Hydrogen Sulfide Copper Prototyping Kit
This method, based on one developed by Lionel Milberger, is an experimental low-cost, accessible way to attempt to detect if hydrogen sulfide is present in the air.
In theory, the copper should react with hydrogen sulfide to produce a purple-black-ish copper sulfide product, visible on the surface of the copper rod. This method has not been quantified or validated yet. Consider collaborating on this project to help assess it!
Please be careful - hydrogen sulfide (H2S) is a dangerous gas, and can be a respiratory irritant and a neurotoxin. Our goal is to help people detect it but use proper safety precautions when near potential sources of H2S. Read more here.
More about this prototype method can be found here: https://publiclab.org/hydrogen-sulfide-copper-pipe
As Lionel Milberger has written in an article in TEST Magazine, the goals of this method are to:
Be able to detect copper at health-relevant, non-fatal concentrations, from several parts per billion (ppb) up to 100 parts per million (ppm).
Be able to discern between copper oxides and copper sulfides forming on the surface of the copper rod.
Be able to measure hydrogen sulfide even under rainy or humid conditions where a significant fraction of hydrogen sulfide will dissolve in the water.
Be deployable, such that it does not require a person to be present for the duration of the test (like would be necessary with a hand-held probe).
Be low-cost and accessible to anyone.
Included in this kit:
- 10 copper tabs
- 10 sandpaper spheres
- organic cotton pads
- 10 pairs of latex free gloves
- acetone or alcohol in mini-nalgene bottle
- double sided tape