نتایج جستجو برای: iodine compounds
تعداد نتایج: 247474 فیلتر نتایج به سال:
Iodine is an essential trace element for humans and animals because of its important role as a constituent of thyroid hormones. If the anthropogenic iodine-129 ((129)I, half-life: 1.6×10(7) years), which is released from nuclear facilities into the environment and has a long half-life, participates in the biogeochemical cycling of iodine, it potentially accumulates in the human thyroid gland an...
The iodine value (iodine number) and hydroxyl are important analytical characteristics of fats oils. (I2) required saturating the fatty acids present in 100 grams oil or fat. Iodine is a measure total number double bonds (-C=C-) Unsaturated compounds contain molecules with triple which very reactive towards iodine. has been determined according to Hanus monobromide glacial acetic acid, then amo...
Esters of 2-iodoxybenzoic acid (IBX-esters) are potentially valuable oxidizing reagents belonging to a new class of pentavalent iodine compounds with a pseudo benziodoxole structure.
It has been demonstrated chemically that the iodine bound to proteins of the serum is predominantly composed of thyroxine (1-4). The concentration of this protein-bound or serum precipitable iodine (SPI) appears to be closely correlated with the activity of the thyroid gland (5-7). It is probably the most precise clinical criterion of such activity that has yet been extensively employed. It is,...
A large number of iodine atoms can be introduced into a single molecule in a one-pot reaction using trifluoroperacetic acid-mediated electrophilic iodination methodology. The scope of this reaction was investigated extensively using several pyrazole substrates which resulted in nine polyiodo pyrazole compounds with iodine content as high as 80%. This synthetic methodology was also utilized succ...
Marine macroalgae species from the polar regions were investigated for their importance as natural sources of volatile halogenated compounds released into the biosphere. Several different halogenated C1 to C4 hydrocarbons were identified and their release rates determined. The compounds contained mainly bromine and iodine, and form was the dominant compound released. Although an annual atmosphe...
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