ٷڡ ' '
۾忡 ٷڰ 60 κ ˷ '' ľ ʿϴٴ ǰ ִ.'ѱȸ' ο ڻ ٷκ ȯ濬 縯 ȯ б ǥ ۾忡 40 .
2018 4 40 Ĺ A ȣ ı ߴ. A 1994 4 õ ġ ֹ θ ƿ() ü B翡 и ִ ̹ ⸧ ۾Ƴ ô ۾ þ ߴ.
A 2015 ū ̻ ٰ 2016 9 μ 1 7 ߴµ, 2015 ķ ް ܵƴ.
1960~70뿡 ε ̿ ȯ, 絵 ȣϴ ٷڵ , ʴ ù .
̿ ο ڻ ߴµ, A ǹ, ˻ Ұ, ǵ , ۾ȯ ߽ ƴ.
A A "Bü 2015 8 ġ ߴµ, ġ ۵ Ȱ ʾ ȣ " B ִ " ġ ״ Űܿ ġ ʾҴ" ߴ.
θƿ ô и ⸦ и Ȯεƴ.
и '' и, ̻ȭԼ(SiO2) ü 12%, ̻ȭԼ ü ũٶƮ(cristobalite) 9% 뵿 50/ ƾ Ѵ.
B A ϴ и ô忡 23479 ߰, ȣ (PM10) 1434/̳ , ߿ 91/, ũٶƮ 106/ 뵿 50/ ũ Ҵ.
B ġ ĵ尡 ġ 12m/sec ̻ ؾ ϳ 0.3 m/sec Ұ и ʰ ־ 뵿ڵ ũ ƴ Ϲ ũ ģ ä ϰ ־ ǻ ״ ǰ ־.
ڻ " ʹ̼ó ʰ, ġ ʾ ۾ ٸ ٷڿԼ ǰ ̻ Ÿ ʾ, ʿϴ" .
A 2017 6 纸 û ߰, Ŀ ʺα ̴.