FIELD: analytical methods in ecology.
SUBSTANCE: method comprises adding test sample to silica gel preliminarily treated with cetylpyridinium chloride and then with phenylfluorene dissolved in water-ethanol medium. Sample is treated at pH 4-5 in determination of chromium and at pH 7-8 in determination of manganese. In order to calculate content of ions, diffuse reflection values are measured on spectrophotometer at wavelengths 530 and 590 nm, respectively for chromium and manganese.
EFFECT: achieved 25-fold concentration of Cr(III) and Mn(III) ions and separate determination thereof in case of their common presence.
2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF CONCENTRATING AND DETECTING COPPER, LEAD AND CADMIUM | 2008 |
|
RU2361660C1 |
| METHOD FOR DETECTING PALLADIUM | 2005 |
|
RU2287156C1 |
| METHOD OF DETERMINING BISMUTH (III) | 2010 |
|
RU2444403C1 |
| PHOTOMETRIC METHOD OF GERMANIUM IDENTIFICATION | 0 |
|
SU1767398A1 |
| METHOD OF DETERMINING PALLADIUM (II) | 2010 |
|
RU2426986C1 |
| METHOD FOR DETERMINATION COBALT CONTENT IN WATER | 0 |
|
SU1800328A1 |
| INDICATOR COMPOSITION FOR JOINT DETERMINATION OF COPPER(II) AND MANGANESE(II) IN AQUEOUS SOLUTIONS | 2004 |
|
RU2253864C1 |
| METHOD OF CONCENTRATION AND SEPARATION OF IONS OF METALS | 2001 |
|
RU2192300C1 |
| GOLD DETERMINATION METHOD | 2005 |
|
RU2279060C1 |
| METHOD OF IRON DETERMINATION IN THE AQUEOUS SOLUTION | 0 |
|
SU1709195A1 |
