The measuring method, which exactly measured ?
Oil consists of a mixture
of chemical substances, particularly of hydrocarbons. In order to receive from it
consumptionable products, essentially four processing levels are necessary:
In all processing steps and later in application, the consumption of the products, hydrocarbons can arrive into the environment.
Hydrocarbons cannot be measured directly, E.G. by truebungsmessung.
It is common to all measuring methods that before the analysis an extraction with organic solvents must be accomplished, since a direct regulation of oil is not possible in water with low concentrations. Water exhibits a strong absorption band likewise in the IR spectrum.
With the quantitative IR analysis the intensity is measured after the absorption, whereby either the maximum absorption or extinction of a gang or however the integrals extinction within a certain wavelength or wave number range are seized.
From the extinction
the concentration can be computed, if the molecular extinktionskoeffizient admits is. Since
this is dependent on the special chemical structure of the molecule, he must be determined
The measurement principle lies in the absorption of infrared light by IR-ACTIVE molecules. The more these molecules are present, the more lights one swallows.
The system consists of:
Source of infrared
But we developed a certain analysis unit.
We call it also optical bench.
All measured values of the OMS-Systems are identical to the IR spectrometers (dispersive Infrarotanalyse), since the same basis exists here. Over within the adjusted wavelengths determined gangs to select an appropriate oil of kind of condition can be used for calibration. We recommend to seize the oil of kind of condition Squalan around the entire range.
The devices are not adjusted to a certain
solvent, it can each suitable solvent be used.