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简述了棉/涤混纺纤维上染料提取液的 TLC 分析。以 N,N—二甲基甲酰胺为提取剂,提取效果好,对 TLC 分析无干扰。用所建立的 TLC 分析系统,不仅能区别用不同染料染成的相同颜色的棉/涤混纺纤维,而且还能将用不同配比的相同染料染色的棉/涤混纺纤维上的染料鉴别开。该方法操作简便,检材用量少,最小检出量为1cm 长的单根纤维。适合于在公安基层单住的实际办案中应用。
The TLC analysis of the dye extract on cotton / polyester blend fiber is briefly introduced. With N, N-dimethylformamide extractant, the extraction effect is good, no interference on TLC analysis. Using the established TLC analysis system, it is possible to distinguish not only the same color cotton / polyester blend fibers dyed with different dyes but also the dyes on the cotton / polyester blend fibers dyed with the same dye in different proportions. The method is simple, less amount of samples, the minimum detection of 1cm long single fiber. Suitable for public security grass-roots single-place application in the actual handling.