タイトル無し

概要

論文の詳細を見る
The performance of a respirator is governed mostly by the leakage through between mask and face. The leakage has been measured for three types of half mask and two types of full-face mask, worn by about forty persons, in order to examine the usefullness in actual application of the test method using NaCl particles. The particles generated with a nebulizer were fed into the hood in which the subject wore his respirator, and the concentration of NaCl in exhaled air was measured by a flame photometer. The measured values were corrected for the deposition of NaCl particles in the respiratory tract.The leakage of full-face masks differed largely with experience of the wearer. However, a few of persons tested could not be adjusted so as to avoid serious leakage.The problems in application of the present method to field test are also discussed.
日本保健物理学会の論文