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A compact open-path tunable diode laser absorption spectrometry (TDLAS) sensor has been developed for gas-phase hydrogen peroxide (H2O2) concentration monitoring during sterilization and aseptic disinfection. The sensor was based on a open-path multi-pass Herriott cell and wavelength modulated near-infrared diode laser. The sensor was calibrated by titrating the H2O2 water which was obtained by exhausting...
Detection of trace chemicals sensitively and selectively is important for environmental, safety and industrial process monitoring. Based on erbium-doped photonic crystal fibre (ED-PCF) laser intra-cavity absorption spectroscopy detection technology, analyzing the infrared absorption spectrum of acetylene (C2H2) gas. The relationship between the gas concentration and the absorption of C2H2 at the normal...
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