대기 부유분진의 입경별 특성에 관한 연구

• 영문명: Study on Characteristics by Aerodynamic Diameter of Airborne Suspended Particulate Matters
• 발행기관: 한국환경보건학회
• 저자명: 김성천 강달선 차영희
• 간행물 정보: 『1. 한국환경보건학회지』제26권 제2호, 108~115쪽, 전체 8쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2000.06.30

영문 초록

The mass fraction of PM10 had a bimodal distribution in the middle of between 2.1 , and the average mass fraction of particles less than 2.1~3.1 was 54.1% for Pb and 890.8 ng/㎥ for Fe, respectively. For the concentration of PM10 and metallic elements by seasonal variation, PM10 showed bimodal distribution, while metallic elements showed different distributions by their sources. The ratios of fine particles to total mass were 0.45 for PM10, 0.41 for Cr, and 0.20 for Fe, 0.57 for Zn, 0.68 for Cd and 0.63 for Pb, respectively. That facts indicated that PM10, Zn, Cd, Cr and Pb were from anthropogenic sources, and Fe was from natural source. The geometric means and geometric standard deviations by seasonal variations were 3.6 , 2.31 in winter, 3.0 , 2.49 in spring, 2.7 , 2.03 in summer respectively. And, total efficiency of cascade impactor by seasonal variations were 49.6% in winter, 45.9% in spring and 44.5% in summer

키워드

Bimodal distribution Mass faction Anthropogenic source Geometric mean