FIELD: chemistry.
SUBSTANCE: described is a method for spectrophotometric determination of metal cations in aqueous solutions using photochromic organic compounds selected from spiropyrans and chromenes, the method being based on placing ashless filter paper into a metal salt solution, placing said paper into acetonitrile after drying, holding said paper therein and removing it, and adding a solution of a photochromic compound in acetonitrile to the obtained solution of metal ions.
EFFECT: simple method which does not require synthesis of water-soluble photochromic functionalised compounds or polymers and enables to use a wide range of already synthesised photochromic spiro compounds and chromenes to determine content of metal ions in aqueous solutions.
1 tbl, 9 ex, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF SPECTROPHOTOMETRIC IDENTIFICATION OF METAL IONS | 2012 |
|
RU2526176C2 |
| 1,3,3-TRIMETHYL-5-METHOXY-6´-BROMO-8´-[(Е)-2-(1´´,3´´,3´´-TRIMETHYL-5-METHOXY-3H-INDOLIUM- 2´´-YL)VINYL]-SPIRO[INDOLINE-2,2´-2H-CHROMENE] IODIDE | 2022 |
|
RU2786996C1 |
| 5-FORMYL-SUBSTITUTED INDOLINE SPIROBENZOPYRANS AND METHOD OF PRODUCING THEM | 2008 |
|
RU2358977C1 |
| PHOTOCHROMIC 5'-VINYL-6-NITRO-SPIROBENZOPYRAN DERIVATIVES AND PRODUCTION METHOD THEREOF | 2011 |
|
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| PHOTOCHROMIC DERIVATIVES OF 5'-HYDROXYMETHYL-6-NITRO-1',3',3'-TRIMETHYLSPIRO[2N-1-BENZOPYRAN-2,2'-INDOLINE] | 2019 |
|
RU2694904C1 |
| PERCHLORATES 1,3,3-TRIMETHILSPIRO[CHROMENE-2,2'-INDOLINE] WITH PHOTOCHROMIC PROPERTIES | 2016 |
|
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| ZINC DIMERIC COMPLEXES OF CROWN-CONTAINING STYRYL PHENANTHROLINES AS OPTICAL SENSORS ON CATIONS OF ALKALI-EARTH AND HEAVY METALS AND METHOD OF THEIR OBTAINING | 2012 |
|
RU2516656C1 |
| METHOD OF METAL POWDER ELECTROCHEMICAL PRODUCTION | 2013 |
|
RU2557398C2 |
| METHOD OF PRODUCING CATALYST FOR PROTIUM-DEUTERIUM ISOTOPIC EXCHANGE | 2011 |
|
RU2464094C1 |
| METHOD OF PRODUCING CATALYST FOR PROTIUM-DEUTERIUM ISOTOPIC EXCHANGE | 2011 |
|
RU2481155C2 |
