时钟反应系 HCHO-HSO_3^--SO_3^(2-)的 pH 突跃法测定 HSO_3^-盐的含量

DETERMINATION OF HSO_3^- BY MEANS OF A CLOCK REACTION SERIES HCHO-HSO_3^--SO_3^(2-)WITH SUDDEN CHANGE

时钟反应的终点,一般用显色剂出现颜色指示。本文探讨HCHO-HSO_3^-SO_3^(2-)系列受酸催化形成缔合型离子的pH突跃,作为HSO_3^-定量的分析依据。

Generally the end point of a clock reaction is indicated by colour appearance. We study here the sudden jump of pH value in the formation of associated ions resulting from the acid catalysis of HCHO-HSO_3^--SO_3^(2-) series and such a jump is used as a criterion for determination of HSO_3^-.