SOURCES OF CS-137, SR-90 AND TC-99 IN THE EAST GREENLAND CURRENT

被引：32

作者：

DAHLGAARD, H

机构：

[1] Risø National Laboratory, DK-4000 Roskilde

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 1994年 / 25卷 / 1-2期

关键词：

D O I：

10.1016/0265-931X(94)90006-X

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Concentrations in water of Tc-99, Chernobyl-Cs-137 (Cs-134), total Cs-137, ann Sr-90 from depth profiles, including several water masses at 71 degrees N between East Greenland and Jan Mayen and in the Denmark Strait from 1988 and 1990, are discussed in the background of changing sources. A major surface water mass in the area is the Polar Water reflecting the radionuclide concentrations in the upper layer of the Arctic Ocean. It appears that the present levels may well be explained by pre-1970 sources including early Soviet discharges and global fallout, the European reprocessing facilities, mainly Sellafield, and a Chernobyl contribution. There is no indication of significant additional sources in the present material. However, the effect of additional sources may be masked under the fluctuating European contribution adding significantly to the uncertainty.

引用

页码：37 / 55

页数：19

共 24 条

[1]

Aarkrog, The radiological impact of the Chernobyl debris compared with that from nuclear weapons fallout, J. Environ. Radioactivity, 6, pp. 151-162, (1988)

[2]

Aarkrog, Chernobyl-related monitoring and comparison with fallout data, Proc. Seminar on Radiological Exposure of the Population of the European Community from Radioactivity in North European Marine Waters, pp. 229-249, (1989)

[3]

Aarkrog, Dahlgaard, Hallstadius, Hansen, Holm, Radiocaesium from Sellafield effluents in Greenland water, Nature, 304, pp. 49-51, (1983)

[4]

Aarkrog, Dahlgaard, Hallstadius, Holm, Mattson, Rioseco, Time trend of 99Tc in seaweed from Greenland waters, Proc. Seminar on Technetium in the Environment, pp. 69-78, (1986)

[5]

Aarkrog, Boelskifte, Dahlgaard, Duniec, Hallstadius, Holm, Smith, Technetium-99 and caesium-134 as long distance tracers in Arctic waters, Estuarine, Coastal & Shelf Sci., 24, pp. 637-647, (1987)

[6]

Aarkrog, Buch, Chen, Christensen, Dahlgaard, Hansen, Holm, Nielsen, Environmental Radioactivity in the North Atlantic Region including the Faroe Islands and Greenland 1987, Report RISØ-R-564, (1989)

[7]

Aarkrog, Buch, Chen, Christensen, Dahlgaard, Hansen, Holm, Nielsen, Environmental Radioactivity in the North Atlantic Region Including the Faroe Islands and Greenland 1988 and 1989, Report Risø-R-571, (1992)

[8]

Aakrog, Buch, Chen, Christensen, Dahlgaard, Hansen, Holm, Nielsen, Environmental Radioactivity in the North Atlantic Region Including the Faroe Islands and Greenland 1990 and 1991, Report Risø-R-622, (1993)

[9]

Chen, Dahlgaard, Hansen, Aarkrog, Determination of 99Tc in environmental samples by anion exchange and liquid-liquid extraction at controlled valency, Anal. Chim. Acta, 228, pp. 163-167, (1990)

[10]

Chen, Dahlgaard, Nielsen, Determination of 99Tc in sea water at ultra low levels, Anal. Chim. Acta, 285, pp. 177-180, (1994)

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