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Novel Tracer Method To Measure Isotopic Labeled Gas-Phase Nitrous Acid ((HONO)-N-15) in Biogeochemical Studies
Wu, Dianming1,2,6; Kampf, Christopher J.3; Poeschl, Ulrich3; Oswald, Robert1,7; Cui, Junfang4,5; Ermel, Michael1,7; Hu, Chunsheng2; Trebs, Ivonne1; Soergel, Matthias1
Corresponding AuthorWu, Dianming
AbstractGaseous nitrous acid (HONO), the protonated form of nitrite, contributes up to similar to 60% to the primary formation of hydroxyl radical (OH), which is a key oxidant in the degradation of most air pollutants. Field measurements and modeling studies indicate a large unknown source of HONO during daytime. Here, we developed a new tracer method based on gas-phase stripping-derivatization coupled to liquid chromatography-mass spectrometry (LC-MS) to measure the N-15 relative exceedance, psi(N-15), of HONO in the gas-phase. Gaseous HONO is quantitatively collected and transferred to an azo dye, purified by solid phase extraction (SPE), and analyzed using high performance liquid chromatography coupled to mass spectrometry (HPLC-MS). In the optimal working range of psi(N-15) = 0.2-0.5, the relative standard deviation of psi(N-15) is <4%. The optimum pH and solvents for extraction by SPE and potential interferences are discussed. The method was applied to measure (HONO)-N-15 emissions from soil in a dynamic chamber with and without spiking N-15 labeled urea. The identification of (HONO)-N-15 from soil with N-15 urea addition confirmed biogenic emissions of HONO from soil. The method enables a new approach of studying the formation pathways of MONO and its role for atmospheric chemistry (e.g., ozone formation) and environmental tracer studies on the formation and conversion of gaseous HONO or aqueous NO2- as part of the biogeochemical nitrogen cycle, e.g., in the investigation of fertilization effects on soil MONO emissions and microbiological conversion of NO2- in the hydrosphere.
KeywordKeywords Plus:Differential Optical-absorption Effluent Diffusion Denuder Ion Chromatography Biological-fluids Atmospheric Hono Nitric-acid Soil Nitrification Photolysis Nitrate
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedEngineering ; Environmental Sciences & Ecology
Indexed BySCI
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000339227500043
Funding OrganizationMax Planck Society ; Max Planck Graduate Center ; Johannes Gutenberg-Universitat Mainz (MPGC)
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Max Plank Inst Chem, Biogeochem Dept, D-55020 Mainz, Germany
2.Chinese Acad Sci, Inst Genet & Dev Biol, Ctr Agr Resources Res, Key Lab Agr Water Res, Shijiazhuang 050021, Hebei, Peoples R China
3.Max Plank Inst Chem, Multiphase Chem Dept, D-55020 Mainz, Germany
4.Natl Univ Ireland Univ Coll Dublin, UCD Sch Biosyst Engn, Dublin 4, Ireland
5.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
7.Johannes Gutenberg Univ Mainz, Inst Inorgan & Analyt Chem, D-55128 Mainz, Germany
Recommended Citation
GB/T 7714
Wu, Dianming,Kampf, Christopher J.,Poeschl, Ulrich,et al. Novel Tracer Method To Measure Isotopic Labeled Gas-Phase Nitrous Acid ((HONO)-N-15) in Biogeochemical Studies[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2014,48(14):8021-8027.
APA Wu, Dianming.,Kampf, Christopher J..,Poeschl, Ulrich.,Oswald, Robert.,Cui, Junfang.,...&Soergel, Matthias.(2014).Novel Tracer Method To Measure Isotopic Labeled Gas-Phase Nitrous Acid ((HONO)-N-15) in Biogeochemical Studies.ENVIRONMENTAL SCIENCE & TECHNOLOGY,48(14),8021-8027.
MLA Wu, Dianming,et al."Novel Tracer Method To Measure Isotopic Labeled Gas-Phase Nitrous Acid ((HONO)-N-15) in Biogeochemical Studies".ENVIRONMENTAL SCIENCE & TECHNOLOGY 48.14(2014):8021-8027.
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