报道了两种９－冠－３衍生物的合成，并以合成的化合物作载体研制了对锂离子响应的ＰＶＣ膜电极。以乙基－９－冠－３为载体的锂离子电极的能斯特响应为１０×１０－１～５２×１０－５ｍｏｌ／Ｌ，斜率为（５７４±０３）ｍＶ／ｐ［Ｌｉ］（２５℃），检测下限为２４×１０－５ｍｏｌ／Ｌ。电极具有良好的稳定性和重现性，用于实际样品测定，结果满意 The synthesis of two 9-crown-3 derivatives has been reported and the PVC-membrane electrode responsive to lithium ions has been developed using the synthesized compounds as carriers. The Nernst response of lithium-ion electrode with ethyl-9-crown-3 as carrier was 1.0 × 10-1 ~ 5.2 × 10-5mol / L with a slope of (574 ± 03) mV / p [Li] (25 ℃), the detection limit was 24 × 10-5mol / L. The electrode has good stability and reproducibility, for the actual sample determination, the results are satisfactory