Cattrall等曾报导用Allqat 336S的四氯络铁(Ⅲ)酸盐为电活性物质制成铂基PVC膜涂层电极,并用于测定铁矿石中的铁含量。惜所用季铵盐碳链较短,检测下限欠佳。本文报导用长键季铵盐作活性物质,以制备其内导体系为溶液接触型的PVC膜四氯络铁(Ⅲ)阴离子选择电极的研究结果。 Cattrall et al. Reported that platinum-based PVC membrane coated electrodes made from Allqat 336S tetrachloroiron iron (III) as an electroactive material were used to determine the iron content in iron ore. Unfortunately, the quaternary ammonium carbon chain is shorter, lower detection limit is not good. In this paper, the long-chain quaternary ammonium salt is used as the active material to prepare the research result of the PVC-membrane tetrachloro-iron (III) anion selective electrode whose inner conductor system is a solution contact type.