FIELD: chemistry.
SUBSTANCE: invention relates to qualitative and semiquantitative detection of nickel (II) ions in aqueous solutions and can be used for rapid analysis of working solutions away from laboratory facilities. The indicator contains a modified matrix based on silica gel and an organic reagent. The modified matrix used is silica gel in OH- state, modified by trimethylammonium groups. The organic reagent is 1-(4-sulphophenyl)-3-methyl-5-(benzoxazol-2-ly) formazan and, additionally, aqueous ethanol solution with the following ratio of components, wt %: said silica gel 95.999-97.990, said organic reagent 0.001-0.040, aqueous ethanol solution - the rest.
EFFECT: easier and faster analysis, as well as accurate results at maximum permissible concentration at multiple excess of other metal ions.
2 ex, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| INDICATOR FOR CADMIUM (II) IONS IN SOLUTION | 2008 |
|
RU2368897C1 |
| METHOD OF DETERMINING CADMIUM (II) IONS IN SOLUTION | 2010 |
|
RU2429470C1 |
| METHOD OF DETERMINING LEAD (II) IONS IN SOLUTION | 2010 |
|
RU2441232C1 |
| METHOD OF PRODUCING SORPTION MATERIAL BASED ON SILICA GEL WITH IMMOBILISED FORMAZAN FUNCTIONAL GROUP | 2013 |
|
RU2520099C1 |
| REAGENT INDICATOR PAPER TESTS BASED ON CHROMOGENIC ION-EXCHANGE CELLULOSES AND METHOD OF MANUFACTURE THEREOF | 1997 |
|
RU2126963C1 |
| METHOD FOR METAL AMOUNT DETERMINATION USING POLYMETHACRYLATE MATRIX | 2015 |
|
RU2613762C1 |
| REAGENT INDICATOR TUBE BASED ON CHROMOGENIC DISPERSED SILICA | 2013 |
|
RU2521368C1 |
| 1-(2-HYDROHY-5-NITROPHENYL)-3-ETHYL-5-(BENZOXAZOLYL-2)FORMAZANE AS SELECTIVE AGENT IN SPECTROPHOTOMETRIC ANALYSIS AND CONCENTRATION OF LEAD | 0 |
|
SU1587047A1 |
| 1-(2Ъ-OXY-5Ъ-NITROPHENYL)-3-ISOPROPYL-5-(1ЪЪ-BENZYLBENZINIDAZOLYL-2")FORMAZAN AS SELECTIVE REAGENT FOR SPECTROPHOTOMETRIC IDENTIFICATION OF CADMIUM,ZINC,COPPER,MERCURY | 0 |
|
SU1342901A1 |
| METHOD OF DETERMINING COPPER | 2015 |
|
RU2599517C1 |
