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采用 Agcl—Ag_2S 型固体膜氯离子敏感电极,测得一定体积的 PPS 氧瓶分解液中氟离子的摩尔浓度,建立了微量条件下测定 PPS 分子量■的方法。样品未经分级,平行实验的误差在±10%左右。从而求得 PPS 的η～
AgCl-Ag_2S solid membrane chloride ion-sensitive electrode was used to measure the molar concentration of fluoride ion in a certain volume of PPS oxygen bottle decomposition liquid, and the method of determining the molecular weight of PPS in a trace amount was established. The sample is not graded, the error of parallel experiments is about ± 10%. PPS thus obtained η ~