FIELD: measurement equipment.
SUBSTANCE: method consists in the fact that metals together with mercury are extracted into laminating system water-antipyrine-salicyl-sulphonic acid-potassium thiocyanate, lower phase of ionic organic liquid is formed, aliquot of which is applied on surface of graphite electrode, which is placed into three-electrode cell with 0.1 mole/l KSCN, without delay mercury accumulation potential is supplied -1.4 V for 30 seconds, and then in mode of anode reaming voltamperogram is requistered in square-wave mode within the limits of -1.20 to +0.20 V in the form of peaks of anode oxidation of zinc, cadmium, lead, copper.
EFFECT: invention makes it possible to detect low concentrations of zinc, cadmium, lead and copper, which makes it possible to perform monitoring in natural waters.
1 dwg, 2 tbl
