Holness D E, Brock A J
Med Instrum. 1975 Jan-Feb;9(1):23-5.
In vitro information is provided on the gas partial pressure/temperature relationship and on the membrane permeability/temperature relationship, when a special type of Teflon membrane is used with a mass spectrometer. Monitored pressures of oxygen, nitrogen, and carbon dioxide in an equilibrating gas mixture decreased with stepwise decreases in temperature from 37 to 18 degrees C. Permeability of membranes to all gases also decreased with decreasing temperature. Observed partial pressure changes were apparently due to temperature-induced changes in Teflon membrane permeability characteristics.
当使用一种特殊类型的聚四氟乙烯膜与质谱仪配合时，可提供关于气体分压/温度关系以及膜渗透率/温度关系的体外信息。在平衡气体混合物中，氧气、氮气和二氧化碳的监测压力随着温度从37℃逐步降至18℃而降低。膜对所有气体的渗透率也随着温度降低而降低。观察到的分压变化显然是由于聚四氟乙烯膜渗透率特性的温度诱导变化所致。
