摘要
为了研究提高非常规污染物测量精度的方法,选取合适车辆进行试验,取测试系统中CVS稀释通道采样点、收集气袋采样点和气泵出口采样点三个位置进行数据采集,使用固相萃取-高效液相色谱仪对醛酮化合物进行分析。实验结果表明:相比稀释通道采样点和气泵出口采样点,排气分析仪气袋采样点处气体浓度均匀稳定,适合浓度较低的非常规污染物采集,在此处采集能够降低实验误差,提高测量精度。
To study the unregulated pollutants more accurately,several appropriate vehicles were tested. Three positions were selected for data collection,such as the CVS dilution tunnel sampling point,air bag sampling point and the air pump outlet sampling point of the pump outlet. The aldehydes and ketones were analyzed by solid phase extraction-high performance liquid chromatography（ HPLC）. Experiments show that compared with the sampling point of the dilution tunnel and the air pump outlet sampling points,the gas concentration at the sampling point of the exhaust gas analyzer is uniform and stable,and it is suitable for the collection of unconventional pollutants with low concentration. Collecting here can reduce the experimental error and improve the measurement accuracy.
出处
《实验科学与技术》
2017年第5期38-41,共4页
Experiment Science and Technology
基金
清华大学大气环境国家重点实验室开放基金(SCAPC201403)
关键词
非常规污染物
测量精度
方法策略
排放
unregulated pollutants
measurement accuracy
methods and strategies
emission
