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Lead pigment in turmeric is the culprit in a global poisoning mystery (2024)

(www.npr.org)
351 points perihelions | 1 comments | 11 Jul 25 15:33 UTC | HN request time: 0.208s | source
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loopdoend ◴[11 Jul 25 16:37 UTC] No.44534215[source]▶
Wish there were some way to detect impurities like this at home.
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whiw ◴[11 Jul 25 17:15 UTC] No.44534711[source]▶
I am not a chemist, so take this with a pinch of salt: wouldn't lead chromate + sodium bicarbonate make lead carbonate, a white precipitate? Sodium bicarbonate is likely in your kitchen cupboard already.
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1. BenjiWiebe ◴[11 Jul 25 17:24 UTC] No.44534819[source]▶
Not a chemist either but lead oxide is actually more soluble in water than lead chromate, so a double replacement reaction won't favor lead chromate -> lead oxide.