نتایج جستجو برای: iodine compounds

تعداد نتایج: 247474  

Journal: :Microbes and environments 2008
Seigo Amachi

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...

Journal: :American Journal of Analytical Chemistry 2023

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...

Journal: :Chemical communications 2004
Viktor V Zhdankin Dmitry N Litvinov Alexey Y Koposov Thanh Luu Michael J Ferguson Robert McDonald Rik R Tykwinski

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.

Journal: :The Journal of clinical investigation 1951
E B MAN D M KYDD J P PETERS

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,...

Journal: :Dalton transactions 2016
Deepak Chand Chunlin He Lauren A Mitchell Damon A Parrish Jean'ne M Shreeve

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...

Journal: :Environmental science and pollution research international 2001
F Laturnus

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...

Journal: :Journal of Photopolymer Science and Technology 2002

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