Liu and colleagues published the use of 6-((anthracen-9-yl) methyleneamino)-2H-chromen-2-one for visualization of copper or cadmium ions by fluorescence microscopy and cited this method by our previous paper. The fluorescence dye 6-((anthracen-9-yl) methyleneamino)-2H-chromen-2-one mentioned by the authors is not specific for Cu or Cd ions, we never tested it for this aim and some photos presented by the authors indicate even double method mistake as explained below.

中文翻译：

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6-（（蒽-9-基）亚甲基氨基）-2H-铬-2--2-的检测与使用

Liu和他的同事发表了使用6-（（蒽-9-基）亚甲基氨基）-2H-chromen-2-one通过荧光显微镜观察铜或镉离子的方法，并在我们以前的论文中引用了此方法。作者提到的荧光染料6-（（蒽-9-基）亚甲基氨基）-2H-chromen-2-one并不特异于Cu或Cd离子，我们从未为此目的对其进行过测试，并且作者提供了一些照片指示甚至双重方法错误，如下所述。