PVC膜FeCl_4--选择电极的研制与应用  

Preparation and Application of the PVC-Based Membrane Tetrachloroferrate(Ⅲ)Ion-Selective Electrode

作　　者：李志英[1] 高文玲[1] 周清泽[1] 

机构地区：[1]河北师范大学化学系,石家庄050016

出　　处：《河北师范大学学报（自然科学版）》1998年第3期375-378,共4页Journal of Hebei Normal University：Natural Science

摘　　要：报道以三辛基十二烷基碘化铵为定域体的PVC膜FeC电极的研制方法及应用．该电极对FeC浓度在5．0×10－6～0．1mol·L－1范围内接近能斯特响应，电极斜率为58.2mV／PF3（18℃）．以此电极为指示电极测定工业盐酸及菠菜中的铁，结果满意．A new preparation method of the PVC-based membrane tetrachloroferrate (Ⅲ) ion-selective electrode is reported. The localizer is dibutylphthalate. At18℃,the electrode shows nernstian response for tetrachloroferrate (Ⅲ) ion over the concentration range from 0.1 mol. L-1 to 5. 0X 10-6mol. L-1 iron(Ⅲ)with a slope of 58. 2mV/pF3. The detection limit is down to 1. 7 X 10-6mol. L-1 iron (Ⅲ)in the 5 mol. L-1NaCl-0. 05 mol. L-1 HCl solution. Sn2+ .Fe2+ .Hg2+ .F- in a more extent interfere. Thepossibility of determination of iron (m )in solutions of high Cl- concentration has beendiscussed.

关 键 词：铁 PVC膜 离子选择电极 DTOA-I 

分 类 号：O614.811[理学—无机化学] O657.15[理学—化学]