由于对气相空气过滤设备（GPAFE）的需求和需求不断增加，加上对GPAFE系统的使用寿命和效率缺乏了解，以及缺乏足够的测试方法，ASHRAE发起了一个研究项目:测量气相空气过滤设备污染物去除效率的现场试验方法:第一阶段:文献和现有技术791-RP（Liu，1996）和第二阶段:测量气相空气过滤设备791-RP（1098-TRP）污染物去除效率的现场试验方法。根据文献数据，Liu（1996）进行的第一阶段提供了关于常用GPAFE类型、污染物去除效率的合适测量方法以及现场试验程序草案的信息。第一阶段仅限于文献综述和方法建议，不包括实际的实验室或现场试验，这是第二阶段的基础，其结果在本报告中给出。 第二阶段研究的目标是开发一种现场测试方法，为建筑经理和维护人员提供一种程序，以确定GPFAE过滤器在其建筑中的去除效率和使用寿命，并提供各种建筑类型中GPAFE过滤器的使用寿命和去除效率的数据。现场样本收集，以及在可能的情况下的分析，将由建筑维护人员轻松完成，而不是要求研究和/或调查公司执行。被动采样方法是有针对性的，因为这些方法可以由内部建筑维护人员轻松且廉价地执行。考虑了实时方法，因为这些方法将提供现场采样和分析，但能够满足目标分析物所需检测限的实时方法对于典型设施来说过于昂贵，以至于无法购买和维护（如果有合适的技术）。

Due to the increased demand and need for gas-phase air filtration equipment (GPAFE) in conjunction with the lack of understanding of service life and efficiency of GPAFE systems, and the absence of adequate test methods, ASHRAE initiated a research projectField Test Methods to Measure Contaminant Removal Effectiveness of Gas Phase Air Filtration Equipment: Phase I: Search of Literature and Prior Art 791-RP(Liu, 1996) andPhase II: Field Test Methods to Measure Contaminant Removal Effectiveness of Gas Phase Air Filtration Equipment 791-RP (1098-TRP). Based on literature data, Phase I, conducted by Liu (1996), provided information on the types of GPAFE commonly used, suitable measurement methods for contaminant removal efficiencies, and a draft field test procedure. Phase I was limited to literature review and method recommendations, and did not cover actual laboratory or field-testing, which is the basis of Phase II, the results of which are presented in this report.The objectives of the Phase II research were to develop a field test method that would provide building managers and maintenance staff with a procedure to determine GPFAE filters removal efficiencies and lifetimes in their buildings, and to provide data on the lifetime and removal efficiency of GPAFE filters in a variety of building types. The field sample collection, and whenever possible analysis, was to be performed easily by building maintenance staff rather than requiring performance by research and/or survey firms. Passive sampling methods were targeted since these could be easily and inexpensively performed by the in-house building maintenance staff. Real-time methods were considered since these would provide on-site sampling and analysis, but the real-time methods capable of meeting the required detection limits for the targeted analytes were too expensive for typical facilities to purchase and maintain, if appropriate technology was even available.