Extraction of thiodiglycol from soil using pressurised liquid extraction

Thiodiglycol (TDG) is the predominant hydrolysis product of the chemical warfare agent sulfur mustard. The extraction of TDG was investigated using pressurised liquid extraction and the results compared for a variety of different solvents and soils. TDG was analysed underivatised by gas chromatography with flame photometric detection. A mixture of methanol–water (9:1), proved to be the most efficient extracting solvent for TDG at a temperature of 150°C and 10 MPa.