Arsenic and its compounds are poisonous. They have been used to make rat poison and some insecticides. Small amounts of arsenic are added to germanium to make transistors.
Gallium arsenide GaAs can produce laser light directly from electricity. If you were paying careful attention to the physical data listed above, you may have noticed that arsenic's boiling point is lower than its melting point. This occurs because these two temperatures are measured at different atmospheric pressures. When heated at standard atmospheric pressure, arsenic changes directly from a solid to a gas, or sublimates, at a temperature of K.
And since rice is a staple in the diets of many infants and young children, the FDA has been closely monitoring rice for safety, ensuring that infant rice cereal stays under parts per billion ppb for levels of inorganic arsenic. One study , published in the Nutrition Journal, suggested that other types of foods, including white wine, beer and Brussels sprouts, may be linked to higher levels of arsenic in humans as well.
The FDA has also taken steps to monitor apple juice. Arsenic poisoning can cause all sorts of health problems. A large dose can cause immediate sickness and death, while long-term exposure is associated with higher rates of skin, bladder and lung cancers , as well as heart disease, according to the FDA.
Paracelsus, a 16th-century Swiss German philosopher and toxicologist, once famously said, "all things are poison, and nothing is without poison.
Only the dose permits something not to be poisonous. But can a toxic element really be necessary for life? A growing body of evidence says yes. Some toxic metals, in trace amounts, might actually be essential nutrients , according an analysis in the journal EMBO Reports. In fact, scientists have found that the body needs arsenic , at a level of 0.
Since arsenic is such a strong toxin, farmers, as well as the U. It took several decades for everyone to realize what a terrible idea it was to spray this carcinogenic chemical on the food supply. In the s, all of these arsenate pesticides were finally banned, but some of the residue still lingers in the soil today, according to The Lead Group, Inc.
Starting in the s, arsenic-treated wood preservatives, such as chromated copper arsenate CCA , were widely used to prevent rotting in lumber. Although these preservatives still aren't officially banned, manufacturers voluntarily stopped the production of arsenic-treated wood products in , according to the EPA. In , a British physician named Thomas Fowler presented his arsenic-based, cure-all tonic known as Fowler's solution.
The tonic was commonly used to treat skin conditions, such as psoriasis. Home What is Arsenic? Treatment Options and Technologies Arsenic Links. Unfortunately for the alchemists and other metal workers, working with metals is dangerous work when there are no safety rules for proper handling of metals! In ancient Greece, Hephaestus was the only Greek god who was physically imperfect, and he was the metalworker actually, he was also the only Greek god who did any work at all!
The deformity of Hephaestus might reflect the effects of working with metals. Alchemists and blacksmiths using metals contaminated with arsenic and other toxic compounds were probably among the first people to suffer from occupational work-related exposure to toxins.
He also described the relationship between dose how much of something you consume and response what happens to you. Because of this, he is widely regarded as the inventor of modern toxicology: the study of toxic chemicals. Cesare Borgia Some say that Napoleon Bonaparte see Napoleon Series , French emperor from — , was murdered by arsenic poisoning.
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