Long-Chain Alkylthiouronium Derivatives as Carriers for Anion-Selective Electrode

Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (3): 352.

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Long-Chain Alkylthiouronium Derivatives as Carriers for Anion-Selective Electrode

LIN Hui-Gai, LIU Ai-Ping, XIAO Dan, CAO Zhong, YU Ru-Qin

Department of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082

Received:1993-03-09 Revised:1993-11-07 Online:1994-03-24 Published:1994-03-24

Abstract

Abstract: Aseries of long-chain alkylthiouronium derivative were synthesized and used as new type carriers for preparing anion-selective electrodes.The S-hexadecylpropenyl-thiouronium picrate(S-HPTP)showed the best performance among the carriers tested.The electrode based on this carriers compound exhibited linear response range of 1.0×10^-2-3.9×10^-7mol/L with a detection limit of 2.7×10^-7mol/L of picrate ion.The selectivity of electrodes was examined, and the S-octadecylphenylthiouronium picrate(S-OPHTP)electrode was used for potentiometric titration of berberine.

Key words: Alkylthiouronium, PVC membrane electrode, Picric acid, Berberine, Potentiometric titration

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LIN Hui-Gai, LIU Ai-Ping, XIAO Dan, CAO Zhong, YU Ru-Qin. Long-Chain Alkylthiouronium Derivatives as Carriers for Anion-Selective Electrode[J]. Chem. J. Chinese Universities, 1994, 15(3): 352.

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Long-Chain Alkylthiouronium Derivatives as Carriers for Anion-Selective Electrode

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