mgbr2 ra nabr

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Abstract

The reactive uptake of NO3 radicals on coatings of individual X salts and X/NaCl binary mixtures (X = MgCl2 · 6H2O, MgBr2 · 6H2O, NaBr, and NaI), typical reactive components of sea salt, was studied using a flow reactor with a movable salt-coated insert in combination with a mass spectrometer for detecting the gaseous reactant. The dependences of the uptake coefficient of NO3 on the individual X salts on the NO3 concentration (1011–1013 cm−3) and of the uptake coefficient of NO3 on the X/NaCl binary mixtures on the nội dung of the doping salt in the mixture were obtained. A parametric mô tả tìm kiếm of the experimental data was proposed, which makes it possible đồ sộ extrapolate the uptake coefficient đồ sộ small concentrations of NO3, typical of the troposphere. It was experimentally shown that, at the relative molar concentrations of the indicated salts in natural seawater of 3.4 × 10−2, 7.7 × 10−4, 6.7 × 10−4, and 4.1 × 10−4, their relative fraction in the surface layer of dry sea salt is several orders of magnitude higher: 0.88, 3.8 × 10−2, 1.4 × 10−2, and 4.4 × 10−3, respectively. Due đồ sộ the surface segregation of the X doping salts in the X/NaCl binary mixtures, their contributions đồ sộ the overall uptake are substantially higher: 95, 31, 41, and 2% for the indicated pairs.

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Authors and Affiliations

  1. Institute of Energy Problems of Chemical Physics (Chernogolovka Branch), Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia

    V. V. Zelenov, E. V. Aparina & S. V. Ivashin

  2. Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina 4, Moscow, 119991, Russia

    Yu. M. Gershenson

Additional information

Original Russian Text © V.V. Zelenov, E.V. Aparina, S.V. Ivashin, Yu.M. Gershenson, 2008, published in Khimicheskaya Fizika, 2008, Vol. 27, No. 5, pp. 87–96.

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Zelenov, V.V., Aparina, E.V., Ivashin, S.V. et al. Steady-state uptake of NO3 on NaBr/NaCl, NaI/NaCl, MgCl2 · 6H2O/NaCl, MgBr2 · 6H2O/NaCl binary salt coatings. Russ. J. Phys. Chem. B 2, 408–417 (2008). https://doi.org/10.1134/S1990793108030123

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  • DOI: https://doi.org/10.1134/S1990793108030123

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Keywords

  • Binary Mixture
  • NaBr
  • Surface Segregation
  • Crystal Hydrate
  • Inlet Port