Analytical optoacoustic spectrometry. Part II. Ultraviolet and visible optoacoustic spectra of some inorganic, biochemical and phytochemical samples

摘要: Some preliminary studies concerned with the application of optoacoustic spectrometry to chemical analysis are described and modifications made improve performance spectrometer that was discussed in Part I this series reported.This instrument has been used investigation a variety sample types; several inorganic species, including rutile anatase titanium(IV) oxide, organometallic water-sensitive compounds, have examined spectra obtained from haemoproteins biological origin botanical samples. Where comparisons possible by using similar those use conventional transmission or reflectance spectrometry. In general, however, advantage requirement only small (microlitre microgram) amounts sample. Spectra fresh leaf tissue indicate particular over techniques for heterogeneous samples type it is generate separate different compounds observing phase-delayed mode; effect can be examination surface layers without interference substrate material.