PROCESS OF DETECTION OF HYDRAZIN FUEL IN SOIL Russian patent published in 1996 - IPC

FIELD: instrumentation. SUBSTANCE: sample of soil is taken, soil suspension with acetone is prepared with subsequent filtration and separation into solid and liquid phases. Liquid phase is brought into contact with mixture of 1% aqueous solution of silver nitrate and 1% aqueous solution of nitrate of mercury protoxide taken in volumetric ratio 9-9:5:1. Volumetric ratio of liquid phase and mixture of 1% aqueous solutions amounts to 30:1 and presence of asymmetric dimethylhydrazine in soil is evaluated by change of coloring of liquid phase. EFFECT: enhanced reliability of process. 2 tbl