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《Chinese Journal of Applied Chemistry》 1987-03
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ON THE CHARACTER OF RARE EARTH ION-SELECTIVE ELCTRODE IN THE NON-LINEAR RESPONSE REGION

Li Han;Cheng Yudu;Wu Jin1an Changchun Institute of Applied Chemistry, Academia Sinica  
The character of cerium oxide membrane ion-selective electrode (ISE) for individualand mixed rare earth system in the non-linear response region has been investigated.The potential of the linear response region of ISE for HCl-CeCl_3 system at pH = 4.9--6.0and rare earth conceniration (C) = 10~(-2)--10~(-5)M can be described as: E = -- 30 lgC_(CeCl) -- 47. 1 The relations of △E--C and △E--pH for HCl--PrCl_3 system show that when pH2 the inter-ference is higher and the electrode can't be used for the measurement. The relations of△E--C for two rare earths mixed (Pr--Nd)Cl_3 C = 0.25--0. 7M, four rare earths (La-Ce-Pr-Nd) Cl_3 C = 0. 14--0. 7M and fifteen rare earths (La--Lu) and Y C = 0.2--1. 0M systems in thepresence of NH_4Cl show that when pH≥ 2 the responses similar to those what in the indivi-dual rare earth, while pH 2 the interference of the acidity is evident. A general, moreaccurate model for various systems is proposed through mathmatical simulation: E = B_1 lg [C_i +B_2 (C_i + C_j)~(B_?)]
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【Citations】
Chinese Journal Full-text Database 1 Hits
1 Wu Jinlan Zhang Yonghua(Chang Yunhua) (Changchun Institute of Applied Chemistry,Acade(?)ia Sinica);Construction of a Rare Earth Ion-selective Electrode[J];Chinese Journal of Analytical Chemistry;1983-05
【Co-citations】
Chinese Journal Full-text Database 6 Hits
1 Wang Meimei Zhang Xiao~1 in Li Meizheng Qu Qingming (Department of Chemistry);Study on Rare Earth Ion-selective Electrodes with Rare Earth Active Material-containing PVC Membrane[J];Journal of Fujian Normal University(Natural Science Edition);1993-04
2 Wu Jinlan. Zhang Yonghua (Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022);Gadolinium Ion-selective Electrode and Its Application in Flow Injection Analysis[J];Chinese Journal of Analytical Chemistry;1992-05
3 Wu Jinlan, Zhang Yonghua(Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022);Rare Earth Elements Ion-selective Electrodes Based on Acetyl Cellulose[J];Chinese Journal of Analytieal Chemistry;1994-11
4 Cheng Yudu Li Han (Changchun Institute of Applied Chemistry,Academia Sinica);Investigation on Mathematical Simulation of Response Character of Re-ISEs in the Complex Systems[J];Computers and Applied Chemistry;1991-02
5 Wu Jinlan Zhang Yonghua Li Wenhong Che Jitai Yan Meilan Sun Jiazhen (Changchun Institute of Applied Chemistry, Academia Sinica);STUDY ON FUNCTIONAL POLYMER MEMBRANE ELECTRODE CONSTRUCTION OF GADOLINIUM ION-SELECTIVE ELECTRODE[J];Journal of The Chinese Rare Earth Society;1985-01
6 Pan Enting and Zhou Xuemei(Department of Chemistry, Guaiigxi Normal University,Guilin 541004)Huang Zaifu(Departmeiit of Environmental Science ,Wuhan University,Wuhan);Syntbcsis of saturatd Urushiol Crown Ether Rare EarthComplexes andthe Lanthanum(Ⅲ)Ion Selective Electrode Using the Same[J];CHINESE JOURNAL OF APPLIED CHEMISTRY;1994-01
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