以三种新的二苯基氧膦衍生物为载体 ,制成PVC膜化学传感器 ,研究了PVC膜对UO2 + 2 的电位响应特性。在pH 3 .0的0 .1mol/Ltris缓冲液中 ,以BDPPM为载体 ,考察DOP为增塑剂的电极对UO2 + 2 的电位响应 ,线性范围为 3 .2× 10 - 6 ～ 3.0× 10 - 2mol/L ,响应斜率为 2 9± 0 .6mV/dec,响应时间t90 % 小于 3.3min。 Three novel diphenylphosphine oxide derivatives were used as carriers to prepare PVC membrane chemical sensors. The potential response of PVC membrane to UO2 + 2 was studied. The potential response of UO2 + 2 electrode with DOP as plasticizer was investigated in 0.1 mol / L Tris buffer at pH 3.0 with BDPPM as carrier. The linear range was 3.2 × 10 -6 ~ 3.0 × 10 - 2mol / L, response slope of 29 ± 0.6mV / dec, response time t90% less than 3.3min.