Total Arsenic Is a Poor Proxy: Why Arsenic Speciation Matters — page updateshttps://heavymetalcertified.com/articles/organoarsenical-inertness-assumptionPublished revisions of this Heavy Metal Certified page.Total Arsenic Is a Poor Proxy: Why Arsenic Speciation Mattershttps://heavymetalcertified.com/articles/organoarsenical-inertness-assumptionhttps://heavymetalcertified.com/articles/organoarsenical-inertness-assumption#revision-7a2563757d19b2f7Mon, 21 Sep 2026 04:04:58 GMTOrganic arsenic in seafood was long assumed inert; that is now contested, so total arsenic is a poor risk proxy and standards should target inorganic arsenic.