大学化学 >> 2022, Vol. 37 >> Issue (5): 2110011.doi: 10.3866/PKU.DXHX202110011

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双色流荧——基于氨气制备的鲁米诺双色荧光喷泉

张光亚, 李杰, 张涵, 李素芝, 陈淑敏()   

  • 收稿日期:2021-10-08 录用日期:2021-11-04 发布日期:2022-03-11
  • 通讯作者: 陈淑敏 E-mail:chensm2014@163.com
  • 作者简介:陈淑敏, Email: chensm2014@163.com

Double-Color Fluorescent Fountain: Luminol Reaction Based on the Preparation of Ammonia Gas

Guangya Zhang, Jie Li, Han Zhang, Suzhi Li, Shumin Chen()   

  • Received:2021-10-08 Accepted:2021-11-04 Published:2022-03-11
  • Contact: Shumin Chen E-mail:chensm2014@163.com

摘要:

基于氨气的制备、收集和尾气处理装置来设计溶液反应,利用氨气易溶于水导致瓶内外大气压瞬间失衡的性质实现喷泉实验。通过简单易行的操作,基于鲁米诺发光反应和无色酚酞溶液遇碱变色反应,成功实现了双色荧光喷泉实验。本实验的目的是普及基础化学中氨气的性质和鲁米诺遇血发出明亮的蓝光的特性,介绍鲁米诺发光的原理,让参观者解开悬疑侦探片中喷洒试剂就可以显示出肉眼不可见血迹的疑惑,切身感受化学之趣。

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

MSC2000: 

  • G64