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
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RU2464094C1 |
[2-(AZOL-1-YL)ALKYLBENZIMIDAZOL-1-YL]ALKANOIC ACIDS AND ESTERS THEREOF, METHOD OF PRODUCING SAID COMPOUNDS (VERSIONS) AND GROWTH-REGULATING COMPOSITION BASED ON SAID COMPOUNDS | 2008 |
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Authors
Dates
2014-03-20—Published
2012-11-07—Filed