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dc.contributor.authorLiu, Xinhong
dc.contributor.authorGao, Yan
dc.contributor.authorZhao, Yongqiang
dc.contributor.authorWang, Yan
dc.contributor.authorYi, Neng
dc.contributor.authorZhang, Zhenhua
dc.contributor.authorYan, Shaohua
dc.date.accessioned2018-07-27T01:01:19Z
dc.date.available2018-07-27T01:01:19Z
dc.date.issued2016
dc.identifier.issn0925-8574
dc.identifier.doi10.1016/j.ecoleng.2016.05.009
dc.identifier.urihttp://hdl.handle.net/10072/173849
dc.description.abstractThe gas trapping device method (GTD) is a relatively new method to measure N2 flux from waters. However, the non-equilibrium diffusion error and the reliability of GTD method compared to other previously established N2 flux measurement methods has not been evaluated. In this study, the diffusive error of GTD, coming from non-equilibrium N2 partial pressure between the headspace inside the gas sample bottle and the air, was estimated using a sterilization experiment. Moreover, the GTD and MIMS methods were compared for measuring N2 flux from water under similar conditions. The results showed that there were maximum diffusion errors of 2.99% in the sample bottles prefilled with pure Helium, while only 1.09–1.76% diffusion errors in bottles prefilled with other N2 standard gas (15% or 75%), indicating minor non-equilibrium diffusion errors. N2 fluxes from water measured by GTD and MIMS methods are quite similar under all three concentrations of nitrate (5.30, 10.55 and 17.25 mg L−1) and two levels of temperature (20 and 30 °C). Therefore, the GTD method offers a reliable alternative method to estimate N2 flux rate in aquatic ecosystem.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom9
dc.relation.ispartofpageto12
dc.relation.ispartofjournalEcological Engineering
dc.relation.ispartofvolume93
dc.subject.fieldofresearchEnvironmental Science and Management not elsewhere classified
dc.subject.fieldofresearchEarth Sciences
dc.subject.fieldofresearchEnvironmental Sciences
dc.subject.fieldofresearchEngineering
dc.subject.fieldofresearchcode050299
dc.subject.fieldofresearchcode04
dc.subject.fieldofresearchcode05
dc.subject.fieldofresearchcode09
dc.titleSupplemental tests of gas trapping device for N2 flux measurement
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorGao, Yan


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