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RISS 인기검색어
- 검색키워드
- 저자 : Masanori Gamou (검색결과 2 건)
- 무료
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Useful components as an indicator of air quality in urban area
Kim Man Goo,Kazuo yagawa,Masanori Gamou,Noriko Yamamoto,Hidenari Inoue,Tsuneo Shirai 江原大學校 附設 環境硏究所 1992 環境硏究 Vol.9 No.-
端市大氣質の評術に有劾な化字物質を?藥するために高密度都市域における浮?粉じん中のタイヤトしッドおよび無機?類の濃度を1988年の春と1989年の夏に側定した. 大氣試料の捕集は人間活動の週期を考盧してサソプリソプ其間中4-8時間ごとに連續してった.本硏究では,?化物,硝酸?,硫酸?, アソモニウム?,ナトリウム?, ナトリウム?などの無機?類の垂直濃度分布を求め,タイヤド成分のそれらと比較?討した. その結果, 都市域の大氣中タイヤトレッド濃度の日および週?化は浮?粉じんのそれらと非常に類似しており, 自動車の通行量に代表される人問活動の周期によく一致していることがわった. これよりタイヤトレッド成分は都市大氣質の指標物質として有?であることが示された. The concentrations of tire trend and inorganic salts in suspended particulate matter were measured in the high density urban area in summer and spring (Aug. 1988 and March 1989). One of the sampling sites was located in the high density urban area of Shinjuku, Tokyo and another was in Hiyoshi, Yokohama about 20km south-west of Tokyo. The concentration and vertical distribution of cations such as ammonium and sodium ions as well as anions such as chloride, nitrate and sulfate ions were monitored and compared to those of tire tread in the urban area. A good correlation was found between the concentration levels of ammonium ions and those of sulfate ions. The variation of the concentrations of tire tread in the urban atmosphere is highly correlated to that of suspended particulate matter. The daily and weekly behavior of tire-tread particles in the high density urban area is explained by a cycle of human activities such as motor vehicles. A useful component for the evaluation of air quality was found to be tire tread by examining a correlation of the concentrations of tire tread to those of inorganic salts and to human activities in the urban area.
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Diurnal variations of tire tread concentration in particulate matter
Kim Man Goo,Kazuo yagawa,Masanori Gamou,Noriko Yamamoto,Hidenari Inoue,Tsuneo Shirai 江原大學校 附設 環境硏究所 1992 環境硏究 Vol.9 No.-
高密度都市域における浮?粉じんの拳動と入間活動の周期の開係を把握するため, 東京都新宿において夏孝?と春に李に浮?粉じん中のタイヤトレッド成分濃度の?時?化を調べた. その結果, タイヤトレッド成分の大氣中は濃度は?間に高く夜間に低いこと, また日曜日より平日に高くなることがわかった. この濃度?化の?向は都市域における人間活動の週期とよく一致していた. 一方, 都心より約 20km離れた橫浜市日吉における大氣中タイヤトレッ濃度は風向により?化し, 特に北西および北東の風の日に高かった. さらに, 浮?粉じんの垂直分布の測定から, 大氣中のタイヤトレッドは他の浮?粉じんよりも粒?が大きいことが示された. The Daily and weekly variations of the concentration of tire tread in the atmosphere were measured at the high density urban area in Shinjuku, Tokyo in summer and spring. The air samples were continuously collected through the monitoring periods with a 4~8 h sampling cycle to discuss the variations of the concentrations of tire tread in relation to a fundamental cycle of human activities. The concentration of tire tread in the urban air was clearly high on the day time compared to that in the night and higher weekdays than Sunday. These tendencies are in accordance with a cycle of human activities or a cycle of daily life in the urban area. The concentration to tire tread in Hiyoshi, Yokohama located about 20km from the center of Tokyo depends on the direction of the wind. Particularly, it was high when the wind came from the north-west and the north-east. The vertical distribution of tire tread in the atmosphere indicated that the particle sizes of tire tread are larger than those of suspended particulate matter other than rubber particles.
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