Lead-selective membrane electrodes based on neutral carriers. Part I. Acyclic amides and oxamides
Lead-selective membrane electrodes based on neutral carriers. Part I. Acyclic amides and oxamides
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基于中性载体的铅选择性膜电极。
DOI：
10.1039/an9901501085
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发表时间：
1990
期刊：
影响因子：
4.2
通讯作者：
E. Malinowska
中科院分区：
文献类型：
--
作者：
E. Malinowska
一组酰胺和草酰胺已被用作溶剂聚合物膜电极中铅离子的潜在离子载体。使用含有离子载体 ETH 295 和四(对氯苯基)硼酸钾的膜获得了最有利的分析结果（斜率、log kPb、M 和寿命）。使用这些膜：（i）获得 PbII 中每 pPb 单位斜率为 35.3 mV 的线性响应，活性范围为 10-5.2-10-1.0M； (ii) 对于所研究的离子（Ag+ 和 H+ 离子除外），选择性因子 (log kPb,M) 低于 –1.5； (iii) 电极可以使用至少 2 个月，其性能不会发生变化。
A group of amides and oxamides has been used as potential ionophores for lead ions in solvent polymeric membrane electrodes. The most favourable analytical results (slope, log kPb,M and lifetime) were obtained with membranes incorporating ionophore ETH 295 and potassium tetrakis(p-chlorophenyl)borate. With the use of these membranes: (i) a linear response with a slope of 35.3 mV per pPb unit in PbII and an activity range of 10–5.2–10–1.0M were obtained; (ii) the selectivity factors (log kPb,M) were lower than –1.5 with respect to the ions studied (with the exception of Ag+ and H+ ions); (iii) the electrodes can be used with no change in their properties for at least 2 months.