涂丝型聚氯乙烯膜甲哌卡因选择电极的研制与应用

Preparation and application of coated wire polyvinyl chloride membrane mepivacaine selective electrode

报导一种以甲哌卡因与碘分子缔合物为电活性物的新型全固态PVC膜甲哌卡因涂丝选择电极,电极的线性响应范围为1.0×10-1~8.1×10-5mol·L^(-1),级差为57m V/pC,检测限为4.32×10-5mol·L^(-1)。该电极响应迅速,重现性好,用此电极以标准曲线法对盐酸甲哌卡因注射液含量进行了测定,此法简便,结果与药典法相符。

It reported a kind of mepivacaine association complex with iodine molecules electrically active new all-solid PVC mem-brane mepivacaine selective electrode coated wire,linear response range of the electrode is 1. 0 × 10-1 ~8. 1 × 10-5 mol·L-1 ,the differential is 57mV/pC,the detection limit was 4. 32×10-5 mol·L-1. The electrode response to rapid,reproducible,with this elec-trode in a standard curve method mepivacaine injections contents were determined,this method is simple,the result is consistent with the pharmacopoeia method.