Ernstberger H G, Gall R B, Turok C W
Technical Services Division, Martin Marietta Energy Systems, Inc., Paducah, KY 42002-1410.
Am Ind Hyg Assoc J. 1988 Dec;49(12):613-9. doi: 10.1080/15298668891380330.
Most methods for testing facial seal leakage on subjects undergoing respirator fit tests involve comparing the generated aerosol particulate concentration inside the subject's respirator to the concentration in a test chamber. These aerosols are produced by fogging substances such as corn oil, dioctyl sebacate, or dioctyl phthalate (DOP) into the test chamber. The health effects of these substances and of their aerosols on respiratory systems are uncertain. The proposed alternate method uses as a test medium ambient particles which exist in most room atmospheres. The proposed method eliminates the need for a test chamber and for an intentionally produced aerosol. The subject is tested for respirator inleakage by comparing the particulate count concentration inside the subject's respirator to that of the room atmosphere outside the respirator. This method is less expensive and simpler to administer than the use of oil or other deliberately produced aerosols because it uses an existing ambient test medium. Statistical analysis of the test data indicates favorable comparison with the conventional chamber-aerosol method.
大多数针对接受呼吸器适合性测试的受试者进行面部密封泄漏测试的方法，都涉及将受试者呼吸器内部产生的气溶胶颗粒浓度与测试舱内的浓度进行比较。这些气溶胶是通过将玉米油、癸二酸二辛酯或邻苯二甲酸二辛酯（DOP）等物质雾化到测试舱中产生的。这些物质及其气溶胶对呼吸系统的健康影响尚不确定。提议的替代方法使用大多数室内环境中存在的环境颗粒作为测试介质。该提议方法无需测试舱和故意产生的气溶胶。通过将受试者呼吸器内部的颗粒计数浓度与呼吸器外部的室内大气浓度进行比较，对受试者进行呼吸器内泄漏测试。这种方法比使用油或其他故意产生的气溶胶更便宜且更易于实施，因为它使用现有的环境测试介质。对测试数据的统计分析表明，与传统的舱室 - 气溶胶方法相比效果良好。
