NDLI: Photochemical generation of OH radical in water-extract of aerosol and aqueous solution of water-soluble gases in the air

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Photochemical generation of OH radical in water-extract of aerosol and aqueous solution of water-soluble gases in the air

Content Provider	Semantic Scholar
Author	Nomi, Sonia Naomi
Copyright Year	2012
Abstract	意義や目的を述べている。第 2 章では、東広島において 2008 年から 2010 年にかけて月 1 回合計 24 回大気試料を採取し、エアロゾルの水抽出画分およびガスの水溶性画分をそれぞれ分離して OH ラジカルの光化学的発生速度を求めた。その結果、大気エアロゾルの水抽出画分およびガス水溶性画分中 OH ラジカルの平均発生速度はそれぞれ 1.4 および 0.5 nmol h-1 m-3であり、硝酸イオン、亜硝酸イオン、過酸化水素の光分解からの発生寄与率は水抽出画分でそれぞれ 8.9、1.2、2.5%、水溶性画分で 4.5、0.7、1.2% であった。その他成分からの発生寄与率はガス水溶性画分で光フェントン反応から 42%、溶存有機物(おそらく腐植様物質)から 52%であった。OH ラジカルの生成速度の月毎の変動を解析したところ、季節変化は見られないものの、黄砂飛来時にはエアロゾル水抽出画分の OH ラジカルの生成速度が増加する傾向があることが確認された。黄砂時の OH ラジカル生成速度の増加は、黄砂粒子
File Format	PDF HTM / HTML
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Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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