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Other bromine isotopes are all radioactive, with half-lives too short to occur in nature. Of these, the most important are 80 Br (t 1/2 = 17.7 min), 80m Br (t 1/2 = 4.421 h), and 82 Br (t 1/2 = 35.28 h), which may be produced from the neutron activation of natural bromine. [31] The most stable bromine radioisotope is 77 Br (t 1/2 = 57.04 h).
Anthropogenic and natural sources of bromine. The major sources include sea spray, salt lakes, marshes, volcanos, anthropogenic sources. Sinks include exchange of brominated compounds with the stratospheric and troposphere.Bromine's chemistry is linked to other halogens such as chlorine and iodine amplify atmospheric cycling that contributes to troposphere and stratosphere ozone layer ...
The high-bromine brines in the Appalachian Basin are found in Silurian and Devonian rocks, in Pennsylvania, Ohio, and West Virginia. The principal source of the brine in Ohio and West Virginia was the Pottsville Formation, also called the Big Salt Sand. In Pennsylvania, bromine brine was pumped from the Pocono Sandstone. [2]
Bromine (35 Br) has two stable isotopes, 79 Br and 81 Br, and 35 known radioisotopes, the most stable of which is 77 Br, with a half-life of 57.036 hours.. Like the radioactive isotopes of iodine, radioisotopes of bromine, collectively radiobromine, can be used to label biomolecules for nuclear medicine; for example, the positron emitters 75 Br and 76 Br can be used for positron emission ...
Bromine compounds are compounds containing the element bromine (Br). These compounds usually form the -1, +1, +3 and +5 oxidation states. Bromine is intermediate in ...
A chocolate bar and molten chocolate. Chocolate is made from the cocoa bean, which is a natural source of theobromine. Theobromine is the primary alkaloid found in cocoa and chocolate. Cocoa butter only contains trace amounts of theobromine. There are usually higher concentrations in dark than in milk chocolate. [15]
More specifically, these were animal studies that found BVO had "toxic effects on the thyroid gland," Thomas Galligan, Ph.D., principal scientist for food additives and supplements at the Center ...
The most pervasive is the naturally produced bromomethane. One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants , and in fact fire-retardant manufacture is currently the major industrial use of the element bromine.