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采用吸附热解吸 -气相色谱 -质谱法对23种挥发性有机化合物在Chromosorb106、TenaxTA、TenaxTG等3种吸附剂上漏出容量进行了测定。根据实验结果确定了不同的化合物应选择不同的吸附剂及相应的采样体积。结果表明,Chromosorb106可较好地吸附低沸点的挥发性有机化合物,TenaxTA、TenaxTG均可用于沸点较高的挥发性有机化合物吸附,这对测定大气中的有机化合物含量的采样有一定的参考价值。
The leak capacity of 23 volatile organic compounds on three adsorbents, Chromosorb106, TenaxTA and TenaxTG, was determined by adsorptive thermal desorption-gas chromatography-mass spectrometry. According to the experimental results, different compounds should be selected for different adsorbents and the corresponding sampling volume. The results showed that Chromosorb106 could adsorb low boiling point volatile organic compounds. TenaxTA and TenaxTG could be used for the adsorption of volatile organic compounds with higher boiling point, which is of certain reference value for the determination of the content of organic compounds in the atmosphere.