Show simple item record

AuthorSchädle, Thomasdc.contributor.author
Date of accession2017-01-20T09:28:33Zdc.date.accessioned
Available in OPARU since2017-01-20T09:28:33Zdc.date.available
Year of creation2012/2016dc.date.created
Date of first publication2017-01-20dc.date.issued
AbstractThe presented cumulative thesis is focused on the development of mid-infrared sensors and their application in environmental monitoring scenarios. This thesis is based on five peer-reviewed journal articles, and includes three articles published in collaboration with the Energy department of the Commonwealth Scientific international Research Organization (CSIRO), at the Australian Resource Research Centre (ARRC) in Perth, Western Australia. The scope of all research presented in this thesis covers contemporary applications of mid-infrared spectroscopic and sensing systems with a strong emphasis on environmental monitoring, in particular on the detection of volatile organic compounds (VOCs) and dissolved greenhouse gases (GHG). One main focus of this thesis was the advancement of infrared attenuated total reflection (IR-ATR) methods for detecting, differentiating, and quantifying dissolved hydrocarbons, and specifically constituents derived from oil spillage by evaluating the infrared ‘fingerprint’ of VOCs generated via their dissolution pattern in water at ppb (μg/L) concentration levels. The ‘fingerprint’ of a certain VOC hereby comprises distinctive infrared absorption features in the spectral regime from 600-800 cm-1, which may be evaluated for identifying specific hydrocarbon patterns that are characteristic for different crude and refined oils. A complementary contribution of this thesis is the development of appropriate sensor platforms enabling continuous measurements of dissolved carbon dioxide and methane, two main contributors to the release of greenhouse gases into our atmosphere. Obtaining in-situ information on greenhouse gases captured in deep sea or aquifer environments used for GHG immobilization via carbon capture and storage (CCS) mechanisms is a challenge that has not been satisfactorily addressed to date. Hence, an IR-ATR based on-line sensor system for detecting, monitoring, and differentiating carbon dioxide and methane in dissolved and gaseous states at different pressures (up to 11 MPa) was developed and tested. Furthermore, it is demonstrated that the detection and quantification of dissolved carbon dioxide next to its isotopic analogue (13CO2) at pressurized conditions is enabled at relevant saline downhole conditions present within injection wells, thereby serving as an on-line/in-line monitoring tool. Consequently, such sensor systems may eliminate present problems in geosequestration scenarios related to either portability of an analyzer system, or its capability of operating reliably at harsh conditions during in-field deployment. These results are of particular importance for advancing CCS processes and fundamentally understanding the impact of stored gases on groundwater and aquifer resources.dc.description.abstract
Languageendc.language.iso
PublisherUniversität Ulmdc.publisher
Articles in publ.Schädle, T; Pejcic, B.; Myers, M.; Mizaikoff, B. Fingerprinting Oils in Water via Their Dissolved VOC Pattern Using MID-Infrared Sensors. Analytical Chemistry, 86 (19), 2014, 9512-9517. Schädle, T.; Pejcic, B.; Mizaikoff, B. Monitoring dissolved carbon dioxide and methane in brine environments at high pressure using IR-ATR spectroscopy. Analytical Methods, 8 (4), 2016, 756-762 Schädle, T.; and Mizaikoff, B. Selecting the right tool: Comparison of the analytical performance of infrared attenuated total reflection accessories. Applied Spectroscopy, Accepted 2016, DOI: 10.1177/0003702816641574 Schädle, T.; Pejcic, B.; Myers, M.; Mizaikoff, B. Portable Mid-Infrared Sensor System for Monitoring CO2 and CH4 at High Pressure in Geosequestration Scenarios. ACS Sensors, 1 (4), 2016, 413–419. Schädle, T.; Mizaikoff, B. Mid-Infrared Waveguides - A Perspective. Applied Spectroscopy, DOI 10.1177/0003702816659668 J.-C. Gabriel. A Promising Portable Tool for the Continuous, Online, and Field Monitoring of Pressured Processes. doi: 10.1021/acscentsci.6b00075dc.relation.haspart
LicenseStandarddc.rights
Link to license texthttps://oparu.uni-ulm.de/xmlui/license_v3dc.rights.uri
Dewey Decimal GroupDDC 540 / Chemistry & allied sciencesdc.subject.ddc
LCSHInfrared spectroscopydc.subject.lcsh
LCSHGreenhouse gasesdc.subject.lcsh
LCSHSpectrum analysisdc.subject.lcsh
TitleMid-infrared sensors for environmental monitoringdc.title
Resource typeDissertationdc.type
Date of acceptance2016-12-15dcterms.dateAccepted
RefereeMizaikoff, Borisdc.contributor.referee
RefereeTaubmann, Gerharddc.contributor.referee
RefereeRegan, Fionadc.contributor.referee
DOIhttp://dx.doi.org/10.18725/OPARU-4194dc.identifier.doi
PPN482419938dc.identifier.ppn
URNhttp://nbn-resolving.de/urn:nbn:de:bsz:289-oparu-4233-7dc.identifier.urn
GNDMIR-Spektroskopiedc.subject.gnd
GNDInfrarotspektroskopiedc.subject.gnd
GNDTreibhausgasdc.subject.gnd
FacultyFakultät für Naturwissenschaftenuulm.affiliationGeneral
InstitutionInstitut für Analytische und Bioanalytische Chemieuulm.affiliationSpecific
InstitutionInstitut für Theoretische Chemieuulm.affiliationSpecific
Shelfmark print versionW: W-H 14.991uulm.shelfmark
Grantor of degreeFakultät für Naturwissenschaftenuulm.thesisGrantor
DCMI TypeTextuulm.typeDCMI
TypeErstveröffentlichunguulm.veroeffentlichung
CategoryPublikationenuulm.category
In cooperation withCSIRO, ARRC, Perth, WAuulm.cooperation


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record