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车间空气中的双乙烯酮采集在硅胶上， 用热解吸经ＳＥ－ ３０ 柱分离， 氢焰离子化检测器气相色谱法测定， 方法的检出限为２×１０－ ３μｇ。标准曲线线性范围２－ ４０ｍ ｇ／ｍ ３，解吸效率９３．５％ ，５００ｍ ｇ 硅胶的穿透容量为０．５８ｍ ｇ。双乙烯酮样品可保存五天。本方法准确度高、精密度好、快速简便。
The diketene in the air of the workshop was collected on silica gel and separated by SE-30 with thermal desorption. The detection limit of the method was 2 × 10-3 μg by gas chromatography with hydrogen flame ionization detector. The calibration curve has a linear range of 2-40 m g / m 3 and a desorption efficiency of 93.5%. The penetration capacity of 500 m g silica gel is 0.58 m g. Diketene samples can be stored for five days. The method of high accuracy, precision, fast and easy.