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http://hdl.handle.net/2122/13397
Authors: | Giudice, Gaetano* Sciuto, Antonella* Meli, Alessandro* D'Arrigo, Giuseppe* Longo, D.* |
Title: | SO2 Monitoring With Solid State-Based UV Spectroscopy Compact Apparatus | Journal: | IEEE Sensors Journal | Series/Report no.: | 16/19 (2019) | Issue Date: | 2019 | DOI: | 10.1109/JSEN.2019.2913221 | Abstract: | We propose a solid state-based spectroscopy compact apparatus for monitoring environmental SO2, particularly suitable, for example, for volcanic applications. A prototype system, with a 170-mm long optical path, was assembled and tested using a commercial LED operating at 285 nm and a large area silicon carbide. The laboratory tests were carried out using calibrated quartz cuvettes containing SO2 at fixed concentrations and standard SO2 gas with 20% of O2 and complemented with N2 dry gas to fill the optical system chamber. Optical signal attenuations in the chemically interactive chamber follow the Beer-Lambert-Bouguer law in all the performed tests and a 0.16 ppm/pA nominal chemical resolution and ± 0.8 ppm concentration error were obtained from the experimental data for the current prototype. |
Appears in Collections: | Article published / in press |
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