Metric determinant

Arakawa Y, Wada O, Manabe M (1983) Extraction and fluoro-metric determination of organotin compounds with Morin. Analytical Chemistry, 55 1901 -1904. 

Vela, M., Saurina, J., and Hemandez-Cassou, S., Flow-injection spectrophoto-metric determination of amino acids by using l,2,-naphthoquinone-4-sul-fonate immobilized on an ion exchange resin, Anal. Lett., 31, 313, 1998. 

The determination of sulphur in the tube with bead packing is carried out in a manner analogous to that employed in the argento-metric determination of halogen (see p. 73). 

Figure 51 Working curves for selected values of the parameter 6 for the chronoampero-metric determination of the rate constant of an irreversible chemical reaction following an electron transfer...

Castle, L., Sharman, M. and Gilbert, J. (1988b). Gas chromatographic-mass spectro-metric determination of epoxidized soybean oil contamination of foods by migration from plastic packaging, /. Assoc. Ojf. Anal. Chem., 71, 6, 1183-1186. 

The total solids concentration in parts per million is designated as C. In most cases, as in Table I, this is inferred from electro-metric determinations of conductivity, which respond only to dissolved solids. Usually, suspended solids are small. 

What is known about the enthalpy of formation of the other fragment radical, Ph2C=N The enthalpy of formation of H is well-established and that of Ph2C=NH has been calori-metrically determined. The N—H bond energy in this imine, i.e. roughly the enthalpy of reaction 54, has been reported, twice . ... 

RI Allen, KJB ox, JEA Comer, KY Tam KY. Multiwavelength spectrophoto-metric determination of acid dissociation constants of ionizable drugs. J. Pharm. Biomed. Anal. 17 699-712 (1998). 

A Hg Hg2C204 secondary electrode has been proposed [43] for the potentio-metric determination of the oxalate ion concentration. 

Gopinath et al. describe the reduction of U(VI) to U(IV) at an activated platinum electrode in 1 M H2SO4 for the coulo-metric determination of uranium [63]. The platinum working electrode is chemically and electrochemically oxidized and then electrochemically reduced to produce a surface that is more active toward uranium... 

A Beckman Model DU spectrophotometer was used for the spectrophoto-metric determination of cobalt (II). 

Figure 5.1 shows the spectrophoto metrically determined liberation of p-nitro phenol (pNPOH) from pNPOAc in the absence (curve a) and presence (curve b) of metal catalyst. The catalyzed reaction exhibits biphasic kinetics, characterized by an initial burst of pNPOH release, followed by a slower linear phase. 

Suppose / independent reference intensities Rt have been selected, each with corresponding conjugate extensity Xt. The associated vectors R ) are linearly independent, the corresponding metric matrix is nonsingular, and the associated metric determinant M is nonzero. Because the intrinsic dimensionality /of is clear in context, we... 

Data from J. / B. Nevado, J. R. Flores, and M. J. V. Llerena, Simultaneous Spectrophoto-metric Determination ofTartrazine, Sunset Yellow, and Ponceau 4R in Commercial Products," Fresenius J. Anal. Chem. 1998, 361, 465. 

Figure 9. Intercomparison of O, LPA and H, CTM titration-mass spectro-metric determinations of [HO] at Fritz Peak, Colorado. (Reproduced with permission from reference 88. Copyright 1992 American Association for the Advancement of Science.)...

Spectrophoto-metric Determination of Protein Concentration In this equation, the absorptivity value, 31, has units of ml/mg cm and b is the path length in cm. 

The test kit for the determination of acetic acid released is used according to the manufacturer s protocol (see also below). Spectropho to metric determination of NADH concentration is performed at 340 nm in the milliliter scale, e. g., in an Ultrospec 3000 photometer, and on the microliter scale in a fluorimeter, e. g. FLUOstar. 

Note that subscripts c and a have been added to differentiate the cathodic and anodic mass transport limiting currents, respectively. These relationships are important in general electrochemistry experiments, because they allow the voltam-metric determination of standard potentials. 

A. Avramescu, T. Noguer, V. Magearu and J.-L. Marty, Chronoampero-metric determination of D-lactate using screen-printed enzyme electrodes, Anal. Chim. Acta, 433(1) (2001) 81-88. 

P. Fanjul-Bolado, M.B. Gonzalez-Garcia and A. Costa-Garcia, Voltam-metric determination of alkaline phosphatase and horseradish... 

Abdel-Hamid, M., Novotny, L., and Hamza, H. (2001). Liquid chromatographic-mass spectro-metric determination of celecoxib in plasma using single-ion monitoring and its use in clinical pharmacokinetics. J. Chromatogr. B Biomed. Sci. Appl. 753 401-408. 

Table 4.2 Spectra metrically determined DNA can be quantified with the estimated amounts of DNA shown.

Matejfcek D (2011) On-line two-dimensional liquid chromatography-tandem mass spectro-metric determination of estrogens in sediments. J Chromatogr A 1218 2292-2300... 

The Chi in the hairy roots and parent plant organs was extracted with a mixture of 80% acetone and 20% phosphate buffer (2.5 mol m 3,pH 7.8), and analyzed according to the method described by Porra et al. [17]. The activities of SOD and POD in the hairy roots and parent plant organs were spectrophoto-metrically determined using ferricytochrome C [18] and o-aminophenol [19], respectively. Fructose in the medium was analyzed by the Somogyi-Nelson method [20] or was determined using an HPLC with a refractive index detector. Light intensity was measured with a thermopile on the outer walls of flasks at the level of the medium surface or at the top of the Petri dish, and expressed as the mean of values determined at several positions. 

The MMA homopolymer and the unreacted PVA are removed from the reaction product by the selective extraction method. The grafted branch PMMA is separated from the backbone by oxidative cleavage of all 1,2-glycols of PVA (about 2 mole%)29 Molar masses of the isolated graft copolymers and the separated branches are osmo-metrically determined, after acetylation of hydroxyl groups in benzene. The chemical composition of the graft copolymers is determined from the saponification value of the acetylated sample. 

Agui, L., Vega-Montenegro, D., Yanez-Sedeno, P. and Pingarron, J. M. (2005), Rapid voltam-metric determination of nitroaromatic explosives at electrochemically activated carbon-fibre electrodes. Anal. Bioanal. Chem., 382(2) 381-387. 

In this stability test, which was proposed by Hansen in 1925, 8 samples of the material to be tested are heated up to 110 °C (230°F). Every hour one of the, samples is taken out of the oven, extracted with C02-free water, and the pH of the filtrate determined. Since the decomposition of propellants based on nitrates is usually accompanied by the liberation of C02, which interferes with the potentio-metric determination, the results obtained are unsatisfactory, and the test is now hardly ever used. 

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