标准摘要
[中文适用范围]： 本文件给出： ——地球大气成分的描述； ——人类呼吸生理学的描述； ——对当前关于二氧化碳和氧气对人体生理学影响的生物医学文献的调查； ——氧气或二氧化碳的分压可能与海平面的分压不同的环境情况示例。 该文件确定了氧气和二氧化碳浓度极限值以及预计它们不会造成生理困扰的时间长度。 为了充分说明对人体生理学的影响，本文件讨论了遇到低分压的高海拔暴露和涉及高分压条件的水下潜水。 还包括呼吸器的使用以及可以佩戴 RPD 的各种工作频率。 [外文原描述]： This document gives: a description of the composition of the Earth's atmosphere; a description of the physiology of human respiration; a survey of the current biomedical literature on the effects of carbon dioxide and oxygen on human physiology; examples of environmental circumstances where the partial pressure of oxygen or carbon dioxide can vary from that found at sea level. This document identifies oxygen and carbon dioxide concentration limit values and the length of time within which they would not be expected to impose physiological distress. To adequately illustrate the effects on human physiology, this document addresses both high altitude exposures where low partial pressures are encountered and underwater diving, which involves conditions with high partial pressures. The use of respirators and various work rates during which RPD can be worn are also included.
英文名称Respiratory protective devices — Human factors — Part 3: Physiological responses and limitations of oxygen and limitations of carbon dioxide in the breathing environment