Abstract
The contents of polynuclear aromatic hydrocarbons(PAHs) in tar and smog of burned coal produced in 7 different areas have been measured using three-dimensional fluorescent method.The range of PAHs in coal tar is from 0.201~0.419 mg/g and in coal smog is from 1.1~3.2 μg/g.Scavenging capacity for PAHs in coal smog by β-CD solution was determined to be 65.6%.The results showed that:PAHs contents of coal smog is different as the origin of coal varies.The PAHs content in coal tar is in the order of 10-5 mol/L,and more than that in the order of(10-7 mol/L) in coal smog.As the producing area varies,the scavenging rates of PAHs in coal smog by β-CD solution is also different,the average scavenging rate of 7 kinds of selected coals was 38.4%.Hence,it is hopeful that the β-CD solution can be used as an effective removal agent for PAHs in coal smog.
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