关键词: 鲁米诺发光, 双喷泉实验, 氨气, 多色荧光

Abstract:

Upon dissolution of ammonia in water, an instant imbalance of atmospheric pressure inside and outside the bottle is produced. This imbalance allows the fountain experiment to be carried out based on the preparation, collection of ammonia gas, and the tail gas treatment device. Through a simple experiment, a double-fluorescent fountain can be formed based on the Luminol reaction and the indicator phenolphthalein. The purpose of this experiment is to demonstrate the properties of ammonia and show Luminol's bright blue light reaction when it encounters blood. This reaction is mainly used in the detection of blood in modern criminal investigations which can often be seen in detective mystery films, further increasing interest in chemistry.

Key words: Luminol luminescence, Double fountain experiment, Ammonia, Multicolor fluorescence