Measuring ion strength of electrolyte

Process and appts. for measuring directly the ion strength of an electrolyte, which are applicable partic. to biological e.g. metabolic processes, require the pH-value of the electrolyte to be measured by two indicators which are dependent in different ways on the ion strength. The ion strength is c...

Full description

Saved in:
Bibliographic Details
Main Authors OPITZ, NORBERT. DR., 5840 SCHWERTE, DE, LUEBBERS, DIETRICH WERNER, DR., 4600 DORTMUND, DE
Format Patent
LanguageEnglish
German
Published 28.04.1994
Edition5
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
Online AccessGet full text

Cover

More Information
Summary:Process and appts. for measuring directly the ion strength of an electrolyte, which are applicable partic. to biological e.g. metabolic processes, require the pH-value of the electrolyte to be measured by two indicators which are dependent in different ways on the ion strength. The ion strength is calculated from the approximation (I) where I= Ion strength Io= Ion strength on calibration pH1 (N)= pH value measured by one indicator N pH1(X)= pH value measured by the second indicator W(N)= valence of first indicator W(X)= valence of second indicator, and where F(N) is - 1/007(2w(N)+1).Pref. the indicators are fluorescence indicators and an associated reference indicator is used to eliminate intensity fluctuations. The indicators are pref. hydroxypyrentrisulphonate (HPTS) and b-methylumbelliferon (b-M).Measurement can be made of mixts. in an unknown compsn
Bibliography:Application Number: DE19823250066