基于空气质量自动监测站PM10滤纸的新型大气二NFDA1英监测技术研究

通过典型空气质量自动监测站PM10滤纸(结合气固相分配模拟)和传统大流量大气采样仪的比对试验,探讨了基于空气质量自动监测站PM10滤纸的新型大气二英监测技术的可行性。研究表明,基于空气质量自动监测站PM10滤纸的大气固相二英毒性当量浓度和指纹特征与传统大流量大气监测技术的监测结果具有很好的可比性;基于空气质量自动监测站PM10滤纸气固相分配模拟(利用Harner-Bidleman模型)的大气二英毒性当量浓度和指纹特征与传统大流量大气监测技术的监测结果具有很好的可比性。与传统大流量大气监测技术相比,基于空气质量自动监测站PM10滤纸的新型大气二英监测技术可以利用现有的大气自动监测网络和气固相分配模型,具有采样成本低、代表性强和易于普及等优点,适合不同区域尺度大气二英的长期同步监测。

Study on the AQMS-PM10 Filter Paper based Novel Technique for Monitoring of Atmospheric PCDD/Fs

This paper discussed the feasibility of a novel air quality monitoring station AQMS-PM₁₀ filter paper based technique for monitoring of atmospheric polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) through the paired comparison test between PM₁₀ filter paper (combined with modeling of gas/particle partitioning) from a typical AQMS and a conventional high volume air sampler (HVS). The results indicated that: the monitored particle-bound atmospheric concentrations and fingerprints of PCDD/Fs in terms of international toxic equivalents (I-TEQ) from the AQMS-PM₁₀ filter paper based technique were comparable to those from the HVS; the simulated (by utilizing the gas/particle partitioning model of Harner-Bidleman) atmospheric concentrations and fingerprints of PCDD/Fs (in terms of I-TEQ) based on the AQMS-PM₁₀ filter paper were comparable to those from the observations of HVS. In contrast to the HVS, the novel AQMS-PM₁₀ filter paper based technique could utilize the existing automatic air monitoring network and gas/particle partitioning model, and has the advantages of lower cost of sampling, higher representativeness and easier to be popularized, and is thus suitable for long-term simultaneous atmospheric monitoring of PCDD/Fs at different regional scales.