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Polonium-210 has been measured in the tracheobronchial tree and parenchyma of cigarette smokers and nonsmokers in order to determine whether this ..cap alpha.. emitter is retained in smokers. The ratio of /sup 210/Po concentration in the tracheobronchial tree (T) to that in the lung parenchyma (P) in nonsmokers is T/P = 2.7 +- 0.5. The ratio in smokers is T/P = 1.1 +- 0.2. The difference in these ratios can be related to retention of /sup 210/Po, or its /sup 210/Pb precursor in the parenchymal tissue. About 5 pCi deposited and retained on alveolar surfaces and an average excess of 0.3 pCi /sup 210/Po retained on the tracheobronchial tree is estimated for smokers. Measurements in exsmokers result in a ratio (T/P) = 0.8 +- 0.4 and is possibly related to long-term retention of deposited /sup 210/Pb in alveolar tissue.
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| Authors: |
Cohen, B.S.;
Eisenbud, M.;
Wrenn, M.E.;
Harley, N.H.
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| Publication Date: | 1979 Jul 01 |
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| OSTI Identifier: | 5615708 |
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| Resource Type: | Journal Article |
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| Resource Relation: | Journal Name: Radiat. Res.; (United States); Journal Volume: 19:1 |
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| Research Org: | New York Univ. Medical Center, NY |
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| Country of Publication: | United States |
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| Language: | English |
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| Format: | Size: Pages: 162-168 |
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| Other Number(s): | Journal ID: CODEN: RAREA |
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| Subject: | 63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BRONCHI; RADIOCHEMICAL ANALYSIS; RADIONUCLIDE KINETICS; LEAD 210; TISSUE DISTRIBUTION; LUNGS; POLONIUM 210; TRACHEA; COMPARATIVE EVALUATIONS; DEPOSITION; EXPERIMENTAL DATA; INHALATION; MAN; QUANTITY RATIO; TABLES; TOBACCO SMOKES; AEROSOLS; ALPHA DECAY RADIOISOTOPES; ANIMALS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BODY; CHEMICAL ANALYSIS; COLLOIDS; DATA; DATA FORMS; DAYS LIVING RADIOISOTOPES; DISPERSIONS; DISTRIBUTION; EVEN-EVEN NUCLEI; HEAVY NUCLEI; INFORMATION; INTAKE; ISOTOPES; LEAD ISOTOPES; MAMMALS; NUCLEI; NUMERICAL DATA; ORGANS; POLONIUM ISOTOPES; PRIMATES; RADIOISOTOPES; RESIDUES; RESPIRATORY SYSTEM; SMOKES; SOLS; VERTEBRATES; YEARS LIVING RADIOISOTOPES |
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| Update Date: | 2009 Dec 16 |
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