Choising the alternative conditions for the continuity of the work of the nitrate-selective electrode

Authors

  • Hajar Nasser
  • Faten Aladdin
  • Heba Nasser

Abstract

 

Due to the absence of operational requirements and its unidentified solutions ,this study presented definition alternative analytical  and technical conditions for the continuation of  nitrate-selective electrode working. Many electrolytes were tested (ammonium sulfate, ammonium acetate and ammonium chloride). The technical and analytical conditions shows  that the best response which give the Nernst  slope of the electrode had been obtained by adding 0.5ml of ammonium sulfate (3mol / l), and the response time was 20sec, by the time that values stabilized  for 15sec. The study of pH effect on the electrode response also showed that electrode works within the range (2-8)  of  pH and that the best response was at pH = 5.5 by using acetic acid-sodium acetate buffer. The effect of temperature on the potential electrode was studied ,it showed that the Nernest electrode response realized within  the range  (18-37) C0of temperature.While Studying the effect of some interfering ions such as (OH-, HCO3-, CO32-,Cl-,NO2-) on the work of the electrode showed low values ​​of the coefficient of selectivity, which did not exceed 3×10-2 that the electrode was not affected by the presence of these ions. The chosen  conditions were experimented on standard solutions, which showed that the electrode is working within the range (10-4-10-1) mol / l of concentrations. When the concentrations was about 10-5mol/l  or less than that, it was necessary to soak the electrode in solution which has low concentration for at least one hour, and diluted  the taken volumes ten times . These technical and analytical conditions was applied  on standard solutions and environmental samples(water), which showed the accuracy ,correctly and authenticity of the measurements.

Downloads

Published

2019-02-27

How to Cite

1.
Nasser H, Aladdin F, Nasser H. Choising the alternative conditions for the continuity of the work of the nitrate-selective electrode. TUJ-BA [Internet]. 2019Feb.27 [cited 2024Nov.24];39(3). Available from: https://journal.tishreen.edu.sy/index.php/bassnc/article/view/3745

Issue

Vol. 39 No. 3 (2017): العلوم الأساسية

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

The authors retain the copyright and grant the right to publish in the magazine for the first time with the transfer of the commercial right to the Tishreen University Journal -Basic Sciences Series  

 Under a CC BY- NC-SA 04 license that allows others to share the work with of the work's authorship and initial publication in this journal. Authors can use a copy of their articles in their scientific activity, and on their scientific websites, provided that the place of publication is indicted in Tishreen University Journal -Basic Sciences Series .  The Readers have the right to send, print and subscribe to the initial version of the article, and the title of Tishreen University Journal -Basic Sciences Series   Publisher

 

journal uses a CC BY-NC-SA license which mean

You are free to:

  • Adapt — remix, transform, and build upon the material
  •  
  • The licensor cannot revoke these freedoms as long as you follow the license terms.

 

  • Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • NonCommercial — You may not use the material for commercial purposes.
  • ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
  • No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Most read articles by the same author(s)