FIELD: analytical methods.
SUBSTANCE: invention is dealing with quantitative assay of β,β'-dihydroxydiethyl sulfide in aqueous matrices encountered in mustard gas disposal processes as well as in environmental monitoring. Compound to be assayed is chemically modified via alkyl halide-mediated alkylation reaction in presence of N,N,N-tributyl-N-benzylammonium chloride under heterophase conditions: 40% sodium hydroxide aqueous solution/benzene at 50±5°C for 40±1 min to form chromatography-susceptible derivatives. Sensitivity of determination is 1·10-5 mg/mL at determination error not higher than 25%.
EFFECT: increased determination accuracy.
6 dwg, 1 tbl
