ポロニウム-210:タバコの放射性元素であるポロニウム-210は,たばこに含まれる放射性元素である
Science (New York, N.Y.)
|January 17, 1964
まとめ
タバコの煙に含まれるポロニウム-210 (Po-210) は,喫煙者の肺に相当量の放射線を放出する. この内部放射線被曝は,定期的に喫煙する人の肺がんの発症に寄与する可能性があります.
科学分野:
- 環境衛生 環境衛生 環境衛生
- 放射線生物学 放射線生物学
- 腫瘍学 腫瘍学
背景:
- ポロニウム-210 (Po-210) は,天然に存在する放射性同位体で,タバコの植物で汚染物質として発見されています.
- Po-210からのアルファ粒子の放出は,吸入時に内部放射線被曝を引き起こす.
- タバコの喫煙は,支氣管がんの主要な危険因子です.
研究 の 目的:
- 煙草の煙で吸入されたポロニウム-210から,支氣管の表皮への放射線量を定量化するために.
- 喫煙者における肺がんの発症に対するポウ-210放射線の潜在的貢献を評価する.
主な方法:
- タバコの煙のPo-210含有量に基づいて,支氣管上皮質への放射線用量の計算.
- Po-210放射線用量の背景放射線用量との比較.
主要な成果:
- タバコを吸う喫煙者は,毎日2パックのタバコを吸い込むと,Po-210からの放射線量は,バックグラウンドソースの少なくとも7倍以上になります.
- bronchial epitheliumの局所的な領域は,Po-210から25年以上にわたって1000rem以上の投与を受けることができます.
- 吸入されたPo-210からの放射線量は有意である.
結論:
- 煙草の煙中のポロニウム-210からの放射線は, bronchial がんの発生の重要な要因です.
- タバコの煙によるPo-210の曝露を減らすことは,喫煙者のがんリスクを軽減することができます.
キーワード:
肺のネオプラズマについてネオプラズマ,放射線誘導によるポロニウム (Polonium) とは,ポロニウム (Polonium) とは,ポロニウム (Polonium) とはタバコ (Tobacco) とは毒理学レポートさらに関連する動画
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