Quantitative estimation of dust fall and smoke particles in Quetta Valley

查看全文 作　　者：SAMI [1]Muhammad;WASEEM [1]Amir;AKBAR [1]Sher 机构地区：[1]Department of Chemistry, University of Balochistan, Quetta 87300, Pakistan 出　　处：《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》索引2006年第7卷第7期,共6页 基　　金：Project partly supported by University of Balochistan, Pakistan 摘　　要：Tightening of air quality standards for populated urban areas has led to increasing attention to assessment of air quality management areas, where violation of air quality standards occurs, and development of control strategies to eliminate such vio-lation of air quality standards. The Quetta urban area is very densely built and has heavy motorized traffic. The increase of emis-sions mainly from traffic and industry are responsible for the increase in atmospheric pollution levels during the last years. The dust examined in the current study was collected by both deposit gauge and Petri dish methods at various sites of Quetta Valley. Smoke particles were obtained by bladder method from the exhausts of various types of motor vehicles. The concentration of lead found in the smoke ranged from 1.5×10?6 to 4.5×10?6. 关 键 词：奎达流域 颗粒物质 降尘 烟尘 汽油 定量估计