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用合成的新材料1,1,1—三[1′-(2′-氧杂-4′-氧代-5′-氮杂-5′-辛基)十三烷基]丙烷为中性载体,磷酸三[2-乙基己基]酯(TEHP)为增塑剂,制成了三种锂的电化学传感器:PVC 膜电极、涂碳电极和锂离子敏感场效应晶体管(Li ISFET),比较了它们的性能。PVC 膜电极的线性响应范围是5×10~(-5)～1mol·dm~(-3)(LiCl),涂碳电极和 Li ISFET 的线性响应范围分别为10~(-4)～1mol·dm~(-3)和10~(-3)～1mol·dm~(-3)。三种锂的电化学传感器中,PVC 膜电极的选择性较好,K_(Li,Na)~(Pot)为4×10~(-2),K_(Li,K)~(Pot)为8×10~(-3),Li ISFET 的选择性较差,K_(Li,N?)~(Pot)为9·6×10~(-2),K_(Li,K)~(Pot)为1.6×10~(-2)。
With the new synthesis of 1,1,1-tris [1 ’- (2’-oxa-4’-oxo-5’-aza-5’-octyl) tridecyl] propane as neutral Three kinds of lithium electrochemical sensors, PVC membrane electrode, carbon-coated carbon electrode and lithium-ion-sensitive field-effect transistor (Li ISFET), were prepared by using TEHP as plasticizer. Compare their performance. The linear response range of PVC membrane electrode is 5 × 10 -5 mol to 1 mol · dm -3, and the linear response range of carbon electrode and Li ISFET is 10 -4 to 1 mol · dm ~ (-3) and 10 ~ (-3) ~ 1mol · dm ~ (-3). Among the three kinds of lithium electrochemical sensors, the selectivity of PVC membrane electrode is better, the K_ (Li, Na) ~ (Pot) is 4 × 10 -2, and the K_ (Li, K) × 10 ~ (-3). The Li ISFET has poor selectivity, K_ (Li, N ×) ~ (Pot) is 9.6 × 10 ~ (-2) 1.6 × 10 ~ (-2).