FIELD: analytical methods. SUBSTANCE: solution to be analyzed for trace concentrations of rhodium is treated by 2,2-dipyridyl to achieve its equilibrium concentration 5.10-3-3.10-2 M, than by hydrazine to its equilibrium concentration 0.5-2.5 g-ion/l, after which pH of solution is adjusted to 3.5-5.5, solution is heated, and intensity of emission is finally measured at 77 K. EFFECT: increased accuracy. 4 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DETERMINATION OF ANIONIC SURFACE-ACTIVE SUBSTANCES | 1992 |
|
RU2041460C1 |
| COMPOSITION FOR IDENTIFYING NITRATE-IONS IN SOLUTIONS | 1997 |
|
RU2141115C1 |
| REAGENT FOR COLORIMETRIC AND PHOTOMETRIC DETERMINATION OF NITRITES IN AQUEOUS SOLUTIONS | 1992 |
|
RU2038579C1 |
| METHOD OF DETECTION OF ALUMINIUM (III) AND MANGANESE (II) IN SOLUTIONS | 1993 |
|
RU2096764C1 |
| PROCESS OF DETERMINATION OF IRON (III) AND ALUMINIUM (III) IN ACID LIQUORS | 1993 |
|
RU2043629C1 |
| METHOD FOR DETECTION OF SILICON IN SOLUTIONS | 1992 |
|
RU2082964C1 |
| METHOD OF DETERMINING OSMIUM | 0 |
|
SU1233047A1 |
| METHOD OF PREPARING POROUS SILICON DIOXIDE MODIFIED BY PHOSPHORUS- MOLYBDENUM HETEROPOLYMER COMPOUNDS | 1998 |
|
RU2139243C1 |
| METHOD OF ANALYSIS OF AROMATIC HYDROXIDERIVATIVES | 1995 |
|
RU2078333C1 |
| METHOD OF DETERMINATION OF INTERMICCELAR OXYGEN IN SOLUTIONS OF CATIONIC SURFACTANTS | 0 |
|
SU1760444A1 |
