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Prussian Blue Detection

The detection of Prussian blue as an indicator of cyanide exposure in gas chambers.

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Jan 13, 2026
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What forensic methods were used in 1945–1946 to detect cyanide residues in former gas chambers and how reliable are those results?

The immediate post‑war forensic work (1945–46) that sought chemical traces of hydrogen cyanide (Zyklon B) used at Auschwitz and other camps combined visual observation of Prussian blue staining, chemi...

Jan 31, 2026

How does cyanide poisoning from inhalation compare clinically and forensically to other chemical asphyxiants like carbon monoxide?

(CO) inhalation both produce chemical asphyxia but through distinct molecular targets: CO binds hemoglobin, impairing oxygen delivery, while cyanide disables cellular respiration by inhibiting cytochr...