ＨＣＦＣ－１４１ｂ是氟利昂类物质的主要替代物之一．用微量引入氧气的方法，大幅度提高了电子捕获检测（ＥＣＤ）的响应值，从而使常规的ＧＣ－ＥＣＤ方法能有效测量该物质．数据显示，当载气中φ（Ｏ２）＝１．０％时，这种灵敏度增强效应最佳，是无氧情况下的５０倍；并对有关机理进行了讨论 HCFC-141b is one of the major alternatives to freons. The introduction of oxygen in trace amounts dramatically improves the response of electron capture detection (ECD), allowing conventional GC-ECD methods to measure this material effectively. The data show that this sensitivity enhancement effect is optimal at φ (O2) = 1.0% in carrier gas, which is 50 times more than in the case of anaerobic conditions; and the mechanism is discussed