Lithium ionophore VIII – High Purity for ISE | Selectoprobe

References

Mikhelson K N, Bobacka J, Ivaska A, et al.Selectivity of Lithium Electrodes:  Correlation with Ion−Ionophore Complex Stability Constants and with Interfacial Exchange Current Densities, 2002, 74(3):518-527; DOI: 10.1021/ac0155660.

References

Albero, M. Isabel et al. Novel flow-through bulk optode for spectrophotometric determination of lithium in pharmaceuticals and saliva . Sensors and Actuators B-chemical ，2010，145 : 133-138.

Abstract

A new flow-through spectrophotometric bulk optode for the determination of lithium is reported. The optode membrane incorporates a lipophilic pH indicator (chromoionophore XIV), a lipophilic neutral ionophore (lithium ionophore VIII) and potassium tetrakis[3,5-bis(trifluoromethyl) phenyl] borate (ionic additive) as active constituents in a plasticized poly(vinyl) chloride membrane, entrapped in a cellulosic support. The composition of the membrane was tested using two different plasticizers. The optode was incorporated in a flow-injection system optimized for the determination of lithium. The analytical performance of the optode was evaluated, obtaining a linear concentration range of two decades of concentration (1 × 10⁻⁴ to 1 × 10⁻² M), a limit of detection of 1.4 × 10⁻⁴ M, a fast sample throughput (25–4 samples h⁻¹) and good reproducibility and selectivity. The sensor was seen to exhibit a fully reversible response. The proposed FI method is applied to the determination of lithium in pharmaceuticals and human saliva with satisfactory results.

Lithium ionophore VIII | C48H83N3O6 | CID 4149317 - PubChem (nih.gov)