Coupling a Knudsen reactor with the short lived radioactive tracer 13N for atmospheric chemistry studies

Schreiber, S.; Kerbrat, M.; Huthwelker, T.; Birrer, M.; Ammann, M.
March 2013
Review of Scientific Instruments;Mar2013, Vol. 84 Issue 3, p035101
Academic Journal
A Knudsen cell flow reactor was coupled to an online gas phase source of the short-lived radioactive tracer 13N to study the adsorption of nitrogen oxides on ice at temperatures relevant for the upper troposphere. This novel approach has several benefits over the conventional coupling of a Knudsen cell with a mass spectrometer. Experiments at lower partial pressures close to atmospheric conditions are possible. The uptake to the substrate is a direct observable of the experiment. Operation of the experiment in continuous or pulse mode allows to retrieve steady state uptake kinetics and more details of adsorption and desorption kinetics.


Related Articles

  • Measurement of diffusion coefficients by radioanalysis. Das, H. A. // Journal of Radioanalytical & Nuclear Chemistry;Sep2007, Vol. 273 Issue 3, p753 

    Radioanalysis, more particularly the use of radiotracers, enables measurement of coefficients of mass- and self-diffusion by simple benchtop experiments. They are related to environmental inquiries and materials science mainly Current procedures are surveyed here.

  • Diffusion of Sr, Cs, Co and I in argillaceous rock as studied by radiotracers. Mell, P.; Megyeri, J.; Riess, L.; Máthé, Z.; Hámos, G.; Lázár, K. // Journal of Radioanalytical & Nuclear Chemistry;May2006, Vol. 268 Issue 2, p411 

    Diffusions of85Sr,137Cs,60Co and125I radionuclides have been studied in borecore samples from Boda siltstone/claystone formation (BCF) under ambient and in situ conditions. In-diffusion (85Sr,137Cs,60Co and125I) and through-diffusion measurements (125I) were performed at ambient conditions, and...

  • State of Art in 11C Labelled Radiotracers Synthesis. Szlosek-Pinaud, M.; Allard, M.; Fouquet, E.; James, D. // Current Medicinal Chemistry;2008, Vol. 15 Issue 3, p235 

    Positron Emission Tomography has become a powerful scientific and clinical tool probing biochemical processes in the human body. Their clinical applications have proven to be vital in the evaluation and diagnosis of diseases. This is due, in large part, to advances in instrumentation and...

  • Application of 129I as an environmental tracer. Xiaolin Hou // Journal of Radioanalytical & Nuclear Chemistry;Oct2004, Vol. 262 Issue 1, p67 

    129I is produced naturally by cosmic-ray spallation of Xe and by spontaneous fission of 238U. In the environment 129I is mainly due to nuclear weapon tests and reprocessing plants. The high water solubility of iodine makes 129I a good oceanographic tracer. Long residence time and large air...

  • Radiotracer Diagnostics of Graphite Intercalation Compounds with Sulfuric and Acetic Acids. Maksimova, N. V.; Leshin, V. S.; Mandrugin, A. A.; Korobkov, V. I.; Sorokina, N. E.; Shornikova, O. N.; Avdeev, V. V. // Inorganic Materials;Oct2004, Vol. 40 Issue 10, p1035 

    The electrochemical intercalation of graphite in H2SO4�CH3COOH solutions is investigated by the radiotracer method in combination with autoradiography. The results attest to the formation of a stage I ternary intercalation compound in the solutions containing 60 and 80 wt % H2SO4 and stage...

  • trac·er.  // American Heritage Student Science Dictionary;2009, p347 

    A definition for the term "tracer" is presented. It refers to an identifiable substance, such as a dye or radioactive isotope, that can be followed through the course of a mechanical, chemical, or biological process. Tracers are used to provide information about details of the process or about...

  • Comparison of lesion detection and quantitation of tracer uptake between PET from a simultaneously acquiring whole-body PET/MR hybrid scanner and PET from PET/CT. Wiesmüller, Marco; Quick, Harald; Navalpakkam, Bharath; Lell, Michael; Uder, Michael; Ritt, Philipp; Schmidt, Daniela; Beck, Michael; Kuwert, Torsten; Gall, Carl // European Journal of Nuclear Medicine & Molecular Imaging;Jan2013, Vol. 40 Issue 1, p12 

    Purpose: PET/MR hybrid scanners have recently been introduced, but not yet validated. The aim of this study was to compare the PET components of a PET/CT hybrid system and of a simultaneous whole-body PET/MR hybrid system with regard to reproducibility of lesion detection and quantitation of...

  • In vivo assessment of dynamics of various elements in living rat by using a multitracer. Matsumoto, K.; Ui, I.; Hirunuma, R.; Enomoto, S.; Endo, K. // Journal of Radioanalytical & Nuclear Chemistry;Jan2003, Vol. 255 Issue 1, p143 

    Time series of the distribution of bio-trace elements in the upper abdomen of living rats were examined using the in vivo multitracer analysis technique. The in vivo dynamics of the elements were estimated by comparison with the distribution of 74As. Vanadium, Mn, Fe, Co, Zn, Se, and Rb were...

  • radiolabel.  // Taber's Cyclopedic Medical Dictionary;2005, p1844 

    A definition of the term "radiolabel" is presented. It refers to a radioactive tag.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics