アラスカのネイティブで測定された放射能, 1962-1964年
まとめ
アナクトゥヴク・パス (Anaktuvuk Pass) のアラスカ北部の先住民は,1964年までにセシウム-137の体積が著しく増加したことを示した. これは,環境汚染物質が先住民族とその食糧源に及ぼす影響を強調しています.
科学分野:
- 環境科学 環境科学
- 放射線医学保健について
- 先住民族研究は,先住民族に関する研究である.
背景:
- 北極の生態系における高濃度の放射性同位体の存在は,原住民に危険をもたらす.
- セシウム137 (Cs-137) は,懸念される重要な環境汚染物質です.
研究 の 目的:
- 北アラスカの先住民のセシウム137の体積を測定するために.
- 時間の経過とともにセシウム137濃度の変化を評価する.
- 同じ集団とその食物源におけるナトリウム22の存在を調査する.
主な方法:
- 個体におけるセシウム137含有量の直接測定.
- 1962年,1963年,1964年のデータを比較した.
- 尿サンプルからナトリウム-22.2を分析する.
- エスキモス,鹿,カリブウにおけるナトリウム22の識別.
主要な成果:
- アナクトゥヴク・パスの成人は1964年に最も高い平均セシウム137負荷 (1280ナノキュリー) を有していた.
- これは1962年から200%,1963年から100%の増加を表しています.
- 最も高い個体負担 (3.0マイクロキュリー) は,カリブウの肉を消費する非ネイティブで発見されました.
結論:
- アラスカ北部の先住民のセシウム137濃度が著しく上昇しています.
- 食物摂取,特にカリブウからの摂取は,高いセシウム-137の負担に寄与する可能性がある.
- ナトリウム22の存在は,北極の食物連鎖におけるより広範な放射性汚染を示しています.
キーワード:
アラスカ州は,アラスカ州です.セシウム・アイソトペス (セシウム・アイソトペス) とはエスキモス (Eskimos) とはインディアン,北米人放射性廃棄物についてラジオメトリー (Radiometry) とはソジウムイソトープ (SODIUM ISTOPES) とは,ソジウムイソトープ (SODIUM ISTOPES) とは,ソジウムイソトープ (SODIUM ISTOPES) とは,ソジウムイソトープ (SODIUM ISTOPES) とは,ソジウムイソトープ (SODIUM ISTOPES) とは,ソジウムイソトープ (SODIUM ISTOPES) とは,ソジウムイソトープ (SODIUM ISTOPES) とは,ソジウムイソトープ (SODIUM ISTOPES) とはウリネ (Urin) とはさらに関連する動画
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