsorption
reduction
reference method
regression analysis
relative activity
relative adsorption
relative density
relative error
relative humidity
relative molecular mass
relative selectivity (in catalysis)
relative standard deviation
relative
repeatability
replication
report (in analysis)
representative sample
repulsive potential-energy surface
residence time
resin
resistance
resistivity
resolution (in gas chromatography)
resolution (in mass spectroscopy)
resolving power (in mass spectrometry)
resonance
retention temperature (in chromatography)
retention time (in chromatography)
retention volumes (in chromatography)
röntgen
rotational diffusion coefficient
rotator phase transition
rotatory power
rotometer (in atmospheric chemistry)
roughness factor (rugosity) (of a surface)


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