Zinc Cadmium facts
While investigating facts about Zinc Cadmium Sulfide and Zinc Cadmium Sulphide, I found out little known, but curios details like:
A typical one ton sample of zinc led to the production of only 6.5 pounds of cadmium.
how to remove cadmium from zinc sulphate solution?
In 1817, Friedrich Stromeyer discovered cadmium after isolating it from zinc carbonate.
What is zinc cadmium sulfide?
In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across answering what is the difference between cadmium and zinc plating. Here are 16 of the best facts about Zinc Cadmium Sulfide Injection and Zinc Cadmium Spray Paint I managed to collect.
what has a higher mass cadmium or zinc?
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Of all the transition metals, it has the lowest melting point after cadmium and mercury.
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In the mid-50's "a densely populated slum district," in St. Louis was, unknowingly, chosen as a biological weapons test site, which purposely spewed hundreds of lbs of zinc cadmium sulfide, that may have contained radiation, into the the city because it bore some resemblance to Russian cities.
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Since cadmium is most often found as an impurity in zinc that Stromeyer and Hermann studied, the main source of cadmium is the refining of zinc.
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Cadmium is typically produced as a derivative of the processes involved in mining ores of zinc, lead, or copper.
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It has no known part in higher organisms, but some ocean diatoms can rely on cadmium when zinc levels are too low.
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Karl Samuel Leberecht Hermann, also of Germany, discovered cadmium the same year and while studying the same impurity in zinc carbonate.
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He found that an impurity in the zinc carbonate changed color when heated, which ZnCO3 does not do.
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The U.S. Army Chemical Corps dispersed microscopic zinc cadmium sulfide (ZnCdS) particles over much of the United States to determine the dispersion and geographic range of biological or chemical agents.
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During the 1950s and 60s, the U.S. Army dusted American cities with zinc cadmium sulfide. In St. Louis, they used motorized blowers perched atop low-income housing, claiming at the time that the machines were part of a test for smoke screens that could guard against aerial observation by Russia.
Why can cadmium compete with zinc?
You can easily fact check why zinc and cadmium are soft metals by examining the linked well-known sources.
Some tattoo inks can have heavy metals such as mercury, lead, cadmium and zinc.
CBS News: Declassified Documents Reveal Secrete Spraying Programs in Texas and Missouri - Zinc Cadmium Sulfide Spiked with Raido Active Chemicals. - source
