Chemical Composition of the Surface Layer of Atmospheric Aerosol of the Baikal Region Studied by Means of Secondary Ion Mass Spectrometry
VYACHESLAV P. IVANOV1, SERGEY N. TRUKHAN1,2, DMITRIY I. KOCHUBEY1, OLGA G. NETSVETAEVA3, LYUDMILA V. GOLOBOKOVA3 and TAMARA V. KHOJER3
1Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Pr. Akademika Lavrentyeva 5, Novosibirsk 630090 (Russia), E-mail: vpivanov@catalysis.nsk.su 2Novosibirsk State Architectural University, Ul. Leningradskaya 113, Novosibirsk 630090 (Russia) 3Limnological Institute, Siberian Branch of the Russian Academy of Sciences, Ul. Ulan-Batorskaya 3, Irkutsk 664033 (Russia)
Pages: 165-173
Abstract
Elemental and phase composition of the surface layers of two kinds of atmospheric aerosol sampled in Irkutsk, Listvyanka settlement and at the mountainous station Mondy was investigated by means of secondary ion mass spectrometry. The first kind includes the aerosol collected by pumping air through the filters, the second one includes aerosol particles captured while snow was falling, and afterwards collected on filters when pumping the melted snow. It was established that the action of water causes washing out Na, Ca and Ti from the surface layers and the formation of hydroaluminosilicates. Such an effect of water allows assuming that large range of scattering of the element concentrations in the surface layers of airborne aerosol particles is due to the action of atmospheric humidity, which depends on the residence time of aerosol in the atmosphere.
|