Acta Chimica Sinica ›› 1980, Vol. 38 ›› Issue (4): 392-394. Previous Articles     Next Articles

有机卤化合物中卤素的离子选择性电极的快速微量分析

王昌益1, 苏美琼2   

  1. 1. 云南大学化学系 昆明;
    2. 云南省化工研究所 昆明
  • 收稿日期:1978-07-14 出版日期:1980-07-15 发布日期:2013-06-03

RAPID MICRODETERMINATION OF HALOGEN IN ORGANOHALOGEN COMPOUNDS BY ION SELECTIVE ELECTRODE

WANG CHANG-YI1, SU MEI-QIONG2   

  1. 1. Department of Chemistry, Yunnan University, Kunming;
    2. Yunnan Institute of Chemical Engineering
  • Received:1978-07-14 Online:1980-07-15 Published:2013-06-03

The oxygen flask method in combination with potentiometric titration with a standard Ag+ solution is used for microanalysis of organic chloro-and bromo-compounds.Chlorine ion-selective electrode (or a wire of Ag-AgCl (electrod)) is used as the end point detector in 90% acetone (V/V).Potentials are measured vs.SCE(KNO3) for glass electrode).Thus, a sharp end point will be directly shown on the instrument.The method has the advantages of being simple and rapid and accurate to ±0.3% of absolute error.The presence of N, F, S, P, As, B, Si did not interfere with the organic chlorine and bromine determination.Also, this procedure is useful for the microdetermination of organio chlorine in the presence of bromine or/and iodine.