Chromatographic analysis of gases

The performance of electrical transformers can be monitored by chromatographic analysis of the gases dissolved in the mineral oil contained in the isolating system. In a study of the effects of five factors on chromatographic results for the analysis of ethylene, a fractional factorial was executed by two students (M.M. da Silva Jr. and C.A.G. da Camara) as an out-of-class assignment in a chemometrics course (Table 4A.3). [Pg.182]

Of the five main effects, the one for factor 3 (equilibrium time) is clearly secondary. As for the other four, we cannot discard the possibility that some of their values are mainly due to interactions. For example, the effect of stirring (4) is confounded with interaction 12 (sample volume and temperature) while the effect of pressurization (5) is confounded with the interaction of temperature and time (23). Actually, [Pg.182]

Smith, G., Ellis, M. M., Chromatographic Analysis of Gases from Soils... [Pg.29]

Deans, D. R., Huckle, M. T., Peterson, R, M. New combination of columns for gas chromatographic analysis of gases by using a non mechanic switching technique. Chromatographia4, 279(1971). [Pg.43]

Folmer, O. F. A syringe dilution method of calibration for the gas chromatographic analysis of gases. Anal. Chim. Acta 56, 447 (1971). [Pg.49]

Lilburne, M. T. Gas chromatographic analysis of gases extracted from metals by vacuum fusion. Analyst 91, 571 (1966). [Pg.60]

Smith, G.H. and Ellis, M.M., 1963. Chromatographic analysis of gases from soils and vegetation related to geochemical prospecting for petroleum. Amer. Assoc. Pet. Geol. Bull., 47 1897-1903. [Pg.505]

Kinetic Analysis. Gas chromatographic analysis of the headspace gases confirms that the predominant reaction product is CO.. The negligible presence of N and 0 are probably due, at least in part, to air contamination during sample preparation for the GC analysis. The results of the GC analysis are shown in Table II. [Pg.432]

Janak, J. Chromatographic semimicro-analysis of gases, IV. and V. Separating and analysis of gaseous hydrocarbons. VI. The analysis of inert gases. Collection Czech. [Pg.50]

Hachenberg, H., Gutberlet, J. Gas chromatographic trace analysis of gases. Brenn-stoff-Chem. 49, 242, 279 (1968). - Anal. Abstr. 18, 643 (1970). [Pg.52]

Lutz, M., Massimo, D. Preliminary study of rapid gas chromatographic analysis of the permanent air gases. Method. Phys. Anal. 6, 384 (1970). — Anal. Abstr. 21,... [Pg.52]

Zalinyan, V., Ust yan, L. Chromatographic analysis of light gases containing hydrogen cyanide. Prom. Armenii, Sov. Nar. Khoz. Arm. SSR, Tekhn-Ekon. Byull. 7, 36... [Pg.53]

Aubeau, R., Leroy, J., Champeix, L. Influence of the degree of hydration of the absorbent on the chromatographic analysis of permanent gases. J. Chromatog. 19, 249... [Pg.55]

Falecki, Z., Zielinski, E. Determination of hydrogen in castings by chromatographic analysis of the gases extracted under high vacuum. Przeglad Odlewnictwa 15,... [Pg.59]

K. Schoene, H.-J. Bruckert and J. Steinhanses, Derivatization of acylating gases and vapors on the sorbent tube and gas chromatographic analysis of the products by atomic emission and mass spectrometric detection, Fresenius J. Anal. Chem., 345, 688-694 (1993). [Pg.197]

Sugisaki, R., Takeda, H., Kawabe, 1. and Miyazaki, H., 1982. Simplified chromatographic analysis of H2, Re, Nc, Ar, Ni and CH4 in subsurface gases for seismo-geochemical studies. Chem. Geol., 36 217-226. [Pg.506]

There are now portable micro-chromatographs available weighing only a few kg for the rapid analysis of gases and volatile products. Although containing a reservoir of the carrier gas to assure their autonomy they are not bulky (Figure 2.19). [Pg.52]

Infrared spectroscopy can be used to perform qualitative analysis of gases. Pierson et al. (1956) have given a chart to be used for this purpose. Also, infrared spectroscopy and gas chromatography are a useful combination for characterizing volatile substances (see Appendix 1). Sometimes fractions from a vapor fractometer are collected as vapors in a gas cell. White et al. (1959) have described a microgas cell of 1 m path for use with a beam condenser to observe the spectra of gas chromatographic fractions less than 0.05 % of the total charge. [Pg.58]

A chromatographic analysis of the effluent stream indicates that the composition of the effluent gases in mole fractions is... [Pg.19]

Chromatographic Analysis of Multiple Tracer Inert Gases in the Presence of Anesthetic Gases Anesthesiology 49(1) 31-36 (1978) CA 89 140097z... [Pg.68]

Porous polymers are the adsorbents of choice for most applications focusing on the analysis of gases, organics of low carbon number, acids, amines, and water (17,18). The presence of water is detrimental to gas-liquid chromatographic packings. Because water is eluted with symmetric band profiles on a... [Pg.79]

FIGURE 13.14 Typical mstnimeiit sch atic (a) and chromatogram (b) for the automated gas chromatographic analysis of coal liquefaction gases. Column lA 18 ft—27% bis (EE) A + 3.5% Carbowax 1540 + 6.5% DC 200/500 mesh. Column 1C 12 in. on Chromosorb P-AW 60/80 mesh. Column IB 3 ft—OPN/Porasil C 80/100 mesh. Column 2 6 ft—80% Porapak N + 20% PORAPAK Q 50/50 mesh. Column 3 7 ft—molecular sieve 13 x 45/60 mesh. Column 4 6 ft—8% OV-101 on Chromosorb W-AWDMCS, 80/100 mesh. (Reprinted with permission from Reference 56, Journal of Chromatographic Science, Cop)night 1982, Preston Publications, A Division of Preston Industries, Inc.)... [Pg.667]

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