当前位置： SCI文献检索 > JOURNAL OF ENVIRONMENTAL RADIOACTIVITY期刊下所有文献 > Evaluation of technologically enhanced natural radiation near the coal-fired power plants in the Lodz region of Poland.

Evaluation of technologically enhanced natural radiation near the coal-fired power plants in the Lodz region of Poland.

Abstract：

:Radionuclide releases together with escaping fly ashes (from 45 x 10(6) kg in previous decades to 8 x 10(6) kg annually in 1996) from the main local and several small coal-fired power plants resulted in a relatively small increase in natural radioactivity levels in the Lodz region. The natural gamma terrestrial radiation dose rates (1 m above ground level) were measured at 82 points including in the vicinity of power plants, in the center of the town and on edge of the town. The average dose rate value for the first area was 36 +/- 1.2 nGy h (-1), whereas the same dose rate for the edge of town was slightly lower 30 +/- 0.9 nGy h (-1) but this difference was statistically significant. Further confirmation of the technologically slightly enhanced exposure of the local population to natural radionuclides was achieved by gamma-spectrometry measurement of the uranium and thorium decay series radionuclides in the surface soil profiles (up to 30 cm depth). The average increase of 226Ra and 232Th radionuclides in the top layer of soil (0-10 cm) according to the 20+/-30 cm depth layer was 21% and 17%, respectively. However, due to the relatively low levels of 232Th (14.3 Bq kg (-1)) and 238U (16.8 Bq kg (-1)) in this area, the annual average effective dose from the natural terrestrial radiation for the local population is also relatively low, 0.28 mSv only.

journal_name

J Environ Radioact

journal_title

Journal of environmental radioactivity

authors

Bem H,Wieczorkowski P,Budzanowski M

doi

10.1016/s0265-931x(01)00126-6

subject

Has Abstract

pub_date

2002-01-01 00:00:00

pages

191-201

issue

2

eissn

0265-931X

issn

1879-1700

pii

S0265-931X(01)00126-6

journal_volume

61

pub_type

杂志文章

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