Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/15962
DC FieldValueLanguage
dc.date.accessioned2023-01-23T06:30:07Z-
dc.date.available2023-01-23T06:30:07Z-
dc.date.issued2022-
dc.identifier.urihttp://hdl.handle.net/2122/15962-
dc.description.abstractn this work, a compact, portable, extended operating life, maintenance-free and remotely operable apparatus for optical absorbance measurements in the ultraviolet region is proposed. The system is useful for concentration measurement of chemical species or biological agents that exhibit ultraviolet light absorption. An apparatus prototype was developed using a commercial LED as photons source at the desired wavelength and a photo-detector with low noise, high sensitivity and visible blindness, opportunely fabricated using Silicon Carbide technology. A suitable electronic for handling the very low-level current of the detector has been designed and built to be robust, portable, low-power, low-cost and with a WiFi user interface. The ultraviolet spectroscopy apparatus application to which this work is aimed, is the low-level concentration measurement of SO 2 in volcanic environment, while it can be easily adapted to other molecules detection and higher concentration level. While in previous Authors’ work the system feasibility has been explored using laboratory instrumentation, in this work the focus is to design a system that can be used in real harsh volcanic environment, where system lightweight, endurance and chemical strength against aggressive compounds are paramount. Resolution of approximately 1 ppm, compactness, robustness and insensitivity to humidity and temperature variations are required for this kind of environment. The performed laboratory tests and calibration for SO 2 monitoring, are reported and discussed. The system shows good sensitivity as high as 8 pA/ppm, a resolution < 1 ppm for SO 2 detection and low cross-sensitivity to main components usually present in volcanic gases.en_US
dc.language.isoEnglishen_US
dc.publisher.nameIEEEen_US
dc.relation.ispartofIEEE Sensors Journalen_US
dc.relation.ispartofseries11/22 (2022)en_US
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/us/*
dc.subjectportable UV spectrometeren_US
dc.subjectSO2 monitoringen_US
dc.subject4H-SiC UV detectoren_US
dc.subjectvolcanoes environment monitoringen_US
dc.titlePortable Spectroscopy System for Environmental Monitoring: An SO2 Case Studyen_US
dc.typearticleen
dc.description.statusPublisheden_US
dc.type.QualityControlPeer-revieweden_US
dc.description.pagenumber11135 - 11143en_US
dc.identifier.URLhttps://ieeexplore.ieee.org/document/9761205en_US
dc.subject.INGV05.04. Instrumentation and techniques of general interesten_US
dc.subject.INGV04.08. Volcanologyen_US
dc.identifier.doi10.1109/JSEN.2022.3169334en_US
dc.relation.references[1] J. Bridgeman, A. Baker, D. Brown, and J. B. Boxall, “Portable LED fluorescence instrumentation for the rapid assessment of potable water quality,” Sci. Total Environ., vols. 524–525, pp. 338–346, Apr. 2015, doi: 10.1016/j.scitotenv.2015.04.050. [2] A. P. Kilungo, N. Carlton-Carew, and L. S. Powers, “Continuous realtime detection of microbial contamination in water using intrinsic fluorescence,” J. Biosensors Bioelectron., vol. S12, no. 1, pp. 1–5, Mar. 2013, doi: 10.4172/2155-6210.S12-002. [3] J. Hodgkinson and R. P. Tatam, “Optical gas sensing: A review,” Meas. Sci. Technol., vol. 24, no. 1, pp. 12004–12010, Nov. 2012, doi: 10.1088/0957-0233/24/1/012004.en_US
dc.description.obiettivoSpecifico7TM.Sviluppo e Trasferimento Tecnologicoen_US
dc.description.journalTypeJCR Journalen_US
dc.relation.issn1530-437Xen_US
dc.contributor.authorLongo, Domenico-
dc.contributor.authorGiudice, Gaetano-
dc.contributor.authorD'Arrigo, Giuseppe-
dc.contributor.authorSciuto, Antonella-
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italiaen_US
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia-
crisitem.author.orcid0000-0001-9858-3061-
crisitem.author.orcid0000-0002-9410-4139-
crisitem.author.orcid0000-0002-5655-5457-
crisitem.author.orcid0000-0001-6271-8032-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent05. General-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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