まとめ
熱帯生物質の燃焼は大気中の炭酸ガスの主要な源であり,農村の大陸レベルに匹敵する. 新しい比率は,バイオマスと化石燃料を区別するのに役立ちます.
科学分野:
- 大気化学 大気化学
- 環境科学 環境科学
- エアロゾールサイエンス・サイエンス
背景:
- エアロゾールサンプルは,ハンブルクからモンテビデオへのクルーズで採取されました.
- これらのサンプルは,ヨーロッパ,サハラ,熱帯アフリカ,南米,開いた海洋地域を含む様々な地域の空気量を表しています.
研究 の 目的:
- 遠く離れた大西洋の大気圏の煙草炭素エアロゾールの発生源と構成を調査する.
- 煙草炭素の源として,バイオマスと化石燃料の燃焼を区別するための指標を特定する.
主な方法:
- さまざまな大気圏で収集されたエアロゾールサンプルを分析する.
- 空気質の起源を決定するために,逆転軌道の分析を使用しました.
- 測定された焦炭,総細炭,および過度の細カリウム濃度.
主要な成果:
- 大西洋の遠隔地の広い地域では,田舎の大陸レベルに似た,相当な焦炭濃度が見つかりました.
- 熱帯地域のバイオマスの燃焼は,大気中の炭酸ガスの主要な源泉として特定されました.
- エアロゾール中の余分な微細カリウムと灰炭の比率は,化石燃料の燃焼と対比してバイオマスによる相対的な貢献を示すことができます.
結論:
- バイオマスの燃焼は,世界の炭酸ガスのエアロゾールに大きく貢献しています.
- 余剰のカリウムと煙草の炭素の比率は,煙草のエアロゾールのソース配分のための貴重な指標です.
- 大西洋の大気中の有機炭素粒子は,主に大陸産である.
さらに関連する動画
10:22Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements
Published on: September 7, 2019
07:24Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer
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