通用的过滤式自救器只能将有毒的一氧化碳转化成二氧化碳,并不供氧,佩戴者必须依赖矿井大气中的氧。虽然如此,多年来曾用这种自救器救过很多人,然而,亦有一些人丧失了生命,这是由于这种自救器的防护能力有一定的局限性造成的。美国矿业局匹兹堡采矿与安全研究中心,在近期提出的1950～1969年事故统计中,死亡总数为566人,其中有118人由于一氧化碳中毒致死,有 The universal filtered self-rescuer converts only toxic carbon monoxide to carbon dioxide and does not supply oxygen. The wearer must rely on the oxygen in the mine atmosphere. Nevertheless, many people have been saved by such self-rescuer over the years. However, some people have lost their lives because of the limitations of the self-rescuer’s protective ability. Pittsburgh Mining and Safety Research Center of the United States Bureau of Mines, in the recent statistics from 1950 to 1969, the total number of deaths was 566, of which 118 died of carbon monoxide poisoning, there are