FIELD: liquid phase material analytical testing. SUBSTANCE: method comprises steps of depositing an admixture on a solid substrate from a solution by ion exchange adsorption concentration; immersing the substrate into a sample of the solution to be analyzed over 1.5-2 hours; using as the substrate monocrystal silicium with porous surface layer; after removing the substrate from the solution performing an analysis of the additives by mass spectrometry using different driving sources. EFFECT: enhanced accuracy of determination. 1 cl, 1 dwg, 2 tbl
Authors
Dates
1994-08-30—Published
1990-10-09—Filed