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The contamination in the Ganga-Brahmaputra fluvial plains in India and Padma-Meghna fluvial plains in Bangladesh demonstrated adverse impacts on human health. [113] Arsenic poisoning from exposure to groundwater is believed to be responsible for the illness experienced by those that witnessed the 2007 Carancas impact event in Peru, as local ...
The United States' Environmental Protection Agency states that all forms of arsenic are a serious risk to human health. [19] The United States' Agency for Toxic Substances and Disease Registry ranked arsenic number 1 in its 2001 prioritized list of hazardous substances at Superfund sites. [20] Arsenic is classified as a Group-A carcinogen. [19]
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. [1] [2]
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]
Arsenic is a moderately abundant element in Earth's crust, and although many arsenic compounds are often considered highly toxic to most life, a wide variety of organoarsenic compounds are produced biologically and various organic and inorganic arsenic compounds are metabolized by numerous organisms.
Such imaging can be enhanced by manipulation of the ligands in a complex to create specificity so that the complex will be taken up by a certain cell or organ type. [3] [4] Figure 1. Structure of Bleomycin A2. Examples of metals used for diagnosis include: Technetium. 99m Tc is the most commonly used radioisotope agent for imaging purposes. It ...
In the 18th century, William Withering discovered that arsenic trioxide, when used in small doses, exhibited therapeutic effects. [6] During the same period, Thomas Fowler prepared a 1% solution of arsenic and potassium carbonate, which was used to treat skin diseases (primarily psoriasis) until the 20th century. [7]
Arsenical keratosis (AK) is growth of keratin on the skin caused by arsenic, [1]: 725 which occurs naturally in the Earth's crust and is widely distributed in the environment, [2] Arsenical compounds are used in industrial, agricultural, and medicinal substances.