| The assessment of heavy metal stream in the air basin of Yerevan |
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| 作者姓名： | Lilit V. Sahakyan |
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| 作者单位： | Center for Ecological Noosphere Studies National Academy of Sciences, Yerevan, Armenia |
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| 摘 要： | Yerevan-the capital city of Armenia used to be a highly developed industrial center whose enterprises were integrated into the former USSR＇s industrial network. For this, the USSR disintegration entailed stagnation of most plants. Lately, some of them resumed operating, new enterprises were created, conditioning qualitative and structural changes in the city＇s industrial complex. Naturally,first of all, such changes manifest themselves in the extent of the impact of operating plants upon the environment and the air basin. This atmo-geochemical research was performed through studying natural depositing medium - snow cover, as the composition of its insoluble fraction is identical to that of solid constituent of air pollutants. The solid phase was analyzed through the method of quantitative spectral analysis for a wide set of heavy metals. Based on the data on heavy metal contents in separate samples, specialized geochemical maps of the city＇s territory were produced applying GIS ArcView 3.2 a. These initial data allow to calculate in-day dust load per square kilometer -38.3 kg/sq, km＊day, respectively, for the whole of the city＇s territory （225 sq. km） -8.6 tons. Data on element contents in dust allow to calculate the load of separate elements throughout the city landscape; so in-day load of Zn is 2.3 kg, Cu 1.1 kg. The determined contents of heavy metals are standardized by the element background and the following ranked geochemical series of heavy metal contents in ambient dust throughout the city was made up： Mo-Ag-Sn-Zn-Ni-Cu-Cr-Pb. The maps clearly reflect the morphology and extent of pollution zones and the structure of pollution. To characterize complex pollution, we have calculated a Summary Index of Pollution （SIP） that represents the sum of heavy metal contents in samples standardized by the background.
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| 关 键 词： | 地球化学 重金属 环境污染 工业活动 |
The assessment of heavy metal stream in the air basin of Yerevan |
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| Lilit V. Sahakyan.The assessment of heavy metal stream in the air basin of Yerevan[J].Chinese Journal of Geochemistry,2006,25(B08):95-96. |
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| Abstract: | |
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| Keywords: | geochemistry urban site heavy metal contamination |
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