Crutchfield C D, Murphy R W, Van Ert M D
School of Health Related Professions, University of Arizona, Tucson 85719.
Am Ind Hyg Assoc J. 1993 Jan;54(1):10-4. doi: 10.1080/15298669391354243.
A quantitative respirator fit test system based on controlled negative pressure was evaluated by comparison testing with a computerized aerosol fit test system. Experiments ranged from multiple sequential tests of a single subject wearing a respirator equipped with a series of fixed leaks to sequential fit tests of 125 U.S. Air Force personnel using both systems. Throughout each test phase, measured negative pressure fit factors were consistently more conservative and less variable than aerosol fit factors. Comparison of subject and fixed leak fit factors indicated significant loss of aerosol during subject fit tests. Negative pressure system results did not show any effect from subject-related losses.
通过与计算机化气溶胶适合性测试系统进行对比测试，对一种基于受控负压的定量呼吸器适合性测试系统进行了评估。实验范围从对佩戴装有一系列固定泄漏装置的呼吸器的单个受试者进行多次连续测试，到使用这两种系统对125名美国空军人员进行连续适合性测试。在每个测试阶段，测量得到的负压适合性因子始终比气溶胶适合性因子更保守且变化更小。受试者与固定泄漏适合性因子的比较表明，在受试者适合性测试期间气溶胶有显著损失。负压系统的结果未显示出与受试者相关损失的任何影响。
