Levels of Air Particulates With Different Diameters and the Distribution of Heavy Metals in the Particulates During the Period of Heating Equipments Used / 环境与健康杂志

ABSTRACT

Objective To understand the pollution of particulate matters and the distribution of heavy metals in particulate matters. Methods Samples were collected with auto-sampling instrument for 32 consecutive days in heating period of Dec. 2003-Jan,2004, in a central area of Tianjin. The heavy metals were detected with atomic absorption spectrum, atomic fluorescence spectrum and plasma emission spectrum, 9 heavy metals were measured quantitatively. Results The rates of over standards for daily mean of TSP, IP, PM2.5 in heating period were 54.55%, 57.58%, 84.85% respectively. Content of some heavy metals such as Cd, Pb, Ni in the particulate matters were higher. Conclusion Air pollution with particulates in heating period is serious. PM2.5 carries more heavy metals than TSP and IP, so it is much more harmful to human health.