glass electrode


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glass electrode

[¦glas i′lek‚trōd]
(physical chemistry)
An electrode or half cell in which potential measurements are made through a glass membrane, which acts as a cation-exchange membrane; thus, the potential arises from phase-boundary and diffusion potentials which, depending on the composition of the glass, are logarithmic functions of the activity of the cations such as H+, Na+, or K+of the solutions in which the electrode is immersed.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
FT-IR spectra of the conjugated phenylene polymermodified ITO glass electrode prepared by electrochemical polymerization were obtained (Figure 6).
The conventional methods using glass electrodes for pH measurements are bigger in size, highly sensitive to temperature changes and are less sensitive compared to the technique of using ISFET [25].
By the fall of 1937, Beckman and his team at NTL had greatly improved their own manufactured glass electrodes. Sales and profits of the meter soared despite the Great Depression of the 1930s.
Due to the presence of perchlorate ions in the system, the internal solution of the combined glass electrode (KCl) was substituted by NaCl = 3.00 mol [L.sup.-1] solution, in order to prevent KCl[O.sub.4] precipitation in the electrode membrane.
Aqueous solution of sodium 3,4(methylenedioxy)cinnamate 0.10 mol [L.sup.-1] was prepared from 3,4-(methylenedioxy)cinnamic acid suspension by treatment with sodium hydroxide 0.10 mol [L.sup.-1], whose pH was adjusted around 7.5 using a pH-meter with a combined glass electrode. Aqueous solution of the bivalent metal ion was prepared by dissolving the respective chloride.
[13, 14] designed a liquid electrode microfluidic chip drives by liquid glass electrode for nanofluidics (NLGE).
For manual determination the Metrohm 691 meter with a combined glass electrode assembly, Dosimat dispensing unit and titration stand are used, whilst for automated analyses the Titro processor or Titrino ranges of titrators are recommended by Metrohm UK Ltd of Unit 2, Topangel, Buckingham Industrial Park, Buckingham, tel: 0128 082 4824.
In addition, the ToupH glass electrode line features enhanced durability that is four times stronger than its predecessor.