INTRACAVITY POLARIZATION SPECTROMETER FOR THE DETERMINATION OF TRACE CONCENTRATIONS OF BIOMOLECULES IN TRANSPARENT LIQUIDS

An intracavity polarization spectrometer based on an argon laser with competing beams, which emits narrow lines in a spectral range from 275 to 529 nm, is designed to raise the sensitivity of the analysis of li quid-phase absorbents with broad absorption bands (primarily, biomolec ules). The limit of detecting the concentration of absorbing centers i s reduced to 10(-5) optical density units with an accuracy of measurin g trace concentration of at least 20%. A wide dynamic range of analysi s is ensured. The spectrometer is exposed to evaluation tests to deter mine trace concentrations of aminoacids in methanol.