公开(公告)号：US12061136B2

公开(公告)日：2024-08-13

申请号：US16500054

申请日：2018-04-06

Applicant: Olfactomics Oy

Inventor： Antti Roine ,  Markus Karjalainen ,  Niku Oksala ,  Anton Kontunen ,  Sampo Saari

IPC: G01N1/22 ,  B03C3/017 ,  B03C3/41 ,  B03C3/47 ,  G01N27/623 ,  G01N33/497 ,  H01J49/04 ,  H01J49/16 ,  G01N1/02 ,  G01N1/04

CPC classification number: G01N1/2202 ,  B03C3/017 ,  B03C3/41 ,  B03C3/47 ,  G01N27/623 ,  G01N33/497 ,  H01J49/0422 ,  H01J49/168 ,  B03C2201/06 ,  B03C2201/26 ,  G01N2001/028 ,  G01N2001/045 ,  G01N2001/2223

Abstract: A measuring apparatus includes



an input to receive an aerosol sample,
a modifier unit to provide a modified sample by removing particles of the aerosol sample, and
a sensor unit to measure a spectral profile by detecting molecules of the gas phase of the modified sample,
wherein the spectral profile is a mobility spectrum or a mass spectrometer spectrum, the modifier unit is arranged to generate a corona discharge, to form charged particles by charging particles of the aerosol sample with the corona discharge, and to provide the modified sample by removing the charged particles with an electric field, the particle removal efficiency of the modifier unit has a cutoff size to prevent propagation of particles larger than the cutoff size to the sensor unit, and the cutoff size is in the range of 1 nm to 20 nm.