摘要
本文以Igepalco-880-2 TPB为电活性物质,研制了中性载体PVC膜铅离子选择性电极;以邻硝基二苯醚和邻硝基十二烷基醚为介体溶剂,测定了电极对一些常见的一价和二价离子的选择系数,除钡离子外,均在10-3—10-5数量级;适用的pN范围为2—5,电极的重现性、稳定性均较好。
A new lead ion-selective electrode of PVC membrane based on the neutral carrier of Pb·lgepal co-880·2TPB gives a fast stable and reproducible linear response within a lerd nitrate concentration range of 7×10^(-6)M-1×0-1’M.The coefficient of selectivity of a number of cations varries from 10-3 to 10-5 The life time of the membrane is over 7 months.The electrode can be used as a incicator electrode for the potcntiomeiric titralion of Cr(Ⅵ) in electrical plating solution.
作者
向远
龙有前
高肖梅
Xiang Yuan;Long Youqian;Gao Xiaomei(Xiangtai Machiaery and Eertricity College,Xiangtai)
出处
《高等学校化学学报》
SCIE
EI
CAS
1986年第7期590-594,共5页
Chemical Journal of Chinese Universities