| 摘要 |
FIELD: analytical methods. ^ SUBSTANCE: in indicator composition for determining manganese(II), in particular, in waste waters and production solutions, containing 0.6% of sorbent, 0.05% of reagent, medium pH adjusting substance, and water, said sorbent is sulfate-form anionite (AN-31), said reagent is 4-(2-pyridylazo)resorcinol, and pH of medium is adjusted with 0.0035-0.004% of ammonia. Concentration of Mn2+ ions is measured spectrophotometrically in presence of above-defined indicator. ^ EFFECT: increased determination selectivity and accelerated analytical procedure. ^ 3 tbl |
