For solution light absorbance, molecule and solvent extinction coefficient A times solution light-path length L times molecule concentration c equals logarithm of transmitted-light percent T {Beers law} {Beer-Lambert law}: A*L*c = log(T). Molecule and solvent extinction coefficient is molar absorptivity. Outer-shell electron transitions are at ultraviolet and visible wavelengths. People know substance extinction coefficients and molar absorptivities, which depend on outer-shell electron-transition energies and probabilities. If molar absorptivity is high, sensitivity is high. Method can also use integrated absorption coefficient or oscillator strength.
Physical Sciences>Chemistry>Analytical Chemistry>Light Intensity
5-Chemistry-Analytical Chemistry-Light Intensity
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Date Modified: 2022.0224