Organic Geochemical Studies on Sinking Material of the Atmosphere and Airborne Particulates in Lanzhou City

Duan Yi; Peng Lin; Cao Manlin; Zhang Cunjie

In this paper, Organic geochemistry of sinking material of the atmosphere and airborne particulates in Lanzhou was studied.The result show that sinking materal of the atmosphere in L.anzhou contain higher organic matter. n-Alkanes in sinking materat,with low odd-over-even predominance, are dominated by short chain component. Saturated n-fatty acids in sinking materaland airborne particulates have a strong even-over-odd predominance and short saturated n-fatty acids are major component.Unsaturated and iso-fatty acids are present in low abundance. Distuibution of n-alkanes and fatty acid indicate that organic mat-ter in sinking material of the atmosphere and airborne patricuiates in Lanzhou are derived mainly from fossil fuel contamination andpartly from vascular plants and mieroorganisms

1. Lanzhou Institute of Geology,Chinese Academy of Sciences,Lanzhou 730000;

2. Geomeasurement Deperment of Shanxi Mining Institute,Taiyuan 030024;

3. Lanzhou Environmental Monitoring Centre,Lanzhou 730000

Received Date: 1997-01-01

Key words:

sinking material atmosphere and airborne particulates /
n-alkanes fatty acids /
organic matter /
source

Abstract: In this paper, Organic geochemistry of sinking material of the atmosphere and airborne particulates in Lanzhou was studied.The result show that sinking materal of the atmosphere in L.anzhou contain higher organic matter. n-Alkanes in sinking materat,with low odd-over-even predominance, are dominated by short chain component. Saturated n-fatty acids in sinking materaland airborne particulates have a strong even-over-odd predominance and short saturated n-fatty acids are major component.Unsaturated and iso-fatty acids are present in low abundance. Distuibution of n-alkanes and fatty acid indicate that organic mat-ter in sinking material of the atmosphere and airborne patricuiates in Lanzhou are derived mainly from fossil fuel contamination andpartly from vascular plants and mieroorganisms

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Reference (12)

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Organic Geochemical Studies on Sinking Material of the Atmosphere and Airborne Particulates in Lanzhou City

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