Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/12498
Authors: | Chiarugi, Antonio* Viciani, Silvia* D'Amato, Francesco* Burton, Mike* |
Title: | Diode laser-based gas analyser for the simultaneous measurement of CO2 and HF in volcanic plumes | Journal: | Atmospheric Measurement Techniques | Series/Report no.: | /11(2018) | Issue Date: | 2018 | DOI: | 10.5194/amt-11-329-2018 | Abstract: | A portable analyser is described for simultane- ous detection of CO2 and HF emitted by volcanoes and fumaroles. The system is based on two fibre-coupled dis- tributed feedback lasers and only one multipass cell, and provides the absolute concentration values of the two gases, without requiring a calibration procedure, at a maximum rate of 4 Hz. The spectrometer can operate both in a closed-cell configuration and in an open-cell set-up, with the latter mit- igating problems associated with chemisorption of the HF molecule. The concept, practical realization and laboratory performance of the device are presented, together with results from a first test campaign measuring volcanic gases emitted from the crater of Vulcano, Italy. We obtained an in-field sen- sitivity of 320 ppb for CO2 and 20 ppb for HF at 2 s integration time. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
amt-11-329-2018.pdf | 6.43 MB | Adobe PDF | View/Open |
WEB OF SCIENCETM
Citations
50
3
checked on Feb 10, 2021
Page view(s)
58
checked on Apr 17, 2024
Download(s)
23
checked on Apr 17, 2024