FIELD: analysis of materials. SUBSTANCE: sample is injected into flow of nitric acid, xylenole orange is added into flow and presence of iron is detected photometrically. After this flow is heated up to 60-70 C and summary content of aluminium (3+) and iron (3+) is detected photometrically. EFFECT: expanded application field. 1 dwg, 2 tbl
Authors
Dates
1995-09-10—Published
1993-08-05—Filed