liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
Accuracy and choice of procedures in 24-hour oesophageal pH monitoring with monocrystalline antimony electrodes.
Linköping University, Department of Biomedical Engineering, Physiological Measurements. Linköping University, The Institute of Technology.
1986 (English)In: Medical and Biological Engineering and Computing, ISSN 0140-0118, E-ISSN 1741-0444, Vol. 24, no 6, 602-608 p.Article in journal (Refereed) Published
Abstract [en]

In 24 h pH monitoring, the evaluation is dependent on the absolute accuracy of the pH measurements. Several sources of error exist, such as the chemical composition of calibration buffers and reference electrode gel and the effect of temperature on both the pH and the reference electrodes. We investigated the magnitude of these errors for the monocrystalline antimony electrode. Similar analysis applies to other types of pH electrodes. The errors we found are important when choosing a calibration procedure. We recommend a calibration procedure in which the pH and reference electrodes are both put in a beaker with the calibration buffers prior to and after the 24 h measurements. The calibration buffers and the electrode gel should have a specially selected ion composition where, for example, the Cl-ion concentration is critical. Corrections for differences in temperature between the calibration and the in situ measurements must be added. The pH measurements can be checked by performing in situ calibration.

Place, publisher, year, edition, pages
1986. Vol. 24, no 6, 602-608 p.
National Category
Inorganic Chemistry
URN: urn:nbn:se:liu:diva-116890DOI: 10.1007/BF02446263PubMedID: 3657317OAI: diva2:801406
Available from: 2015-04-09 Created: 2015-04-09 Last updated: 2015-04-20

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Ask, Per
By organisation
Physiological MeasurementsThe Institute of Technology
In the same journal
Medical and Biological Engineering and Computing
Inorganic Chemistry

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 117 hits
ReferencesLink to record
Permanent link

Direct link