废弃物燃烧产生的可吸入颗粒物中金属元素的排放特性研究

Several wastes including paper scrap, bagasse, wood powder, chaff and refused derived fuel (RDF) were burned. The inhalable particulate matter (PM10) emitted from them was sampled and analyzed. The mass fraction and emission character of metal elements in PM10 were obtained, which were compared with those in relevant raw materials and ashes. The results show that the kinds of metal in PM10 are related to the materials. The mass fraction of metal elements in PM10 from paper scraps is the lowest while that from RDF is the highest. It is also found that the mass fraction of some heavy metals are very high, which are several times of those in soil. The metal distribution in PM10 and ashes is closely correlated to the character of metals. The metal elements are obviously concentrated in PM10.