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Metrology of Airborne Molecular Contaminants: Towards Trace HCl Measurement using Multipass-Assisted multiplexed dTDLAS/WMS (JTh2A.2)

Presenter: Thomas Benoy, PTB, Germany

An optical gas standard (OGS) based on time-multiplexed direct tunable diode laser absorption spectroscopy and wavelength modulation spectroscopy is presented. Using CO2 as surrogate gas a HCl detection-limit of 380 pptv is confirmed for the HCl 1-0 P5 line.

Authors:Thomas Benoy, PTB, Germany / Zhechao Qu, PTB, Germany / Olav Werhahn, PTB, Germany / Volker Ebert, PTB, Germany

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