Identification of Some Organic Solvents During Regular Forensic Determination of Alcohols in Blood and Bioliquids

Some mixed organic solvents (MOS) can be detected preliminary during regular gas-chromatography (GC) forensic analysis of alcohols content in human blood. Some alcohols present in MOS can form detectable concentrations of volatile esters during the pre-treatment of blood samples according to the alcohol content determination protocol and then they can manifest themselves through the corresponding GC responses recorded in the chromatogram. The ‘646’ and ‘647’ MOS form quite different patterns of GC, which can bring an expert to an assumption of their possible presence in the samples, which then should be verified by the corresponding more specific and quantitative methods.