以靛蓝-F为组合探针,建立了非质子有机溶剂(DMSO、THF、DMF、二恶烷、乙腈)中微量水的比色检测新方法.结果表明,F加入靛蓝溶液后体系的颜色由蓝色变为黄绿色,进一步加入微量水之后,体系从黄绿色又变回蓝色,因而可作为一种变色探针实现对有机溶剂中微量水的裸眼识别检测.体系具有较高灵敏度,对DMSO、THF、DMF、二恶烷及乙腈中微量水的检测限分别为0.022％、0.043％、0.016％、0.34％和0.015％.该方法实验操作简便、快速、灵敏、安全.实验结果表明,靛蓝与F-的结合比为1∶2.利用核磁滴定方法对机理进行了探讨.
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