A 20-year follow-up study on the effects of long-term exposure to thorium dust / 中华医学杂志(英文版)
Chinese Medical Journal
;
(24): 692-694, 2003.
Article
in English
| WPRIM
| ID: wpr-324431
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the possible effects of long-term exposure to dust containing thorium and thoron progeny on dust-exposed miners.</p><p><b>METHODS</b>A negative, high voltage, exhaled thoron progeny measurement system was used to estimate the miners' thorium lung burden.</p><p><b>RESULTS</b>The highest thorium lung burden of 638 miners was 11.11 Bq. The incidence of stage 0(+) pneumoconiosis was higher among dust-exposed miners. Lung cancer mortality of the dust-exposed miners was significantly higher than that of controls (P < 0.005).</p><p><b>CONCLUSION</b>There is a difference in cancer rates between those who have long-term exposure to dust containing thorium (in which carcinogenic ThO(2) and SiO(2) exist) and thoron progeny and those who have not.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Body Burden
/
China
/
Epidemiology
/
Follow-Up Studies
/
Occupational Exposure
/
Thorium
/
Air Pollutants, Radioactive
/
Dust
/
Lung Neoplasms
/
Mining
Type of study:
Observational study
/
Prognostic study
Limits:
Humans
Country/Region as subject:
Asia
Language:
English
Journal:
Chinese Medical Journal
Year:
2003
Type:
Article
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