用干法测定合成橡胶中的残留溶剂,通常需先将溶剂与胶样分离,然后再用色谱法检测。该法手续烦琐,准确度较差。本工作在文献[2]的基础上,用气相色谱顶空法测定异戊胶中的残留溶剂,操作简便,灵敏度高,尤其适于胶中低含量溶剂的测定。 The dry method for the determination of residual solvents in synthetic rubbers is usually preceded by separation of the solvent from the gum sample and then by chromatography. The procedure is cumbersome, less accurate. This work is based on the literature [2], using GC headspace method to determine the residual solvent of isoprene, which is simple and easy to operate with high sensitivity. It is especially suitable for the determination of low content of solvent in the gel.