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Verfahren zur Messung des Dipolmoments von in einem Fluid eingebrachten Molekuelen und/oder der Konzentration von Molekuelen mit einem Dipolmoment in einem Fluid

Process for the measurement of the dipole moment of molecules dissolved in a fluid and/or the concentration of molecules by using a dipole moment in a fluid
 
: Bauser, H.; Gunsilius, H.; Hellwig, G.; Otto, M.

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Frontpage ()

DE 1990-4035714 A: 19901109
DE 1990-4035714 A: 19901109
DE 4035714 C2: 19930304
G01N0027
German
Patent, Electronic Publication
Fraunhofer IGB ()

Abstract
The description relates to a process for the measurement of the dipole moment of molecules dissolved in a fluid and/or of the concentration of molecules by means of a dipole moment in a fluid, with a capacitive setup which can be immersed in the fluid and to which an electrical alternating field is applied. The invention is characterized by the fluid containing charge carriers whose relaxation frequency is smaller than that of the molecules exhibiting a dipole moment, by the electrodes of the capacitive setup being insulated against the fluid containing charge carriers by an insulation layer, and by the size of the dipole moment or the concentration of the molecules being defined by the change in the dielectric constant measured as a function of the frequency, said change resulting from molecules exhibiting dipole moments.

: http://publica.fraunhofer.de/documents/PX-39434.html