6 ms·

Wouldn’t lead contamination cause the turmeric to sink?

• SideburnsOfDoom 3y ago
  Lead Chromate, not Lead. But apparently it's also not very soluble in water, so the question about sinking stands. Possibly, a chemical powder is much finer than a ground-up plant matter, and takes longer to settle. https://en.wikipedia.org/wiki/Lead(II)_chromate#Safety_hazards https://en.wikipedia.org/wiki/Lead(II)_chromate#Safety_hazar...
  • literalAardvark 3y ago
    I've actually had a successful test with the water method. The lead coloring shows immediately and remains dissolved or in suspension or whatever for days, possibly forever. Turmeric doesn't usually color water at all.
    • Tozen 3y ago
      There are youtube videos showing how to do the turmeric test with water. Definitely, everyone that uses it, should know this. https://www.youtube.com/watch?v=tXWPf0HQd5U https://www.youtube.com/watch?v=tXWPf0HQd5U (Testing Turmeric Powder adulteration with Artificial Color)
      • colordrops 3y ago
        I just tried this test with some turmeric powder I had at home and it failed according to what is shown in the video. I happened to have a lead testing kit, and it doesn't have lead though. The powder does have some ginger and other herbs in it, so apparently harmless adulterants other than lead can cause it to fail this visual test.
        • Eisenstein 3y ago
          Have you checked that test with known lead chromate to rule out test error?
          • colordrops 3y ago
            Good idea...