纤维上染料的分析一直是法庭科学工作者研究的课题之一，而对于染料简单快速有效的分析方法之一是薄层色谱法（ＴＬＣ）。曾有人采用薄层色谱法分析鉴别涤纶纤维上的分散染料［１］和棉纤维上的还原染料，但用薄层色谱法同时分析鉴别涤棉混纺纤维上的分散染料和还原染料尚未见 Analysis of dyes on fibers has been one of the subjects of forensic scientists’ work, and one of the simple, rapid and effective methods for analyzing dyes is thin-layer chromatography (TLC). Thin-layer chromatography has been used to identify disperse dyes on polyester fibers [1] and vat dyes on cotton fibers, but simultaneous identification of disperse dyes and vat dyes on polyester-cotton blended fibers has not been seen by thin-layer chromatography