柴油机多环芳香烃类污染物的测量方法  

Measurement method of polycyclic aromatic hydrocarbon emission of diesel engine

作　　者：王忠[1] 安玉光[1] 许广举[1] 王宇成[1] 王小哲[1] 

机构地区：[1]江苏大学汽车与交通工程学院,镇江212013

出　　处：《农业工程学报》2011年第4期174-178,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金项目(50776042);江苏省高校自然科学重大基础研究项目(10KJA470009);江苏省博士创新基金(CX10B_261Z);江苏江苏高校优势学科建设工程资助项目

摘　　要：采用聚四氟乙烯滤膜及XAD-2吸附管采集、超声和索氏提取、气-质联用(GC/MS)分析等方法对柴油机排气中多环芳香烃类污染物进行了定性、定量分析。结果表明,在试验浓度范围内,多环芳香烃(PAHs)各组分的浓度与峰面积的线性关系良好,线性相关系数在0.99以上。线性范围较宽,为0.0125～80μg/mL。该方法样品采集效率较高,样品提取效率均在95%以上。方法重复性较好,相对标准偏差低于15%,滤膜样品的回收率为70.1%～95.9%,吸附剂样品的回收率为77.0%～102.6%。灵敏度高,检出限在0.04μg/m3以下。该方法适用于柴油机排气中PAHs含量的快速分析。The polycyclic aromatic hydrocarbons （PAHs） of diesel engine exhaust were measured by a method of using Teflon filter and XAD-2 collection, as well as ultrasonic extraction, Soxhlet extraction and GC-MS analysis. The results showed that concentration of different component in PAHs and the peak area had a good linear relationship in the experimental concentration range, and the linear correlation coefficient was above 0.99. Linear range was wider with 0.0125-80 μg/mL. The method was more efficient for samples collection, and extraction efficiency was above 95%. The method had more repeatability, and relative standard deviation was less than 15%. Recoveries of filter samples were 70.1%-95.9%, the recoveries of adsorbent samples were 77.0%-102.6%. The method had higher sensitivity with minimum detection limit of 0.04 μg/m3, so it can be used for rapid analysis of PAHs content on diesel engine.

关 键 词：多环芳香烃 柴油机 排放 气质联用分析 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]