三氟乙酰对癸基苯为中性载体的碳酸根离子选择电极的制备和应用

摘要

PVC membrane carbonate ion electrode with trifluoroacetyl-p-decylbenzene (TFADB) as neutral ionosphere.Tridodecylmethylammonium chloride (TDMACL)as active, and didecylphthalate+dibenzyl ether (DDP+DBE) as plasticizing solvent was prepared and its lifetime in the continuous monitoring system was longer than three months.Determination of carbonate in a series of model serum samples and aqueous solutions samples by the methods of the control pH and known dilution-standard addition has been developed.%实验比较了多种膜组分的性能，制得了有较长使用寿命的三氟乙酰对癸基苯为载体的PVC膜碳酸根离子电极。适当增大膜中载体的含量，采用亲脂性强的增塑剂并加入适量增水性溶剂，有利于延长电极的使用寿命和增强抗亲脂性阴离子干扰的能力。已利用此种膜电极，以控制pH标准比较法测定了模拟血清和质控血清中的碳酸根，并以已知稀释—标准加入法测定了碳酸盐型卤水中的碳酸根。