Lyman G W, Johnson R N, Kho B T
J Assoc Off Anal Chem. 1981 Jan;64(1):177-80.
A method is described for the gas chromatographic determination of oxygen at the low part per million level in both aqueous systems and nonaqueous systems such as creams, oils, and waxes. This method offers advantages over other popular assay procedures such as the Winkler and polarographic methods. The purging technique developed can be applied to any liquid or solid with a melting point of 75 degrees C or less. Oxygen purged from the sample is passed through a molecular sieve 5A column where it is separated from nitrogen. Peaks obtained are compared to similarly prepared oxygen standards. The method is simple enough to be used routinely and up to 15 samples can be analyzed per day.
本文描述了一种气相色谱法，用于测定水体系以及非水体系（如乳膏、油类和蜡类）中百万分率水平较低的氧含量。该方法相较于其他常用的分析方法（如温克勒法和极谱法）具有优势。所开发的吹扫技术可应用于熔点为75摄氏度或更低的任何液体或固体。从样品中吹扫出的氧通过5A分子筛柱，在该柱中氧与氮分离。所得峰与同样制备的氧标准品进行比较。该方法足够简单，可常规使用，每天最多可分析15个样品。
