REACTIVE INDICATOR TOOLS FOR RAPID WATER TESTS

Densitometric characteristics of rapid tests based on reactive indicat or papers for determining bismuth, hydrazine, iron(II, III), indium, c admium, copper, nitrate, nitrite, mercury, lead, chlorine, chloride, c hromate, and zinc were obtained using an electron reflectance miniphot ometer with light-emitting diodes (567 +/- 15 nm and 660 +/- 10 nm) an d a modified device for concentrating 10(-7)-10(-5) wt % components in aqueous solutions. The values of RSD for replicate measurements at n = 7 are 1.8-8%.