在线阅读 --自然科学版 1998年3期《PVC膜FeCl4-选择电极的研制与应用》
PVC膜FeCl4-选择电极的研制与应用--[在线阅读]
李志英1, 高文玲1, 周清泽1
河北师范大学化学系, 050016, 石家庄
起止页码: 375--378页
DOI:
摘要
报道以三辛基十二烷基碘化铵为定域体的PVC膜FeCl4-电极的研制方法及应用。该电极对FeCl4-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/PFc(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。

Preparation and Application of the PVC-Based Membrane Tetrachloroferrate(Ⅲ)Ion-Selective Electrode
Li Zhiying1, Gao Wenling1, Zhou Qingze1
Department of Chemistry, Hebei Normal University, 050016, Shijiazhuang, PRC
Abstract:
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.
Key words: DTOA-I; electrode; FeCl4-;

收稿日期: 1997-08-24
基金项目:

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