Luminol: A Glow-in-the-Dark Reaction.
Luminol is an organic compound which, when oxidized, emits light — a phenomenon known as chemiluminescence.
This is similar to the reactions that fireflies uses to emit light, and to those used in “glow-sticks” and some roadside emergency lights.
What causes luminol to glow?
Luminol chemiluminescence can also be triggered by a number of substances such as copper or copper-containing chemical compounds, and certain bleaches. Luminol reacts with faecal matter, causing the same glow as if it were blood.
Why is the iron necessary to make the luminol solution glow?
This isn’t all that’s required, however. The reaction also needs a catalyst in order for it to proceed, and this is where blood comes in. Blood contains haemoglobin, which contains iron atoms. These iron atoms can act as a catalyst for the reaction between luminol and hydrogen peroxide, allowing it to proceed.
How can I make my blood glow?
Improving circulation naturally
- Exercise. This is among the top methods for getting your blood flowing.
- Stress management. When a patient has poor circulation, doctors often ask them about their stress levels.
- Fluid intake.
- Stopping smoking.
What happens when luminol interacts with blood?
This is because luminol is able to react with the iron in haemoglobin – an oxygen-carrying and iron-containing protein in red blood cells. Luminol is so sensitive that it can detect blood at 1 part per million. The glow that results is due to a natural property of luminol called chemiluminescence.
Photo in the article by “Flickr”