涤纶纤维上分散染料的液-质分析

目的建立液-质联用技术对涤纶纤维上分散染料进行分析的方法。方法以N，N-二甲基甲酰胺为提取剂，在负离子模式下对12个黄色涤纶纤维上分散染料进行分析。结果12种分散染料在负离子模式质谱检测条件下均得到了有效的分析。根据一级负离子模式下总离子流图中准分子离子峰质荷比的不同，可将其中8种样品一一鉴别开。在此基础上，从染料离子化产物中选取响应信号较强的准分子离子为母离子，再对母离子进行二级质谱全扫描，依据二级质谱图中特征碎片峰的数目、质荷比的异同可对纤维上染料进一步进行鉴别。结论液-质联用法是检验有色纤维上染料的一种科学、有效的方法。

The analysis of disperse dyes on polyester fiber by LC-MS

Objective To investigate the analysis method of disperses dyes on polyester fibers by high performance liquid chromatography-mass spectrometry.Methods With DMF as the extraction agent,disperse dyes on 12 kinds fiber samples were analyzed in the negative ion mode MS.Results According to the first order mass spectrum,eight kinds of samples can be discriminated.A quasi-molecular ion with strong response signal was selected as parent ion from the ionized products of dyes,after two mass spectrometry full-scans,the rest samples were identified by the number of characteristic fragment peaks and mass-to-charge ratio in LSIMS.Conclusion The high performance liquid chromatography-mass spectrometry is an effective method for the analysis of dyes on the fiber.