Measurement of air pollution in Norilsk
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概要
- 論文の詳細を見る
Air pollution, deposition and its accumulation in surface soil were investigated in Norilsk, Russia. Concentrations of SO_2 and NO_2 gas were measured in Norilsk by using passive samplers 29 July-4 August 1993 and 31 July-4 August 1995. SO_2 concentrations were more than 100ppb in downtown Norilsk; the highest value was 260ppb in 1995. On the other hand, NO_2 concentrations were rather lower than those in Sapporo, Japan. Aerosol chemical species were continuously measured from summer 1993 to summer 1995 at Norilsk Experimental Center in downtown Norilsk. Major components of aerosol chemical species were sulfate (0.9-16μgm^<-3>), organics (1.6-12μgm^<-3>) and elemental carbon (0.1-4.2μgm^<-3>). The ranges of heavy metal concentrations (ng m^<-3>) were Cu, 2-300; Pb, 0.5-83 and Ni, 1-48 with no significant seasonal variations, about ten times more than those in Sapporo. We also collected larch needles, mosses and soil samples to evaluate the deposition and accumulation of the air pollutants. The concentrations of heavy metal and sulfate in larch needles, mosses and surface soil samples decrease with distance from the center of Norilsk. Heavy metal concentrations in deep soil (20-30cm) were nearly equal to the global mean, whereas the concentrations in surface soil (5-10cm depth) were several times to hundreds times higher than those in deep soil (20-30cm depth). This suggests that the emitted pollutant has been deposited and accumulated in surface soil for 40 years, since the nickel-copper smelting companies started operations.
- 国立極地研究所の論文
著者
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Ohta Sachio
Graduate School of Engineering, Hokkaido University
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Makarov Vladimir
Permafrost Institute Siberian Branch Russian Academy Of Sciences
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OHTA Sachio
Lab. of Atmospheric Environ. Eng., Grad. School of Eng., Hokkaido Univ.
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Fukasawa Tatsuya
Graduate School of Engineering, Hokkaido University
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Enomoto Kyoichi
Toyo Engineering Corporation
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Murao Naoto
Graduate School of Engineering, Hokkaido University
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Yamagata Sadamu
Graduate School of Engineering, Hokkaido University
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Shimizu Tatsuo
Graduate School of Engineering, Hokkaido University
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Rastegaev Igor
Russian Academy of Engineering
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Yamagata S
Division Of Environment And Resource Engineering Graduate School Of Engineering Hokkaido Univ.
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Yamagata Sadamu
Graduate School Of Engineering Hokkaido University
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Murao Naoto
Division Of Environment And Resource Engineering Graduate School Of Engineering Hokkaido Univ.
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Murao Naoto
Graduate School Of Engineering Hokkaido University
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Murao Naoto
Dept. Of Sanitary And Environ. Engineering Hokkaido Univ.
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Ohta Sachio
Laboratory Of Atmospheric Environment Engineering Graduate School Of Engineering Hokkaido University
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Ohta Sachio
Lab. Of Atmospheric Environ. Eng. Grad. School Of Eng. Hokkaido Univ.
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Ohta Sachio
Graduate School Of Engineering Hokkaido University
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Fukasawa Tatsuya
Lab. Of Aquatic Environ. Eng. Grad. School Of Eng. Hokkaido Univ.
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Shimizu Tatsuo
Graduate School Of Engineering Hokkaido University
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