Systematic procedure for the identification of dangerous drugs, poisons, and narcotics by ultraviolet spectrophotometry

Systematic identification of unknown drugs in powder form by means of ultraviolet spectrophotometry in forensic toxicology

“…When one Keydex analysis points out four serial numbers, we can still compare the overall shape of the spectra of the selected numbers with the spectrum of the unknown. To reduce the influence of concentration on the shape of U.V.-curves, a log absorbance plot vs. wavelength may be introduced (1).…”

“…Assay results on various commercial samples were reported. 1 To whom all correspondence should be addressed.…”

Rapid Gas Chromatographic Method for Screening of Toxicological Extracts for Alkaloids, Barbiturates, Sympathomimetic Amines, and Tranquilizers.

“…Traditionally toxicological extracts have been screened for nonvolatile organic compounds by the tedious process of systematic color and crystal tests (17). Ultraviolet absorption and its change with pH have been used extensively as a systematic approach to the presumptive identification of compounds to which they are applicable (5,16). Serious limitations are imposed, however, on the use of ultraviolet absorption for the examination of mixtures, because a composite spectrum of all absorbing compounds is obtained.…”