carbonyl

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carbonyl

[′kär·bə‚nil]
(organic chemistry)
A functional group found in organic compounds in which a carbon atom is doubly bonded to an oxygen atom (‒CO‒). Also known as carbonyl group.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The samples were stored at refrigerated temperature (4[degrees]C [+ or -] 1[degrees]C) and analysed at three day interval for various parameters (pH, colour and odour score, peroxide, thiobarbituric acid reacting substances [TBARS], total carbonyl contents and total plate count) up to 9 days.
The IR spectra of the PE-BIO films without exposure to C[O.sub.2] laser radiation show an IR absorption band at 1740 [cm.sup.-1] and stretching vibration of carbonyl group (C=O), whereas the IR spectrum of the LDPE films shows this band after being exposed to C[O.sub.2] laser radiation.
Carbonyl protein was determined by the method described in Levine et al.
To achieve the quantitative analysis of low molecular carbonyl compounds, the standards gas was made by the gasification of standards solution in a 2 L glass container as described in our previous study [21].
A weak significant positive correlation between protein carbonyls and age was only observed in the RASIG group (r = 0.098; P < 0.01, data not shown).
The research also discovered that elevated carbonyl concentrations returned back to normal after complete resection in patients who had a malignant nodule.
Jeon, "The pollution status of atmospheric carbonyls in a highly industrialized area," Journal of Hazardous Materials, vol.
All other subjects had an increase in carbonyl proteins and an even higher LLS-Score of 3 to 12 (Fig.1).
If the number of chain scissions was proportional to the number of carbonyls, it would be ~ 14 X [10.sup.-2] mol [1.sup.-1] at 20[degrees]C, that would correspond to [M.sub.w] = 66 kg [mol.sup.-1], against 109 kg [mol.sup.-1] for the initial value.
These modified diamines exhibit reduced reaction rates with NCOs primarily because their NH groups are secondary and therefore can H-bond with the closest carbonyl to form a five-membered ring (Fig.
Topics include the analysis of alkanes and cycloalkanes, alkenes and alkynes, aromatic compounds, hydroxyl-containing compounds, water, amines and amides, carbonyls, carbohydrates, amino acids, peptides and proteins, synthetic polymers and rubbers, and a history of NIR applications.
Incense burning produces a great deal of particulate matter and releases many possible carcinogens including polyaromatic hydrocarbons, carbonyls, and benzene.