本文讨论了现有测试方法在测量建筑物中安装的气相空气过滤设备（GPAFE）有效性方面的应用。这项工作基于ASHRAE研究项目791（Liu 1995）的结果。有三种测试方法可用于测量环境和室内空气中气体和蒸汽污染物的低浓度。通过适当的采样程序和数据解释，这些方法可以很容易地用于确定建筑物中安装的GPAFE的有效性。实时仪器提供连续数据，以监控GPAFE的效率和使用寿命。 检测限通常在低ppb范围内。尽管实时仪器非常理想，但作者认为，从建筑物运行和维护的角度来看，它们不是GPAFE测试的成本效益高的现场方法。主动方法是精确的短期方法。主动取样法的典型准确度为±5%-10%。由于主动取样并不便宜，且试验持续时间仅为1至8小时，因此建议在安装后不久使用主动取样来验证GPAFE的初始去除效率。被动空气采样成本最高- 监测GPAFE性能的有效、易于操作的测试方法。它利用扩散在采样器中收集污染物。该过程只需要将被动取样器放置在感兴趣的位置，并留出足够的时间让取样器收集足够数量的污染物进行分析。无需外部设备，如泵、管道、流量计、校准套件或电源。被动采样方法的典型准确度为挥发性有机物±20%-25%，臭氧、二氧化氮、二氧化硫和甲醛±10%-15%。被动取样应作为建筑工程师的常规测试方法，以监测已安装GPAFE的去除效率和使用寿命。 定期进行被动采样并收集影响GPAFE性能的所有相关数据（例如，温度、气流速度和相对湿度）非常重要。通过这种方式，可以分析在不同使用时间段收集的测试数据，以确定何时改变GPAFE，并评估由于污染物负荷和环境条件的变化而导致的GPAFE的不规则行为。单位:SICitation:ASHRAE Transactions，1998年，第104卷，第2部分，多伦多

This paper discusses applications of existing test methods for measuring the effectiveness of installed gas-phase air filtration equipment (GPAFE) in buildings. The work is based on the results of ASHRAE Research Project 791 (Liu 1995).Three types of test methods are available for measuring low-level concentrations of gaseous and vaporous contaminants in ambient and indoor air. With appropriate sampling procedures and data interpretation, these methods can be readily used to determine the effectiveness of installed GPAFE in buildings.Real-time instruments provide continuous data to monitor the efficiency and service life of GPAFE. The detection limits are typically in the low ppb range. Although real-time instruments are extremely desirable, the author does not think they would be cost-effective field methods for GPAFE testing from the standpoints of building operation and maintenance.Active methods are accurate, short-term methods. The typical accuracy of active sampling methods is ±5%-10%. Since active sampling is not inexpensive and test duration is only one to eight hours, they are recommended for validating the initial removal efficiency of GPAFE shortly after installation.Passive air sampling is the most cost-effective, easy-to-operate test method for monitoring GPAFE performance. It uses diffusion to collect contaminants in a sampler. This process requires only the placement of the passive sampler in a location of interest and the allowance of sufficient time for the sampler to collect an adequate amount of contaminants for analysis. No external devices such as pumps, tubing, flowmeters, calibration kits, or power sources are needed. The typical accuracy for passive sampling methods is ±20%-25% for VOCs and ±10%-15% for ozone, nitrogen dioxide, sulfur dioxide, and formaldehyde.Passive sampling should be used as a routine test method for building engineers to monitor the removal efficiency and service life of installed GPAFE. It is important to conduct the passive sampling on a regular basis and to collect all the relevant data (e.g., temperature, airflow rate, and relative humidity) that affect the GPAFE performance. In this manner, the test data collected at different periods of service time can be analyzed to determine when to change GPAFE and to assess the irregular behavior of GPAFE due to changes in pollutant loads and environmental conditions.Units: SI