Dissolved methane in Lake Baikal: a modified technique for determining concentrations and vertical distribution in the water column

  • Mizandrontsev I.B. 1
  • Kozlov V.V. 2
  • Ivanov V.G. 1
  • Kucher K.M. 1
  • Korneva E.S. 1
  • Granin N.G. 1
  • 1 Limnological Institute, Siberian Branch of the Russian Academy of Sciences, Ulan-Batorskaya Str., 3, Irkutsk, 664033, Russia
    2 Matrosov Institute for System Dynamics and Control Theory of Siberian Branch of Russian Academy of Sciences, Lermontov Str., 134, Irkutsk, 664033, Russia
Keywords: methane dissolved in water, vertical distribution, Lake Baikal, modified method of static headspace analysis

Abstract

We have developed a modified method of headspace analysis of water samples with the control of temperature and total pressure in the gaseous phase of a closed heterogeneous system followed by a gas chromatographic measurement of methane concentration with the methane content in the lake water of < 500 nl СН4/L. Here, we describe the background concentrations and vertical distribution of dissolved methane in the water column of Lake Baikal, which were obtained for several years.

Published
2019-12-25
Section
Articles