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Arsenic is the 53rd most abundant element in the Earth's crust, comprising about 1.5 parts per million (0.00015%). [ 43 ] Typical background concentrations of arsenic do not exceed 3 ng/m 3 in the atmosphere; 100 mg/kg in soil; 400 μg/kg in vegetation; 10 μg/L in freshwater and 1.5 μg/L in seawater. [ 44 ]
A 2007 study found that over 137 million people in more than 70 countries are probably affected by arsenic poisoning of drinking water. The problem became a serious health concern after mass poisoning of water in Bangladesh. [1] Arsenic contamination of ground water is found in many countries throughout the world, including the US. [2]
Tin is an essential metal in the creation of tin- bronzes, and its acquisition was an important part of ancient cultures from the Bronze Age onward. Its use began in the Middle East and the Balkans around 3000 BC. Tin is a relatively rare element in the Earth's crust, with about two parts per million (ppm), compared to iron with 50,000 ppm ...
Elements often discussed as toxic include cadmium, mercury and lead, [6] all of which appear in the World Health Organization's list of 10 chemicals of major public concern. [7] Other examples include chromium and nickel, [8] thallium, bismuth, arsenic, antimony and tin. [4] These toxic elements are found naturally in the earth.
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 ]
Arsenic, a naturally occurring substance that can be found in air, water and soil but can also be released into the environment by agricultural and industrial processes such as mining and metal ...
v. t. e. The arsenic (As) cycle is the biogeochemical cycle of natural and anthropogenic exchanges of arsenic terms through the atmosphere, lithosphere, pedosphere, hydrosphere, and biosphere. Although arsenic is naturally abundant in the Earth's crust, long-term exposure and high concentrations of arsenic can be detrimental to human health.
In fact, when ingested, arsenic — a natural element found in the earth's crust — can affect several organs and systems, including the nervous, respiratory, cardiovascular, immune and endocrine ...