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铅化合物作为油漆成分,塑料填充剂,汽油镇震剂等,广泛应用于国民经济中,其中相当数量通过多种途径最后进入到空气中,而汽车的排放又是大气中铅增加的主要原因,在汽车密度高的城市和主要交通干道,铅污势必更为严重。道路扬起的尘埃微粒有吸附作用,它一定程度上限制了铅的自由扩散,从而在局部范围内富集起来,因此,测定总铅量对研究环境状况是有意义的。
Lead compounds are widely used in the national economy as paint components, plastic fillers, gasoline shock absorbers, etc. A considerable amount of lead compounds finally enter the air through a variety of ways, and the emission of automobiles is the main reason for the increase of lead in the atmosphere. In cities with high vehicle densities and major traffic routes, lead pollution is bound to worsen. Road dust from the dust particles have adsorption, which to some extent limits the free diffusion of lead in order to enrich the local scope, therefore, the determination of the total amount of lead to study the state of the environment is of significance.