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笔者在贵刊’97第5期上看到“蓝色会褪去吗”一文．本人认为文章得出蓝色不会褪去的结论，是因碘溶液是碘一碘化钾的混合液所致，为了验证这一问题，本人做了如下两个定性实验：实验一．向试管中加入很小一片碘晶体，然后加入2毫升四氯化碳，并振荡至碘晶体全部溶解，溶液为紫红色
The author saw “Blue will fade away” article in your issue of ’97 Issue 5. I think that the conclusion that the blue color will not fade is due to the fact that the iodine solution is a mixture of iodine-potassium iodide. In order to verify this problem, I have done the following two qualitative experiments: Experiment I. Add a small piece of iodine crystals to the test tube, then add 2 ml of carbon tetrachloride and shake until the iodine crystals are completely dissolved. The solution is mauve.