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Determination of Three Kinds of Volatile Residue of Ozone-Depleting Substances in Polyurethane Foam by Gas Chromatography

机译：气相色谱法测定聚氨酯泡沫中三种消耗臭氧的挥发性物质

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This paper developed a gas chromatography for the determination of volatile residue of ozone-depleting substances (OSD) in polyurethane foam. The sample was detected by gas chromatography - electron capture detector (GC-ECD) under the condition of 120 ℃, 5 ℃ of condensing reflux temperature, 30 min of extraction time and external standard method for quantification. The experimental results of spike recovery showed that: the average recovery of residue of Trichloromonofluoromethane, difluoromonochloroethane and 1, 1,2- trifluoro -1, 2, 2 -trichloroethane, the three volatile organic solvent, was 72.7% ～ 116.1%, and the relative standard deviations were less than 5%. This method can effectively overcome the matrix interference, and one introduction of samples can separate and detect three kinds of volatile organic compounds in polyurethane, which has the characteristics of wide linear range and short response time and improves the analytical efficiency.
机译：本文开发了一种气相色谱法，用于测定聚氨酯泡沫中消耗臭氧物质（OSD）的挥发性残留物。样品通过气相色谱-电子捕获检测器（GC-ECD）在120℃，冷凝回流温度5℃，萃取时间30分钟和外标方法下进行定量。加标回收率的实验结果表明：三种挥发性有机溶剂三氯一氟甲烷，二氟一氯乙烷和1,1,2-三氟-1、2,2-三氯乙烷的残留平均回收率为72.7％〜116.1％，相对标准偏差小于5％。该方法可有效克服基质干扰，一次进样即可分离和检测聚氨酯中的三种挥发性有机化合物，具有线性范围宽，响应时间短，提高分析效率的特点。

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