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.
出处
《应用化学》
CAS
CSCD
北大核心
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
关键词
三维荧光光谱法
煤提取物
多环芳烃
菲
清除率
fluorescence, coal extracts, polynuclear aromatic hydrocarbons, phenanthrene, scavenging rate