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  2. Toxic heavy metal - Wikipedia

    en.wikipedia.org/wiki/Toxic_heavy_metal

    The toxic effects of arsenic, mercury and lead were known to the ancients but methodical studies of the overall toxicity of heavy metals appear to date from only 1868. In that year, Wanklyn and Chapman speculated on the adverse effects of the heavy metals "arsenic, lead, copper, zinc, iron and manganese " in drinking water .

  3. Arsenic poisoning - Wikipedia

    en.wikipedia.org/wiki/Arsenic_poisoning

    Arsenic poisoning (or arsenicosis) is a medical condition that occurs due to elevated levels of arsenic in the body. [4] If arsenic poisoning occurs over a brief period of time, symptoms may include vomiting , abdominal pain , encephalopathy , and watery diarrhea that contains blood . [ 1 ]

  4. Metal toxicity - Wikipedia

    en.wikipedia.org/wiki/Metal_toxicity

    Many metals, particularly heavy metals are toxic, but some are essential, and some, such as bismuth, have a low toxicity. Metals in an oxidation state abnormal to the body may also become toxic: chromium(III) is an essential trace element, but chromium(VI) is a carcinogen. Only soluble metal-containing compounds are toxic.

  5. Arsenic, other toxic metals found in local honey, study finds

    www.aol.com/news/arsenic-other-toxic-metals...

    More than 260 samples were taken between 2020 and 2024 across 48 states to look for six toxic metals: arsenic, lead, cadmium, nickel, chromium and cobalt. ... These heavy metals were found around ...

  6. Lead, arsenic and other heavy metals in tampons prompt FDA ...

    www.aol.com/news/metals-lead-arsenic-tampons-fda...

    Researchers ran tests for 16 heavy metals: arsenic, barium, calcium, cadmium, cobalt, chromium, copper, iron, manganese, mercury, nickel, lead, selenium, strontium, vanadium and zinc, according to ...

  7. Arsenic - Wikipedia

    en.wikipedia.org/wiki/Arsenic

    Arsenic is a chemical element with the symbol As and the atomic number 33. It is a metalloid and one of the pnictogens, and therefore shares many properties with its group 15 neighbors phosphorus and antimony. Arsenic is a notoriously toxic heavy metal.

  8. Excessive heavy metals found in many dark chocolate bars ...

    www.aol.com/news/heavy-metals-including-lead...

    The products were tested to see whether the heavy metals lead, cadmium or arsenic were in them. ... called the hazard quotient, to determine a substance’s toxicity. Still, he recommended ...

  9. Marsh test - Wikipedia

    en.wikipedia.org/wiki/Marsh_test

    The Marsh test treats the sample with sulfuric acid and arsenic-free zinc. Even if there are minute amounts of arsenic present, the zinc reduces the trivalent arsenic (As 3+). Here are the two half-reactions: Oxidation: Zn → Zn 2+ + 2 e − Reduction: As 2 O 3 + 12 e − + 6 H + → 2 As 3− + 3 H 2 O. Overall, we have this reaction:

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