公开(公告)号：US10256084B2

公开(公告)日：2019-04-09

申请号：US15323279

申请日：2015-07-02

Applicant: NANOTECH ANALYSIS S.R.L.S.

Inventor： Gianpiero Mensa ,  Raffaele Correale

IPC: H01J49/04 ,  H01J49/00 ,  G01N33/00 ,  H01J49/14 ,  H01J49/24

Abstract: An electronic device 1 for analyzing a gas composition, which is present in an environment A at an environment pressure Pa, is described. The device 1 is portable and comprises a gas sampling module 7, an ion filtering module 8 and an ion detecting module 9. The sampling module 7 is configured to adjust an input gaseous flow Fi of gaseous particles from the environment A and to ionize said gaseous particles and to generate an ion flow I having an ion composition representative of the gas composition to be analyzed. The ion filtering module 8 is configured to controllably select at least one type of ions present in the ion flow I and to generate a corresponding at least one homogeneous ion beam I′. The ion detecting module 9 is configured to measure the intensity of such least one ion beam I′.

公开(公告)号：US20170133212A1

公开(公告)日：2017-05-11

申请号：US15323279

申请日：2015-07-02

Applicant: NANOTECH ANALYSIS S.R.L.S.

Inventor： Gianpiero Mensa ,  Raffaele CORREALE

IPC: H01J49/04 ,  G01N33/00 ,  H01J49/14 ,  H01J49/00 ,  H01J49/24

CPC classification number: H01J49/0422 ,  G01N33/0016 ,  H01J49/0022 ,  H01J49/0427 ,  H01J49/147 ,  H01J49/24

Abstract: An electronic device 1 for analyzing a gas composition, which is present in an environment A at an environment pressure Pa, is described. The device 1 is portable and comprises a gas sampling module 7, an ion filtering module 8 and an ion detecting module 9. The sampling module 7 is configured to adjust an input gaseous flow Fi of gaseous particles from the environment A and an output gaseous flow Fo so as to reproduce inside the sampling module 7 a gas composition representative of the gas composition to be analyzed. In addition, the sampling module 7 is configured to ionize said gaseous particles and to emit the ions produced, so as to generate an ion flow I having an ion composition representative of the gas composition to be analyzed. The ion filtering module 8 is operatively connected to the sampling module 7 to receive the ion flow I, and is configured to controllably select at least one type of ions present in the ion flow I and to generate a corresponding at least one homogeneous ion beam I′, having an intensity representative of the concentration of the corresponding gas particle in the gaseous composition to be analyzed. The ion detecting module 9 is operatively connected to the ion filtering module 8 to receive the at least one ion beam I′, and is configured to measure the intensity of such least one ion beam I′ and to generate a corresponding electric signal S representative of the concentration of the corresponding gas particle in the gaseous composition to be analyzed.The device 1 further comprises pumping means 95, configured to extract gas from the device 1, so as to control an ionization pressure Pi that is present inside the sampling module 7. The sampling module 7 is configured in such a way that the input gaseous flow Fi comprises a plurality of micro-flows at a molecular or predominantly molecular regime, at the environment pressure Pa, and the output gaseous flow Fo is a flow at a molecular or predominantly molecular regime, at the ionization pressure Pi.