公开(公告)号：US20250027918A1

公开(公告)日：2025-01-23

申请号：US18225017

申请日：2023-07-21

Applicant: Picarro, Inc.

Inventor： Bruce A. Richman ,  James M. Hamilton ,  Chris W. Rella ,  Elizabeth R. Schemm ,  Kal M. Skog ,  Rebecca Wernis

IPC: G01N30/88 ,  G01N1/40

Abstract: Improved gas sample preprocessing is provided for scanning optical spectroscopic analysis instruments by tailoring characteristic gas handling times to the scan time Ts of the analysis instrument. In particular, for sample preconcentration, the desorption duration Td of the sample preconcentrator should be ≥2Ts. For gas chromatography, the elution duration Te of relevant eluted species should be ≥2Ts. This advantageously avoids having significant changes in the gas sample within the analysis instrument as a scan is being performed.