Johnston A R, Dyrud J F, Shih Y T
Occupational Health and Environmental Safety Division, 3M, St. Paul, MN 55144-1000.
Am Ind Hyg Assoc J. 1989 Sep;50(9):451-4. doi: 10.1080/15298668991374976.
Development of air purifying respirators for protection against ozone has been slowed by concerns about oxidation of charcoal and other available sorbents. The suitability of a charcoal sorbent for low concentrations of ozone was evaluated as a part of the development of a half-mask air purifying respirator designed for welding fumes and ozone. Testing of the respirator confirmed that charcoal can be a suitable sorbent for low levels of ozone. Where the respirator is properly selected, fit tested, and worn, respirator use against welding fumes and ozone at concentrations not exceeding 10 times the permissible exposure limit had been recommended.
由于担心木炭和其他可用吸附剂的氧化，用于防护臭氧的空气净化呼吸器的开发受到了阻碍。作为一种专为焊接烟尘和臭氧设计的半面罩空气净化呼吸器开发的一部分，评估了一种木炭吸附剂对低浓度臭氧的适用性。呼吸器测试证实，木炭可以是低水平臭氧的合适吸附剂。在正确选择、进行适合性测试并佩戴呼吸器的情况下，建议在浓度不超过允许接触限值10倍的情况下使用呼吸器来防护焊接烟尘和臭氧。
