Einfeld W, Horstman S W
Am Ind Hyg Assoc J. 1979 Jul;40(7):626-32. doi: 10.1080/15298667991430073.
A two stage filter method designed to separate gaseous and particulate fluoride utilizing an alkaline treated filter to trap gaseous fluoride and post sampling heat treatment of the filters to promote desorption of gaseous fluoride from particulate phase was compared to standard impinger methods for the collection of hydrogen fluoride. Results indicate a high degree of comparability between the two methods. Initial studies involving the recovery of HF from dusted filters by heat treatment suggest recovery rates may vary directly with the amount of HF sampled for a given dust load.
一种两阶段过滤方法被设计用于分离气态和颗粒态氟化物，该方法利用经过碱性处理的过滤器捕获气态氟化物，并在采样后对过滤器进行热处理以促进气态氟化物从颗粒相中解吸，将其与收集氟化氢的标准冲击式吸收管方法进行了比较。结果表明这两种方法具有高度可比性。最初涉及通过热处理从沾尘过滤器中回收氟化氢的研究表明，对于给定的粉尘负荷，回收率可能与采样的氟化氢量直接相关。
