Wildland fire activity and associated emission of particulate matter air pollution is increasing in the United States over the last two decades due primarily to a combination of increased temperature, drought, and historically high forest fuel loading. The regulatory monitoring networks in the Unites States are mostly concentrated in larger population centers where anthropogenic air pollution sources are concentrated. Smaller population centers in areas more likely to be impacted by wildland fire smoke in many instances lack adequate observational air quality data. Several commercially available small form factor filter-based PM_2.5 samplers (SFFFS) were evaluated under typical ambient and simulated near-to mid-field wildland fire smoke conditions to evaluate their accuracy for use in temporary deployments during prescribed and wildfire events. The performance of all the SFFFS tested versus the designated federal reference methods (FRM) was acceptable in determining PM_2.5 concentration in both ambient (2.7–14.0 μg m⁻³) and chamber smoke environments (24.6–3044.6 μg m⁻³) with accuracies ranging from ∼92 to 98%. However, only the ARA Instruments model N-FRM Sampler was found to provide PM_2.5 mass measurement accuracies that meet FRM guideline performance specifications under both typical ambient (97.3 ± 1.9%) and simulated wildland fire conditions (98.2 ± 1.4%).

在过去的二十年里，美国的荒地火灾活动和相关的颗粒物空气污染排放正在增加，这主要是由于气温升高、干旱和历史上高森林燃料负荷的结合。美国的监管监测网络大多集中在人为空气污染源集中的较大人口中心。在许多情况下，更容易受到野火烟雾影响的地区较小的人口中心缺乏足够的空气质量观测数据。几种市售的基于小型过滤器的 PM _2.5采样器 (SFFFS) 在典型的环境和模拟的近中场野火烟雾条件下进行了评估，以评估它们在规定和野火事件期间用于临时部署的准确性。^{在确定环境 (2.7–14.0 μg m -3} ) 和室内烟雾环境 (24.6–3044.6 μg m ^-3 )中的 PM _2.5浓度时，所有测试的 SFFFS 与指定的联邦参考方法 (FRM) 的性能均可接受范围从 92% 到 98%。但是，发现只有 ARA Instruments 型号 N-FRM 采样器在典型环境 (97.3 ± 1.9%) 和模拟野火条件 (98.2 ± 1.4%) 下提供符合 FRM 指导性能规范的PM _{2.5质量测量精度。}