Determination of lead ions using an diantipyrylmethane-based electrode

Tataeva, S. D.; Магомедов, К. Э.

doi:10.1134/s1061934816110149

Cited by 5 publications

(1 citation statement)

References 9 publications

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“…The membrane cocktails were prepared by dissolving appropriate amounts of PVC, plasticizer, ionophore, and ion exchanger in THF. The percentage of "dry" content in the cocktails was 15% [47]. To obtain the membranes, the cocktails were stirred for 30 min using Mixing device LOIP LS-220 shaker from "Laboratory Equipment and Instruments", (St. Petersburg, Russia) and then cast on glass Petri dishes.…”

Section: Sensor Fabricationmentioning

confidence: 99%

The Ionic Associate of Metamizole as an Electrode-Active Component of a PVC Plasticized Membrane Electrode

et al. 2022

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The technology for manufacturing a film membrane of the metamizole-selective electrode containing ion associate metamizole-octadecylammonium ODAH+MT− as an electrode active component (EAC) has been proposed. The main potentiometric characteristics of the metamizole-selective electrode have been determined. The expediency of the proposed design of the metamizole selective electrode for the determination of metamizole in dosage forms has been substantiated. The best composition of the membrane (wt.%) of the metamizole-selective electrode has corresponded to: ODAH+MT−—5.3; 2-nitrophenyloctylether—63.1; poly(vinyl chloride)—31.6. Electrode-active component in the membrane phase functions as an ion associate ODAH+MT−. Potentiometric characteristics of metamizole-selective electrode have been determined, which corresponded to: linear range 1 × 10−2–1 × 10−4 with limit of detection 4.58 × 10−5 M, electrode function slope −48.5 mV/dec., working interval pH 4.5–7.3, response time 60 s. The potentiometric coefficients of selectivity of the metamizole-selective electrode with respect to various ions have been determined. The possibility of determining metamizole in a medicinal product has been tested. The results of the analyses show good agreement between the two methods (relative error less than 7.0%) with coefficients of variation less than 5% for MT-SE and iodometric methods.

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Section: Sensor Fabricationmentioning

confidence: 99%