Kendrick mass

Flughey, C. A. Hendrickson, C. L. Rodgers, R. R Marshall, A. G. Kendrick mass defect spectrum A compact visual analysis for ultrahigh-resolution broadband mass spectra. Anal. Chem. 2001, 73,4676-4681. 

The Kendrick mass scale is based on the definition M(cr = 14.0000 u. [28] Conversion from the lUPAC mass scale to the Kendrick mass scale is achieved by multiplying each mass by 14.00000/14.01565 = 0.99888. The intention of the Kendrick mass scale is to provide an effective means of data reduction, an issue gaining importance again as a result of the steadily increasing resolution and mass accuracy (next paragraphs) of modem mass spectrometers. 

Fig. 3.13. Kendrick mass defect versus nominal Kendrick mass for odd-mass ions ([M-H] ions). The compound classes (O, O2, O3S and O4S) and the different numbers of rings plus double bonds (Chap. 6.4.4) are separated vertically. Horizontally, the points are spaced by CH2 groups along a homologous series. [29] By courtesy of A. G. Marshall, NHFL, Tallahassee.

Next, we define the Kendrick mass defect, ffJdefectKendrick, as... 

Hughey, C.A. Hendrickson, C.L. Rodgers, R.P. Marshall, A.G. Kendrick Mass Defect Spectrum A Compact Visual Analysis for Ultrahigh-Resolution Broadband Mass Spectra. Anal. Chem. 2001,75,4676-4681. 

Kendrick, E. A mass scale based on CH = 14.0000 for high resolution mass spectrometry of organic compounds. Anal. Chem. 1963,35,2146-2154. 

Absorption of gases and vapour by drops has been studied by Garner and Kendrick(15) and Garner and Lane(16) who developed a vertical wind tunnel in which drops could be suspended for considerable periods of time in the rising gas stream. During the formation of each drop the rate of mass transfer was very high because of the high initial turbulence. After the initial turbulence had subsided, the mass transfer rate approached the rate for molecular diffusion provided that the circulation had stopped completely. In a drop with stable natural circulation the rate was found to approach 2.5 times the rate for molecular diffusion. 

Garner, F. H. and KENDRICK, P. Trans. Inst. Chem. Eng. 37 (1959) 155. Mass transfer to drops of liquid suspended in a gas stream. Part I—A wind tunnel for the study of individual liquid drops. 

Kendrick, E. Mass Scale Based on CH2 = 14.0000 for High-Resolution Mass Spectrometry of Organic Compounds. Anal. Chem. 1963, 35. 2146-2154. 

Here, V represents organisms and S is substrate. M Kendrick and Pai took the measure of V to be the population density N. Inasmuch as a stoichiometric relation is assumed, however, the measure of V ought not to be population density, since the amount of substrate necessary to form one organism does not remain constant under different circumstances of propagation. Monod recommended instead that one use la masse de la substance vivante, which fits the description of the quantity we called C earlier. In other words, a distributed model, rather than a segregated model, is to be used if stoichiometric relations appear. Monod s stoichiometric postulate is then... 

Boddy,A.V,Sludden,I,Griffin,M.J.,Garner,C,Kendrick, I, Mistry, R, Dutreix, C., Newell, D.R., O Brien, S.G. (2007) Pharmacokinetic investigation of imatinib nsing accelerator mass spectrometry in patients with chronic myeloid leukemia. Clinical Cancer Research, 75(14), 4164-4169. 

Wolff, R.E., Greff, M. and McCloskey, J.A. (1968), Mass spectra of long chain hydroxy esters. In Advances in Mass Spectrometry (ed. D.A. Kendrick), Institute of Petroleum, London, p. 193. 

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