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选取 5 0 %乙醇为提取剂、异丙醇∶氨水∶水 (60∶1 0∶1 0 )和乙酸乙酯∶异丙醇∶水 (60∶40∶3 0 )为展开剂 ,对 1 9种喷墨打印墨水样品和 8种喷墨打印文件字迹色痕进行了薄层色谱实验 ,并根据展开结果将上述样品分为三大类。该方法用样量小、结果准确、重现性好。
A mixture of isopropanol: ammonia water (60: 1 0: 1 0) and ethyl acetate: isopropanol: water (60:40:30) Thin-layer chromatography experiments were carried out on the ink-jet printing ink samples and on the 8 ink-jet printing script. According to the results, the above samples were divided into three categories. The method of small sample size, accurate, reproducible.