Continuous Hazardous Emissions Monitoring by Resonance Ionization

摘要CTS-9616763研究了共振增强多光子电离光谱与飞行时间质谱仪(REMPI/TOFMS)相结合对焚烧炉烟囱气体排放进行连续监测的方法。在早期的研究中已经确定了焚烧炉烟道气中发现的28种化合物的检测限值；在这项研究中，多氯联苯和氯化多环芳烃被添加到这一清单中。这项研究还致力于建立可靠的直接采样半挥发性多环芳烃(PAHs)和其他燃烧产物的方法，并开发用于烟道气成分绝对浓度测量的校准方法。最后，对该方法在模拟焚烧炉翻转条件下运行的可靠性进行了评估。这项工作的目标是采用一种用于燃烧研究的化学分析技术，用于监测焚烧炉的烟囱气体排放，以达到焚烧炉控制和环境合规性的目的。需要对烟囱排放中的化学物质进行简单、实时的测量，以使垃圾焚烧炉在环境和政治上都能被接受。***

ABSTRACT CTS-9616763 This is an examination of the use of resonance-enhanced multiphoton ionization spectroscopy in conjunction with time-of-flight mass spectrometry (REMPI/TOFMS) for continuous monitoring of incinerator stack gas emissions. Detection limits for 28 compounds found in incinerator stack gases have been determined in earlier studies; in this study polychlorinated biphenyls (PCBs) and chlorinated polycyclic aromatics are added to this list. Also pursued in this study are the establishment of reliable methods for direct sampling of semivolatile polycyclic aromatic hydrocarbon (PAHs) and other combustion products and the development of calibration methods for absolute concentration measurements of stack-gas components. Finally, the reliability of the method to function under simulated incinerator-upset conditions is evaluated. The goal of this effort is to adapt a technique for chemical analysis that has been used in research studies of combustion for monitoring of stack gas emission from incinerators for purposes of incinerator control and environmental compliance. A simple, real-time measurement of chemical species in stack emissions is needed to make waste incinerators acceptable environmentally and politically. ***