Volume 19, Issue 2 (April 1974)
Identification of Drugs and Other Toxic Compounds from Their Ultraviolet Spectra. Part I: Ultraviolet Absorption Properties of Sixteen Structural Groups
The fully automatic recording spectrophotometer became a basic instrumental necessity in toxicology and crime laboratories a few years after being marketed. About the same time the infrared spectrophotometer became prominent as an analytical instrument, and indeed infrared spectrophotometry became the most specific method of identification available in most laboratories analyzing organic compounds during the sixties. An enormous amount of literature has been devoted to the interpretation of infrared spectra. Since absorption bands in the infrared region are sharper and more numerous than in the ultraviolet (UV) range, little attention has been given to practical approaches to interpretation of UV spectra. The fact that many compounds have similar and nearly identical spectra can be used as an advantage, since fewer standard spectra are needed than there are compounds to be identified. Matching the spectrum of an unknown to that of a known is in many instances simpler than the same process using infrared data.