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

I. B. Mizandrontsev; V. V. Kozlov; V. G. Ivanov; K. M. Kucher; E. S. Korneva; N. G. Granin

doi:10.31951/2658-3518-2019-A-6-316

Authors

I. B. Mizandrontsev ¹
V. V. Kozlov ²
V. G. Ivanov ¹
K. M. Kucher ¹
E. S. Korneva ¹
N. G. Granin 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

DOI:

https://doi.org/10.31951/2658-3518-2019-A-6-316

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.