Marsh test

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Science and technology

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What Wikipedia says

The Marsh test is a highly sensitive method in the detection of arsenic, especially useful in the field of forensic toxicology when arsenic was used as a poison. It was developed by the chemist James Marsh and first published in 1836.

Excerpt from the Wikipedia article “Marsh test”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Hugh McMuigan, Public domain, via Wikimedia Commons.