氢离子中性载体电极用于环境含氟废水中pH值的检测

A hydrogen ion neutral carrier based on electrode for the determination of pH in waste water containing fluoride

设计合成了一种用于环境含氟废水中pH值测定的氢离子中性载体材料，即（o-羟基苄基）二正十二胺（Ⅱ），其聚氯乙烯膜电极的电位响应pH线性区间为2．0～12．5，能斯特响应斜率为56．9±0．4mV／pH（25℃）．该电极具有内阻低、响应快、电位选择性高、重现性好与稳定性高的优点，且不受氢氟酸侵蚀和不易破碎，能很好地被应用于环境含氟废水样品的pH值测量．

A hydrogen electrode based on an ion neutral carrier, o-hydroxybenzyl-didodecyl-amine （Ⅱ）, has been designed and applied for the determination of pH value in waste water containing fluoride. The PVC membrane pH electrode based on the carrier material has a wide linear response range of pH 2.0-12.5 and a Nernstian response slope of 56.9±0.4 mV/pH （25℃）. Having low resistance, short response time, high selectivity, good repro-ducibility, high stability, and being resistant to hydrofluoric acid and not fragile, the electrode can be well utilized to the determination of pH in waste water samples containing flu-oride.