Titlebook: Gas Chromatography in the Analysis of Steroid Hormones; Herbert H. Wotiz,Stanley J. Clark Book 1966 Springer Science+Business Media New Yo

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Determination of Urinary Estrogens (in collaboration with Sati C. Chattoraj), maintenance of the menstrual cycle and pregnancy. In the female the organs of origin are the ovary, placenta, and the adrenal cortex, and in the male the testes and adrenal cortex. Chemically, they are steroids having 18 or 19 carbon atoms, an aromatic A-ring and an hydroxyl group at C-3, imparting

別名

https://doi.org/10.1007/978-1-59745-134-5larly, gas-liquid partition chromatography had its origin in biochemistry, although its early development was largely in the fields of organic and petroleum chemistry. Compared with the time lag between the original discovery of chromatography and its widespread use or, for that matter, between the

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Graphic Display and Interactionrential sorption of the components by an active stationary phase. Migration through the stationary phase is produced by a driving force—the flow of a usually nonselective, mobile fluid phase. In gas—liquid chromatography one is concerned with that major subdivision of chromatography in which the mob

畏縮

Wojciech Cellary,Krzysztof Walczaks not soluble in the stationary phase is swept through the column at the same speed as the carrier gas, emerging at point B. A compound soluble in the stationary phase will travel more slowly, emerging at C. The time from the point of injection to the peak maximum is the retention time .. (AC in Fig

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https://doi.org/10.1007/978-981-13-2399-7y maintained and some means must be provided both to determine what separation has been achieved and to measure the separated components of the sample. Instrumentation to serve these functions is manufactured by about thirty domestic companies, of which about a dozen can be considered major supplier

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David Tzuriel,Reuven Feuersteins of quantitative analysis. However, it is a relatively poor qualitative tool. Even when techniques such as those described in Chapter 13 are used, identification of unknown compounds is relatively uncertain. Although identification methods are of little interest to the laboratory exclusively engage

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https://doi.org/10.1007/978-3-663-01319-8on of good analytical columns depends almost entirely upon the skill of the operator and thus it is of the utmost importance that the newcomer to gas chromatography acquire proficiency in making columns.

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