Arsenic in the environment may be responsible for a hidden burden of disease risk linked to various cancers and other health problems, according to researchers speaking at a special symposium on the topic at the ACS meeting in New Orleans in April 2013. Arsenic levels in soils around the US ...
exposure of similar duration requires that the concentration be less than 0.05 parts per million in the air. In addition to the many uses of arsenic compounds as herbicides and pesticides, they have in several instances been employed as pharmacological agents. The first successful antisyphilitic agen...
Gray arsenic is the most common. It has a metallic sheen and conducts electricity. Yellow arsenic is metastable, is a poor electrical conductor and does not have a metallic sheen. It is prepared by cooling gray arsenic vapor in liquid air. It reverts to gray arsenic at room temperature. Bl...
Arsenic in the elemental form is a brittle, grayish crystal that becomes darker when exposedto air. It is seldom found in the pure elemental form but rather in minerals (compounds). Ithas a long history of use as a poison, and many alchemists were poisoned when using it intheir attempts ...
When heated in air, arsenic oxidizes to arsenic trioxide; the fumes from this reaction have an odour resembling garlic. This odour can be detected on striking arsenide minerals such as arsenopyrite with a hammer. Arsenic (and some arsenic compounds) sublimes upon heating at atmospheric pressure, ...
Arsenic forms naturally in the environment including in soil, water, air,. Arsenic also occurs naturally in living beings such as plants and animals. Additionally, Arsenic can make its way into the atmosphere by ways including volcanic action, and forest fires. In addition to the natural occurren...
Arsenic is a member of Group 15 of the Periodic Table. This used to be known as Group VB (or Group VA) depending on whose textbook was being used. The elements in the Group are as follow: N, P, As, Sb, Bi, of atomic numbers, respectively, 7, 15, 33, 51, and 83. The metall...
Gray arsenic is the ordinary stable form. Arsenic compounds can be categorized as inorganic and organic. Inorganic compounds do not contain an arsenic–carbon bond while organic compounds do. 2.7 Color/Form Silver to black 2.8 Decomposition When arsenic is heated in air it will burn and form a...
Hydride generator atomic absorption spectrophotometry (HG-AAS) is employed for the determination of arsenic in air, duplicate diet and body fluids. The detection limit for arsenic is 0.02 ppb. The reliability of the analysis is assessed through analysis of Standard Reference Materials (SRMs) of soil...
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