Potentiometric and conductometric determination of ammonium by gas-diffusion flow injection analysis
作者： Wolfgang Frenzel , Cheng-Yu Liu
DOI: 10.1007/BF00322169
关键词:
摘要: Considerable enhancement of selectivity in the potentiometric and conductometric determination ammonium is provided by gas-diffusion separation flow injection analysis. Ammonium potassium selective liquid membrane electrodes can be used for determinations concentration range 10−7–10−2 mol/l with high precision fast sample throughput. No interferences are encountered presence ionic species molecules that likely adsorb when sensors direct contact sample. The over volatile amines enhanced due to kinetic discrimination. Conductometric detection shown as sensitive detection. A major advantage, however, linear rather than logarithmic relationship between conductivity.
springer.com
sci-hub.se 参考文章(27)
W. E. Morf, The Principles of Ion-Selective Electrodes and of Membrane Transport ,(2012)
W. Frenzel, C.Y. Liu, J. Oleksy-Frenzel, Enhancement of sensors selectivity by gas-diffusion separation Analytica Chimica Acta. ,vol. 233, pp. 77- 84 ,(1990) , 10.1016/S0003-2670(00)83463-7
J Richard Clinch, Paul J Worsfold, Harry Casey, None, An automated spectrophotometric field monitor for water quality parameters: determination of nitrate Analytica Chimica Acta. ,vol. 200, pp. 523- 531 ,(1987) , 10.1016/S0003-2670(00)80462-6
Peter L. Bailey, Analysis with ion-selective electrodes Heyden. ,(1976)
Miguel Valcarcel, M. Dolores Luque De Castro, Continuous separation techniques in flow injection analysis Journal of Chromatography A. ,vol. 393, pp. 3- 23 ,(1987) , 10.1016/S0021-9673(01)94200-1
Zhang. Genfa, Purnendu K. Dasgupta, Fluorometric measurement of aqueous ammonium ion in a flow injection system Analytical Chemistry. ,vol. 61, pp. 408- 412 ,(1989) , 10.1021/AC00180A006
S. Alegret, J. Alonso, J. Bartroli, M. del Valle, N. Jaffrezic-Renault, Y. Duvault-Herrera, Flow-through pH-ISFET as detector in the determination of ammonia Analytica Chimica Acta. ,vol. 231, pp. 53- 58 ,(1990) , 10.1016/S0003-2670(00)86396-5
M. E. Meyerhoff, Yvonne M. Fraticelli, Flow Injection Determination of Ammonia-N Using Polymer Membrane Electrode-based Gas Sensing System Analytical Letters. ,vol. 14, pp. 415- 432 ,(1981) , 10.1080/00032718108081416
Robert M. Carlson, Automated separation and conductimetric determination of ammonia and dissolved carbon dioxide Analytical Chemistry. ,vol. 50, pp. 1528- 1531 ,(1978) , 10.1021/AC50033A035
Mark E. Meyerhoff, Paul M. Kovach, An ion-selective electrode/flow-injection analysis experiment: determination of potassium in serum Journal of Chemical Education. ,vol. 60, pp. 766- 768 ,(1983) , 10.1021/ED060P766