Separation of components of an analysis sample in an ion mobility spectrometer using a supply of selectively interactive gaseous particles
View Patent ↗A process for separation of components of a sample in an ion mobility spectrometer using a supply of selectively interactive gaseous particles. The components to be separated carry out selective interaction processes in a drift tube of the ion mobility spectrometer with specifically selected particles, in particular enantiometric collision molecules, which are supplied to a gas inlet, in such a way that they exhibit different rates of mobility during their drift from a sample inlet through the drift tube to an ion collector. This enables the ions to be detected in the ion collector in a time-delayed manner.
1. A separation process of components present in a sample, comprising:
the sample being supplied to an ion mobility spectrometer, and
also supplied to the ion mobility spectrometer is at least one separating substance which comprises gaseous particles which selectively interact with the molecules of the components to be separated.
2. The separation process of claim 1 , wherein
the components to be separated are chiral components.
3. The separation process of claim 1 or 2 , wherein
the separating substance comprises collision molecules.
4. The separation process of claim 3 , wherein
the collision molecules comprise enantiomeric molecules.
5. The separation process of claim 1 or 2 , wherein
the separating substance comprises macroscopic particles, in particular macromolecules or nanoparticles.
6. The separation process of claim 1 , wherein a carrier or drift gas is supplied to the ion mobility spectrometer.
7. The separation process of claim 6 , wherein the percentage (molar) ratio of separating substance to carrier gas assumes a value between 0 and 100%.
8. The separation process of claim 6 or 7 , wherein
the carrier gas and the separating substance are mixed in a gas supply system, and
supplied to a common gas inlet of the ion mobility spectrometer.
9. The separation process of claim 8 , wherein
the analysis medium is supplied to an analysis inlet disposed at one end of the ion mobility spectrometer, and
the common gas inlet is disposed at the other end of the ion mobility spectrometer.
10. An ion mobility spectrometer for the separation of components present in an analysis medium, comprising
a sample inlet, and
a separating substance inlet to supply at least one separating substance which comprises particles which selectively interact with the molecules of the components to be separated.
11. The ion mobility spectrometer of claim 10 , wherein
the separating substance inlet is also the carrier gas inlet.
12. The ion mobility spectrometer of claim 10 , wherein
the separating substance inlet is not simultaneously the carrier gas inlet.
13. An apparatus for the separation of components present in a sample, comprising:
an ion mobility spectrometer as recited in claim 10 , and
a gas supply system connected to the separating substance inlet.
14. The apparatus of claim 13 , wherein
the separating substance inlet is also the carrier gas inlet,
the combined separating substance/carrier gas inlet is combined with a mixer, and
in each case at least one supply line for a separating substance and a carrier gas opens into the mixer.
15. The apparatus of claim 13 , wherein
the separating substance inlet is not simultaneously the carrier gas inlet,
the separating substance inlet is connected to a mixer, and
a plurality of supply lines for at least one separating substance and/or gaseous particles opens into the mixer.
16. An apparatus for the separation of components present in a sample comprising:
an ion mobility spectrometer as recited in claim 10 , and a chromatographic or electrophoretic unit connected upstream of the ion mobility spectrometer.
17. An apparatus for the separation of components present in a sample comprising:
an ion mobility spectrometer as recited in claim 10 , and
an ion detection unit connected downstream of the ion mobility spectrometer.