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Lead may be found in food when food is grown in soil that is high in lead, airborne lead contaminates the crops, animals eat lead in their diet, or lead enters the food either from what it was stored or cooked in. [287] Ingestion of lead paint and batteries is also a route of exposure for livestock, which can subsequently affect humans. [288]
The galena crystal was used with a sharp wire, known as a "cat's whisker", in contact with it. [28] In modern times, galena is primarily used to extract its constituent minerals. In addition to silver, it is the most important source of lead, for uses such as in lead-acid batteries. [9]
The FDA recommends a maximum of 0.1 parts per million (ppm) of lead in candy, but many imported types exceed this limit. The lead usually comes from things like lead-based ink used on the ...
Pewters containing lead are no longer used in items that will come in contact with the human body (such as cups, plates, or jewelry), due to the toxicity of lead. Modern pewters are available that are completely free of lead, although many pewters containing lead are still being produced for other purposes.
One of the most popular and simple symbols of Christmas decorations has a surprising history. Tinsel was first invented in the 1600s but it wasn't cheap. Back then it was made from strands of ...
Gasoline used to be a common source of lead exposure in the US. Now, millions of people’s mental health may be feeling the impacts. Research shows more than 150 million mental diagnoses may be ...
The metals of antiquity are the seven metals which humans had identified and found use for in prehistoric times in Africa, Europe and throughout Asia: [1] gold, silver, copper, tin, lead, iron, and mercury. Zinc, arsenic, and antimony were also known during antiquity, but they were not recognised as distinct metals until later.
White lead" is the key ingredient in (now discontinued) lead paints. Ingestion of lead-based paint chips is the most common cause of lead poisoning in children. [7] [8] [9] Both "white lead" and lead acetate have been used in cosmetics throughout history, though this practice has ceased in Western countries. [10]