ヒマラヤ山脈で発生した火災で発生した鉛やその他の元素は,空中に散らばっています
Science (New York, N.Y.)
|December 18, 1981
まとめ
木材とヤック糞のバイオマス燃焼は,ヒマラヤの空気を金属と炭素で大幅に汚染しています. この汚染エアロゾルは谷に集中し,上空の空気はより清潔です.
科学分野:
- 環境科学 環境科学
- 大気化学 大気化学
- 地質化学 地質化学
背景:
- バイオマス燃焼による室内および室外大気汚染は,開発途上地域において大きな懸念事項である.
- 木材やヤック糞などの伝統的な燃料は,ネパール・ヒマラヤの家庭用として広く使用されています.
- 燃焼による微粒子物質と微量元素は,空気質と人間の健康に影響を及ぼします.
研究 の 目的:
- ネパール・ヒマラヤの渓谷で,木材とヤック糞の燃焼による特定の元素と炭酸性エアロゾールの空気中の濃度に対する貢献を定量化するために.
- 空気中の濃度と雪の積立を比較することによって,汚染エアロゾールの空間的分布を調査する.
主な方法:
- 鉛,銅,アルミニウム,マグネシウム,元素炭素,有機炭素の濃度を測定するために空気サンプルを採取します.
- これらの汚染物質の堆積を決定するために,新鮮な雪の分析.
- 空気中の濃度と雪の濃度を比較して,エアロゾールの閉じ込めを推論する.
主要な成果:
- 木材とヤック糞の燃焼によって,空気中の鉛,銅,アルミニウム,マグネシウム,元素および有機炭素の濃度が大幅に上昇します.
- 空気中の汚染エアロゾルの濃度は,原始的な空気量と比較して,渓谷内ではかなり高い.
- スノーパックの分析は,測定された汚染物質は,主に渓谷の大気圏に限られていることを示しています.
結論:
- 国内バイオマスの燃焼は,研究されたネパール・ヒマラヤ渓谷における大気汚染の主な源である.
- 汚染エアロゾールは,主に地方的な現象で,谷底に限られている.
- 地元の排出源と汚染物質の輸送を理解することは,山岳地域における空気の質管理に不可欠です.
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