β-环糊精对燃煤焦油和烟气中多环芳烃的清除作用  

Scavenging Effect of β-Cyclodextrin on Polynuclear Aromatic Hydrocarbons of Coal Tar and Smog

作　　者：张海容[1] 郎建平[1] 陈金娥[1] 

机构地区：[1]忻州师范学院生化分析技术研究所,忻州034000

出　　处：《应用化学》2011年第3期364-366,共3页Chinese Journal of Applied Chemistry

基　　金：山西省自然科学基金(20051028)资助项目

摘　　要：采用三维荧光法测定了7处产地煤样燃烧的焦油和烟气中多环芳烃(PAHs)的含量,焦油中PAHs含量为0.201～0.419 mg/g,烟气中PAHs含量为1.1～3.2μg/g;测试了β-环糊精(β-CD)溶液对煤烟气中多环芳烃的清除作用,最高去除率可达65.6%。结果表明:不同产地煤的烟气中PAHs含量不同,煤焦油中PAHs浓度(mol/L)在10-5数量级,远高于烟气中的浓度(mol/L,10-7数量级)。用β-CD去除不同产地煤燃烧烟气中多环芳烃的去除率不同。所选7种煤平均清除率为38.4%。β-CD溶液有希望成为煤烟气中多环芳烃的清除剂。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 fl-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.

关 键 词：三维荧光光谱法 煤提取物 多环芳烃 菲 清除率 

分 类 号：O657.3[理学—分析化学]