本文介绍了四川维尼纶厂中心化验室用冰盐水浴(-10℃)浓缩样品,测定空气中痕量丁二烯等有关杂质的分析方法的条件、实验和结果。在含量为0~0．2vpm范围内该法能够定量吸附丁二烯等有关杂质,对丁二烯的最低检测浓度可达0．005vpm。分析结果良好。图2,表6,参考文献2。 This article describes the conditions, experiments and results of the analytical method for the determination of trace amounts of butadiene and other impurities in the air by concentrating the sample in an ice salt water bath (-10 ℃) in the laboratory of Sichuan Vinylon Factory Center. In the range of 0 ~ 0.2vpm, the method can quantitatively adsorb butadiene and other related impurities, the lowest detection concentration of butadiene up to 0.005vpm. The result is good. Figure 2, Table 6, Reference 2.