The synthesis of 13N labeled atmospheric gases via proton irradiation of a high pressure oxygen target

Parks, Norris J.; Peek, N.F.; Goldstein, Elliot

doi:10.1016/0020-708x(75)90026-5

Cited by 18 publications

(3 citation statements)

References 12 publications

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“…HN03, whereas NO, is restricted to the sum of NO and N02.15) A gas target of 70-mm length consisting of a mixture of helium (580 mL min-1, 99.9999%) and oxygen (100 mL min-1,99.5%) was bombarded by protons. The proton beam (250 nA) with an energy of 14 MeV was produced by the Philips cyclotron at the Paul Scherrer Institute. At this low bombarding energy I3N is the predominant radioactive product.…”

Section: Methodsmentioning

confidence: 99%

Use of positron-emitting nitrogen-13 for studies of the selective reduction of nitric oxide by ammonia over vanadia/titania catalyst at very low reactant concentrations

Baltensperger¹,

Ammann²,

Bochert³

et al. 1993

J. Phys. Chem.

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Section: Methodsmentioning

confidence: 99%

Use of positron-emitting nitrogen-13 for studies of the selective reduction of nitric oxide by ammonia over vanadia/titania catalyst at very low reactant concentrations

Baltensperger¹,

Ammann²,

Bochert³

et al. 1993

J. Phys. Chem.

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“…13 NO 2 Production. The nuclear reaction 16 O(p,α) 13 N was applied in order to produce 13 NO y (in the following, NO y denotes the sum of all reactive nitrogen oxides including, e.g., HNO 3 , whereas NO x is restricted to the sum of NO and NO 2 ). A gas target consisting of a mixture of helium (490 cm 3 min -1 at STP, 99.9999%) and oxygen (10 cm 3 min -1 at STP, 99.9995%) in a quartz cylinder of 70 mm length was irradiated with protons .…”

Section: Methodsmentioning

confidence: 99%

Heterogeneous Chemical Processing of ¹³NO₂ by Monodisperse Carbon Aerosols at Very Low Concentrations

et al. 1996

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The heterogeneous reaction of NO 2 with different carbon aerosol particles was investigated in situ. The NO 2 was labeled with the + -emitter 13 N (half-life 10.0 min) which allowed application of NO 2 at very low concentrations. The carbon aerosol was either produced by a spark discharge generator using graphite electrodes or by a brush generator resuspending commercial soot material. Monodisperse size cuts between 50-and 490-nm diameter were selected and mixed with the 13 NO 2 . After a defined reaction time, the different reaction products were separated by means of selective traps and detected on-line by γ-spectrometry. A sticking coefficient for chemisorption of NO 2 between 0.3 × 10 -4 and 4.0 × 10 -4 and a rate constant for the reduction of adsorbed NO 2 to NO(g) between 4.0 × 10 -4 and 9.4 × 10 -4 s -1 were determined for both aerosols. The sticking coefficient obtained in this study in situ with aerosol particles is 2 orders of magnitudes smaller than the uptake coefficient recently reported with bulk carbon material.

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“…The use of 13 N in tracer studies is not so widespread as is the case for 11 C. Parks et al [6] suggested to use the reaction 16 13 N in a high pressure oxygen target to produce Brought to you by | New York University Bobst Library Technical Services Authenticated Download Date | 5/28/15 2:56 PM 13 N-labelled atmospheric nitrogen species. Sajjad et al [7] investigated the excitation function of this reaction in more detail.…”

Section: Introductionmentioning

confidence: 98%

Using¹³N as tracer in heterogeneous atmospheric chemistry experiments

Amman¹

2001

Radiochimica Acta

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Current techniques aiming to study heterogeneous atmospheric chemistry under realistic conditions are often subject to restrictions caused by the low amount of processed material, the complex composition of gas and condensed phases and interference issues. The use of the short-lived tracer 13 N enables laboratory experiments pertaining to the atmospheric chemistry of nitrogen oxides to be performed at extremely low concentrations, ambient humidity and pressure. 13 N was produced through 16 O( p, α) 13 N reaction in a gas target in continuous mode, and transported as 13 NO in a carrier gas to the chemistry laboratory through a 70 m long capillary. Several gas-phase and surface chemical routines allowed converting 13 NO into other forms of oxidized nitrogen. Chemical separation and detection was achieved through chemically specific absorption reactions on the coatings of denuders, which additionally allowed separating gas-phase species from their particulate counterparts. In a first application, the reversible adsorption of NO 2 on a solid NaCl surface was investigated, from which an adsorption enthalpy of 28 kJ/mol was derived. As an example of a reaction with aerosol particles in gas suspension, the reaction of 13 N-labelled HNO 3 with sea-salt particles was studied using an aerosol flow reactor.

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The synthesis of 13N labeled atmospheric gases via proton irradiation of a high pressure oxygen target

Cited by 18 publications

References 12 publications

Use of positron-emitting nitrogen-13 for studies of the selective reduction of nitric oxide by ammonia over vanadia/titania catalyst at very low reactant concentrations

Use of positron-emitting nitrogen-13 for studies of the selective reduction of nitric oxide by ammonia over vanadia/titania catalyst at very low reactant concentrations

Heterogeneous Chemical Processing of ¹³NO₂ by Monodisperse Carbon Aerosols at Very Low Concentrations

Using¹³N as tracer in heterogeneous atmospheric chemistry experiments

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The synthesis of 13N labeled atmospheric gases via proton irradiation of a high pressure oxygen target

Cited by 18 publications

References 12 publications

Use of positron-emitting nitrogen-13 for studies of the selective reduction of nitric oxide by ammonia over vanadia/titania catalyst at very low reactant concentrations

Use of positron-emitting nitrogen-13 for studies of the selective reduction of nitric oxide by ammonia over vanadia/titania catalyst at very low reactant concentrations

Heterogeneous Chemical Processing of 13NO2 by Monodisperse Carbon Aerosols at Very Low Concentrations

Using13N as tracer in heterogeneous atmospheric chemistry experiments

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Heterogeneous Chemical Processing of ¹³NO₂ by Monodisperse Carbon Aerosols at Very Low Concentrations

Using¹³N as tracer in heterogeneous atmospheric chemistry experiments