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Title: Reference electrode for strong oxidizing acid solutions

Abstract

A reference electrode for the measurement of the oxidation-reduction potentials of solutions is especially suitable for oxidizing solutions such as highly concentrated and fuming nitric acids, the solutions of nitrogen oxides, N.sub.2 O.sub.4 and N.sub.2 O.sub.5, in nitric acids. The reference electrode is fabricated of entirely inert materials, has a half cell of Pt/Ce(IV)/Ce(III)/70 wt. % HNO.sub.3, and includes a double-junction design with an intermediate solution of 70 wt. % HNO.sub.3. The liquid junctions are made from Corning No. 7930 glass for low resistance and negligible solution leakage.

Inventors:
 [1];  [2];  [3];  [4]
+ Show Inventor Affiliations
  1. Livermore, CA
  2. Castro Valley, CA
  3. (Pleasanton, CA)
  4. Brentwood, CA
Issue Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
OSTI Identifier:
867229
Patent Number(s):
4891124
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
reference; electrode; strong; oxidizing; acid; solutions; measurement; oxidation-reduction; potentials; especially; suitable; highly; concentrated; fuming; nitric; acids; nitrogen; oxides; fabricated; entirely; inert; materials; half; cell; iii; 70; wt; hno; double-junction; design; intermediate; solution; liquid; junctions; corning; 7930; glass; resistance; negligible; leakage; nitrogen oxide; acid solutions; inert material; acid solution; nitrogen oxides; nitric acid; reference electrode; especially suitable; highly concentrated; reduction potential; oxidizing acid; inert materials; strong oxidizing; oxidizing solution; oxidation-reduction potential; intermediate solution; /204/

Citation Formats

Rigdon, Lester P, Harrar, Jackson E, Bullock, Sr., Jack C., and McGuire, Raymond R. Reference electrode for strong oxidizing acid solutions. United States: N. p., 1990. Web.
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Rigdon, Lester P, Harrar, Jackson E, Bullock, Sr., Jack C., & McGuire, Raymond R. Reference electrode for strong oxidizing acid solutions. United States.
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Rigdon, Lester P, Harrar, Jackson E, Bullock, Sr., Jack C., and McGuire, Raymond R. Mon . "Reference electrode for strong oxidizing acid solutions". United States. https://www.osti.gov/servlets/purl/867229.
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@article{osti_867229,
title = {Reference electrode for strong oxidizing acid solutions},
author = {Rigdon, Lester P and Harrar, Jackson E and Bullock, Sr., Jack C. and McGuire, Raymond R},
abstractNote = {A reference electrode for the measurement of the oxidation-reduction potentials of solutions is especially suitable for oxidizing solutions such as highly concentrated and fuming nitric acids, the solutions of nitrogen oxides, N.sub.2 O.sub.4 and N.sub.2 O.sub.5, in nitric acids. The reference electrode is fabricated of entirely inert materials, has a half cell of Pt/Ce(IV)/Ce(III)/70 wt. % HNO.sub.3, and includes a double-junction design with an intermediate solution of 70 wt. % HNO.sub.3. The liquid junctions are made from Corning No. 7930 glass for low resistance and negligible solution leakage.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}
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