Fastness determination

Tateo, F. and Bonomi, M., Fast determination of Sudan I by HPLC/APCI-MS in hot chili, spices, and oven-baked foods, J. Agric. Food Chem., 52, 655, 2004. 

Felcht reports that the testing of industrial-scale processes can be performed with low expenditure by using micro reactors, since this should result in a faster time to market of the development [137]. He also sees uses for micro reactors at the laboratory scale as a means of high-throughput screening and model examinations such as fast determination of reaction kinetics. 

Schellen A. et al., 2003. Generic solid phase extraction-liquid chromatography-tandem mass spectrometry method for fast determination of drugs in biological fluids. J Chromatogr B 788 251. 

A spectrophotometric method for determination of primary and secondary amines requires development for each particular compound, determining the kinetics of reaction of the amine with sodium l,2-naphthoquinone-4-sulfonate (143) and the UVV absorption spectrum of the product, under a set of fixed conditions. The procedure was applied to determination of ephedrine (30) and amphetamine (28) in pharmaceutical samples339. Reagent 143 in a FLA. system was used for the fast determination of lysine (144) in commercial feed samples by multivariate calibration techniques, without need of chromatographic separation340. 

A solution containing an amino acid is passed through a polymeric bed containing Cu(II) ions, forming a complex which is further reacted with zincon (149) and the blue color measured at 600 nm in a FTA system. This was applied for fast determination of amino acids in pharmaceutical formulations344. 

Ayouni L. Cazorla G. Chaillou D. Herbreteau B. Rudaz S. Lanteri P. Carrupt P.A. Fast determination of lipophilicity by HPLC. 

Liu CZ, Zhou HY, Zhao Y. (2007) An effective method for fast determination of artemisinin in Artemisia annua L. by high performance liquid chromatography with evaporative light scattering detection. Anal Chim Acta 581 298-302. 

Tateo, F Bononi, M. Fast Determination of Sudan 1 by HPLC/APCl-MS in Hot Chilli, Spices, and Oven-Baked Foods.]. Agric. Food Chem. 2004, 52, 655-658. 

Rottenbacher, L., Behlau, L. and Bauer, W., The application of infrared gas analyzers for the fast determination of kinetic parameters for ethanol production from glucose, ]. Biotech., 2 (1985a) 137-147. 

K Aitzetmiiller, J Pilz, R Tasche. Fast determination of vitamin A palmitate in margarines by HPLC. Fette Seifen Anstrichm 81 40-43, 1979. 

The chemical tests include Determination of the moisture and ash detection and determination of the dressing, qualitative test of the nature of the fibre, quantitative determination of the different kinds of fibre in the sample, investigation of the nature of the dye and of its fastness, determination of the nature and extent of the waterproofing, detection and estimation of the weighting of silk, and distinction between certain crude and bleached products. The methods used are as follows. 

The same technique can be used in pumping stations for the fast determination of the point of leak (valves, joints, connections, etc.). In this case it is based on the temperature difference of the metallic part involved in the leak. By analysing the images of the structures and equipment it is usually not difficult to determine the parts that are responsible for the leak. 

Koal, T., Sibum, M., Koster, E., Resch, K., and Kaever, V. (2006). Direct and fast determination of antiretroviral drugs by automated online solid-phase extraction-liquid chromatography-tandem mass spectrometry in human plasma. Clin. Chem. Lab. Med. 44 299-305. 

Indicator reactions are reviewed in [78], [79], Another area of application is the fast determination of bacterial capacity in industrial wastewaters [80] and the determination of dehydrogenase activity in sludges [81],... 

Some simple "test tube" reactions can be used to determine the presence and/or the type of hydroxyl groups in organic molecules. Although modern spectroscopy has made the knowledge of this type of analytical chemistry less imperative today, this section will try to cover a few of the most important reactions which are still useful for the fast determination of the hydroxyl group. 

An extensive study of elongases will take time, but is necessary to get a better insight into their roles. In this respect, the use of RNAi knockdown of genes specifically induced in biosynthesis tissues (oenocytes) could allow relatively fast determination of - at least -the genes involved. 

Looking at recent FFF developments, one can try to predict some future trends. One is certainly the on-line coupling of absolute techniques like MALLS to the fractionating FFF channel which can yield very fast determinations of the distribution of molar mass and other molecular properties. In this respect, the poten-... 

Guo, L., Lee, H.K. Low-density solvent-based solvent demulsification dispersive liquid-liquid microextraction for the fast determination of trace levels of sixteen priority polycyclic aromatic hydrocarbons in environmental water samples. J. Chromatogr. A 1218, 5040-5046 (2011)... 

Jantti suggested to use triple points of kinetic adsorption curves. He showed that this could result in a fast determination of the equilibrium value w,. To get such a quick estimate of the values of the parameters from measured values of m, he introduced equation (2) ... 

The PAMPA model is a simple model for fast determination of transcellular in vivo drug absorption. Coating a hydropho-... 

Determine the melting point of one or more of the following unknowns to be selected by the instructor (Table 2) and on the basis of the melting point identify the substance. Prepare two capillaries of each unknown. Run a very fast determination on the first sample to ascertain the approximate melting point and then cool the melting point bath to just below the melting point and make a slow, careful determination using the other capillary. 

A comprehensive discussion is given by Tischmeyer. Only in the case when the reaction rate is slow is a fast determination of the phase equilibrium possible with a standard apparatus. In many other cases, special equipment must be used. A flow apparatus enables to resolve the reaction time as a reaction locus. So, an appropriate flow will make it possible to make the measurements. 

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