Hydroxyl radical with oxygen-containing organics

Reactions of hydroxyl radicals with polyfimctional group oxygen-containing organic compounds,... 

Kerr, J.A., and D.W. Stocker (1986a), Kinetics of the reactions of hydroxyl radicals with alkyl nitrates and with some oxygen-containing organic compounds studied under simulated atmospheric conditions, J. Atmos. Chem., 4, 253—262. 

In this schematic reaction equation, R is the fraction of an organic compound, which contains no heteroatom and needs one atom of oxygen to be transformed to fully oxidized elements. (Actual values of m and n depend on the elemental composition of R to be oxidized.) This reaction competes with the side reaction of hydroxyl radical discharge (direct or indirect through formation of H202 as intermediate) to 02 (Eq. 82) without any... 

Copper is an essential trace element. It is required in the diet because it is the metal cofactor for a variety of enzymes (see Table 50—5). Copper accepts and donates electrons and is involved in reactions involving dismu-tation, hydroxylation, and oxygenation. However, excess copper can cause problems because it can oxidize proteins and hpids, bind to nucleic acids, and enhance the production of free radicals. It is thus important to have mechanisms that will maintain the amount of copper in the body within normal hmits. The body of the normal adult contains about 100 mg of copper, located mostly in bone, liver, kidney, and muscle. The daily intake of copper is about 2—A mg, with about 50% being absorbed in the stomach and upper small intestine and the remainder excreted in the feces. Copper is carried to the liver bound to albumin, taken up by liver cells, and part of it is excreted in the bile. Copper also leaves the liver attached to ceruloplasmin, which is synthesized in that organ. 

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