FIELD: ionometry.
SUBSTANCE: invention relates to ionometry and can be used in environmental, medical and industrial control of phosphate content in aquatic ecosystems, soil extracts, biological fluids and solutions of medical preparations. Disclosed is membrane of ion-selective electrode for determination of phosphate ions, which contains (wt%): 4.5 % of an electroactive component, which is an organotin compound of general formula R2SnX2, where R is octyl or 2-ethylhexyl, and X is chloride, bromide, iodide or hydrophosphate; 60.0 % of a plasticiser, which is ortho-nitrophenyloctyl ether; 35.0 % polyvinyl chloride; 0.5 % of a lipophilic additive which is potassium tetrakis(4-chlorophenyl)borate.
EFFECT: invention improves electroanalytical characteristics, such as selectivity, angular inclination of calibration curve, reproducibility and stability of electrode potential.
1 cl, 1 dwg, 2 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| MEMBRANE OF IONOSELECTIVE ELECTRODE TO DETERMINE CALCIUM IONS | 2018 |
|
RU2680865C1 |
| COMPOSITION OF ION-SELECTIVE ELECTRODE MEMBRANE FOR DETERMINATION OF CALCIUM IONS | 2020 |
|
RU2736488C1 |
| MEMBRANE OF ION-SELECTIVE ELECTRODE FOR DETERMINATION OF URANYL ION | 2022 |
|
RU2798100C1 |
| 2,4,6-TRIS[(2-DIPHENYLPHOSPHORYL)-4-ETHYLPHENOXY]-1,3,5-TRIAZINE AS ELECTRODE-ACTIVE SELECTIVE IONOPHORE FOR LITHIUM CATION IN PLASTICISED MEMBRANES OF ION-SELECTIVE ELECTRODES | 2016 |
|
RU2630695C1 |
| MEMBRANE OF AN ION-SELECTIVE ELECTRODE FOR THE DETERMINATION OF AN OCTAHYDROTRIBORATE ANION | 2016 |
|
RU2621888C1 |
| CADMIUM-SELECTIVE ELECTRODE | 2019 |
|
RU2712920C1 |
| COMPOSITION OF THE MEMBRANE OF THE ION-SELECTIVE ELECTRODE FOR THE DETERMINATION OF LEAD IONS | 2021 |
|
RU2762370C1 |
| COMPOSITION OF MEMBRANE ION-SELECTIVE ELECTRODE FOR DETERMINING ACTIVITY OF CALCIUM IONS IN AQUEOUS SOLUTIONS | 0 |
|
SU1155928A1 |
| ION-SELECTIVE ELECTRODE MEMBRANE FOR CADMIUM IONS DETERMINATION | 2018 |
|
RU2688951C1 |
| COMPOSITION OF MEMBRANE OF ION-SELECTIVE ELECTRODE FOR DETERMINATION OF ACTIVITY OF IONS | 1994 |
|
RU2083979C1 |
