摘要
功能高分子为活性材料,加热压片,制成新型钆电极。其性能较PVC式钆离子选择电极为优。取钆电极膜片制成流通式钆电极,与流动注射仪联用,测得电极斜率59mV,与静态响应相似。每次进样500μl,测定频率每小时60～100次。操作简单,重现性好。
A new Gd electrode made by heat-pressed method with functional polymers as active material was developed. The electrode showed very short response time with a slop 60mV/pC. The selectivity, range of pH, internal resistance etc. of the electrode are superior to those of PVC membrane Gd-ion selective electrode. This Gd electrode has been successfully applied to the flow injction analysis with a determination frequency of 60～100 time/h, The linear range of the electrode is 1×10^(-2)～5×10^(-6)mol/L, the detection limit is 2.5×10^(-6)mol/L, and relative standard deviation is 1.5％.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1992年第5期611-615,共5页
Chinese Journal of Analytical Chemistry
关键词
流动注射分析
离子选择电极
钆
Flow injection analysis,Functional polymers,Ion-selective electrode.
