FIELD: metal sorbents.
SUBSTANCE: invention relates to preparation of chelating polymer sorbents and can be used in analytical chemistry and environmental protection sphere to recover, separate, and concentrate heavy and rare metals from natural and industrial waters. Sorbent represents oligomer containing bis(pyrazole-1-yl)methane fragment of general formula: 
wherein n denotes degree of polymerization; R (side substituents) are hydrogen atoms or alkyls; X is bridge linkage, notably bond or group (CH2)m with m=2-6, p-phenylene, or 4,4'-diphenylene.
EFFECT: increased sorption characteristics with regard to lanthanide and heavy metal ions.
2 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING (3,5-DIMETHYLPYRAZOL-4-YL)METHANE | 2011 |
|
RU2456274C1 |
| FIBER SORBENT | 2017 |
|
RU2653037C1 |
| N-SPACER-CONTAINING 3,6-BIS-β-DICARBONYL-SUBSTITUTED CARBAZOLES WITH FLUORINATED SUBSTITUTES, FOR USE AS MARKERS AND COMPLEXONS | 2019 |
|
RU2709194C1 |
| METHOD OF PRODUCING COMPLEXING SORBENT (VERSIONS) AND USE THEREOF FOR X-RAY FLUORESCENCE DETERMINATION OF HEAVY METALS IN WATER | 2011 |
|
RU2472582C1 |
| METHOD OF PRODUCING SULPHUR-CONTAINING SORBENTS FOR REMOVING HEAVY METALS FROM WASTE WATER | 2010 |
|
RU2475299C2 |
| METHOD OF EXTRACTING IONS OF HEAVY METALS FROM AQUEOUS SOLUTIONS | 2012 |
|
RU2495830C1 |
| QUATERNISED POLYBENZIMIDAZOLE | 2011 |
|
RU2575849C2 |
| 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 PRODUCING SORBENT FOR DICHROMATE IONS | 2015 |
|
RU2596256C1 |
| METHOD FOR EXTRACTING CHLORIDE-ION FROM NITROGEN-ACUTE TECHNOLOGICAL SOLUTIONS OF RADIOCHEMICAL MANUFACTURE | 2018 |
|
RU2678027C1 |
