Lipophilic Lithium Ion Carrier in a Lithium Ion Selective Electrode

Article abstract of DOI:10.1021/ac50001a040

A lithium ion selective electrode was constructed with N,N'-diheptyl-5,5-dimethyl-N,N'-bis(3-oxapentyl)-3,7-dioxanonanediamide as a lithium carrier.Dioctyl azelate, tris(2-ethylhexyl)phosphate, and triisononyl trimelitate were used as plasticizers.Selectivity coefficients of 0.063, 0.104, 7.1E-3, and 2.5E-4 are reported for sodium, potassium, calcium, and magnesium, respectively, relative to lithium ion.A new and simpler procedure is reported for the synthesis of the lithium carrier.