The Analysis of Ploycyclic Aromatic Hydrocarbons in Aerosol (PM10, PM2.5) at Ore Dressing Plant

In order to find out the distribution of ploycyclic aromatic hydrocarbons of aerosol (PM₁₀, PM_2.5) and standardize the system of beneficiation reagent and provide basis for monitoring air, five sampling areas were set up from June, 2008 to October, 2008, in the period.The researchers collected samples of PM₁₀, PM_2.5 and pretreated them by the methods such as soxhelt extraction, concentrated by Kuderna-Danish concentrator and blowing high purity nitrogen in sequence. In addition, Gas chromatography and mass spectrometry(GC-MS) is used to ascertain Ploycyclic Aromatic Hydrocarbons of the pretreated samples in this paper. The results show that our analysis establishes some important results as follows: A total of thirty-five PM₁₀ and PM_2.5 samples were detected respectively and 16 kids of typical PAHs can are inspected in every samples, Levels of benzo[a] pyrene are in the range from 1.03 ng/ m³ to 23.35ng/m³ (PM₁₀) and 0.24ng/m³ to 18.75ng/m³ ( PM_2.5) ,with an overall mean of 5.07 (PM₁₀) and 3.91 (PM_2.5). Indicate the serious pollution of ploycyclic aromatic hydrocarbons in the mineral separation plant,be harmful to health of workers and should be attached importance by corrective department.