[Use of temperature coefficients of Kovach indexes in the identification of barbiturates]

The conditions of direct gas chromatographic assessment of barbiturates in reference solutions and cadaveric material extracts were analyzed with the aim of their unification. Along with the Kovach indexes, their temperature coefficients seem promising for the identification of barbiturates. Critical parameters of the evaporator temperature regimen were established, that may be used for barbiturate identification as well. The threshold values of gas chromatographic detection of phenobarbital, barbital, etaminal, hexenal, quietal, and hexobarbital were determined.