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dc.contributor.authorMilligan, D.en
dc.contributor.authorWilson, P.en
dc.contributor.authorMautner, Michaelen
dc.contributor.authorFreeman, C.en
dc.contributor.authorMcEwan, M.en
dc.contributor.authorClough, Timothy J.en
dc.contributor.authorSherlock, Robert R.en
dc.date.accessioned2008-05-29T04:34:32Z
dc.date.issued2002en
dc.identifier.citationMilligan, D. B., Wilson, P. F., Mautner, M. N., Freeman, C. G., McEwan, M. J., Clough, T. J. & Sherlock, R. R. (2002). Real-time, high-resolution quantitative measurement of multiple soil gas emissions: Selected ion flow tube mass spectrometry. Journal of Environmental Quality, 31(2), 515-524.en
dc.identifier.issn0047-2425en
dc.identifier.urihttps://hdl.handle.net/10182/510
dc.description.abstractA new technique is presented for the rapid, high-resolution identification and quantification of multiple trace gases above soils, at concentrations down to 0.01 µL L⁻¹ (10 ppb). The technique, selected ion flow tube mass spectrometry (SIFT–MS), utilizes chemical ionization reagent ions that react with trace gases but not with the major air components (N₂, O₂, Ar, CO₂). This allows the real-time measurement of multiple trace gases without the need for preconcentration, trapping, or chromatographic separation. The technique is demonstrated by monitoring the emission of ammonia and nitric oxide, and the search for volatile organics, above containerized soil samples treated with synthetic cattle urine. In this model system, NH₃ emissions peaked after 24 h at 2000 nmol m⁻² s⁻¹ and integrated to approximately 7% of the urea N applied, while NO emissions peaked about 25 d after urine addition at approximately 140 nmol m⁻² s⁻¹ and integrated to approximately 10% of the applied urea N. The monitoring of organics along with NH₃ and NO was demonstrated in soils treated with synthetic urine, pyridine, and dimethylamine. No emission of volatile nitrogen organics from the urine treatments was observed at levels >0.01% of the applied nitrogen. The SIFT method allows the simultaneous in situ measurement of multiple gas components with a high spatial resolution of <10 cm and time resolution <20 s. These capabilities allow, for example, identification of emission hotspots, and measurement of localized and rapid variations above agricultural and contaminated soils, as well as integrated emissions over longer periods.en
dc.format.extent515-524en
dc.language.isoenen
dc.publisherAmerican Society of Agronomy, Crop Science Society of America, and Soil Science Society of Americaen
dc.relationThe original publication is available from - American Society of Agronomy, Crop Science Society of America, and Soil Science Society of Americaen
dc.rightsCopyright © 2002 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of Americaen
dc.subjectsoil gas emissionsen
dc.subjectmeasurementen
dc.subjectselected ion flow tube mass spectrometryen
dc.subjectSIFT-MSen
dc.subjectAgronomy & Agricultureen
dc.subject.meshIonsen
dc.subject.meshGasesen
dc.subject.meshAir Pollutantsen
dc.subject.meshSoil Pollutantsen
dc.subject.meshSensitivity and Specificityen
dc.subject.meshEnvironmental Monitoringen
dc.subject.meshVolatilizationen
dc.subject.meshAgricultureen
dc.subject.meshMass Spectrometryen
dc.titleReal-time, high-resolution quantitative measurement of multiple soil gas emissions : selected ion flow tube mass spectrometryen
dc.typeJournal Article
dc.subject.marsdenFields of Research::300000 Agricultural, Veterinary and Environmental Sciences::300100 Soil and Water Sciencesen
dc.subject.marsdenFields of Research::300000 Agricultural, Veterinary and Environmental Sciences::300800 Environmental Scienceen
lu.contributor.unitLincoln Universityen
lu.contributor.unitFaculty of Agriculture and Life Sciencesen
lu.contributor.unitDepartment of Soil and Physical Sciencesen
dc.subject.anzsrc04 Earth Sciencesen
dc.subject.anzsrc05 Environmental Sciencesen
dc.subject.anzsrc06 Biological Sciencesen
dc.relation.isPartOfJournal of Environmental Qualityen
pubs.organisational-group/LU
pubs.organisational-group/LU/Agriculture and Life Sciences
pubs.organisational-group/LU/Agriculture and Life Sciences/SOILS
pubs.organisational-group/LU/Research Management Office
pubs.organisational-group/LU/Research Management Office/QE18
pubs.publication-statusPublisheden
pubs.volume31en
lu.identifier.orcid0000-0002-5978-5274


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