Method for visually detecting and quantitatively detecting mercury ions in aqueous solution by using water-soluble bromine-iodine-cesium-lead perovskite

The invention provides a method for visually detecting and quantitatively detecting mercury ions in an aqueous solution by using water-soluble bromine-iodine-cesium-lead perovskite, and relates to the technical field of analysis and detection. According to the invention, the water-soluble bromine-iodine-cesium-lead perovskite is adopted to realize the visual detection of the mercury ions in the aqueous solution, instantly distinguish whether the mercury ions exist in the aqueous solution or not and roughly judge the concentration of the mercury ions; meanwhile, quantitative detection with relatively high accuracy can also be carried out. 本发明提供了一种使用水溶性溴碘铯铅钙钛矿可视化检测以及定量检测水溶液中汞离子的方法，涉及分析检测技术领域。本发明采用水溶性溴碘铯铅钙钛矿能够实现对水溶液汞离子的可视化检测，瞬间辨别水溶液中是否存在汞离子且可以大致判断汞离子的浓度；同时也可以进行准确度较高的定量检测。