FIELD: analytical chemistry.
SUBSTANCE: invention relates to analytical chemistry and can be used in the determination of yttrium (III) in technological solutions, natural and man-made waters. The method for determining yttrium (III) includes preparation of a sorbent, extraction of yttrium (III) from a solution by a sorbent, conversion of yttrium (III) into a complex compound, separation of the sorbent from the solution, measurement of the luminescence intensity of the surface complex of yttrium(III) with 8-hydroxyquinoline-5-sulfonic acid and determination of the content of yttrium. Silica sequentially modified with polyhexamethylene guanidine and 8-hydroxyquinoline-5-sulfonic acid is used as a sorbent. The specified sorbent is introduced in a solution containing yttrium (III), having a pH of 7-8, mixed for 10 minutes. The luminescence intensity of the sorbent is measured at 485 nm, and the determination of the yttrium content is carried out according to a calibration schedule.
EFFECT: invention makes it possible to simplify the determination of the content of yttrium (III), reduce the detection limit.
1 cl, 1 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DETECTING ALUMINIUM (III) | 2008 |
|
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| METHOD OF DETERMINING ALUMINIUM (III) | 2012 |
|
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|
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| METHOD OF ZINC (II) IDENTIFICATION | 2012 |
|
RU2518967C1 |
| METHOD OF DETERMINING COBALT (II) | 2011 |
|
RU2456592C1 |
