METHOD OF QUANTITATIVE DETERMINATION OF CYANIDES Russian patent published in 2003 - IPC

FIELD: analytical chemistry, quantitative determination of cyanide-anion in extracts won from water, soil, air samples, wash-off from surfaces of various objects. SUBSTANCE: method can also be employed in environmental monitoring, in measures protecting against weapons of mass destruction, in establishment of completeness of chemical decontamination and doing away with substances releasing cyanide-anions and in criminology. Method of quantitative determination of cyanides in water and water and alcohol samples includes treatment of sample with alkaline solutions of luminol, hemin and peroxide compound with subsequent measurement of intensity of chemiluminescence. Para-nitrobenzyldenide won as result of treatment of sample with para-nitrobenzyldenide is utilized in the capacity of peroxide compound. Treatment is conducted at 293 K in the course of one minute with volumetric ratio of solutions of sample, luminol, hemine and para-nitrobenzyldenide 1: 2: 1: 1. EFFECT: increased sensitivity of determination of cyanides. 1 cl, 4 dwg