Results 111 to 120 of about 335,927 (147)

Filter Paper Chromatography

Journal of the American Chemical Society, 1949
Consden, Gordon and Martin reported a very ingenious method for the separation of amino acids by filter paper chromatography in which phenol or some other appropriate organic solvent sweeps the applied amino acids along the filter paper, capillarity causing the organic solvent to move.
Bull Hb, Hahn Jw, Baptist Vh
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Paper Chromatography of Pterins

Nature, 1949
THE detection and identification of pterins in small quantities was carried out by Schopf and Becker1 in the course of their classical work on this class of pigments. They employed a chromatographic technique using 0·004 N aqueous hydrochloric acid or 0·01 N methyl alcoholic hydrochloric acid solutions on micro-absorption columns of alumina or ...
A. W. Johnson, P. M. Good
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The paper chromatography of oestrogens

Journal of Chromatography A, 1962
Abstract The separations of steroid oestrogens achieved by paper chromatography have been reviewed with special reference to studied involving epimeric oestrogens and to oestrogens which have been isolated recently. Methods of detection of these compounds on paper chromatograms have also been discussed.
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Quantitative Paper Chromatography [PDF]

Nature, 1949
Fisher, Parsons and Morrison1 have shown experimentally that a linear relation holds between the area of the spot of test substance and the logarithm of the concentration at which it is originally applied. A theoretical derivation can now be given.
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[7] Paper chromatography of antibiotics

Chromatographic Reviews, 1965
Publisher Summary This chapter discusses the principles of paper chromatography of antibiotics. It includes all steps of analysis beginning with the preparation of samples and papers, development techniques, detection methods, and means of documentation.
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Paper chromatography of dyes

Journal of Chromatography A, 1962
Abstract A descending paper chromatographic method for water-soluble dyes is described in which a pyridine—isoamyl alcohol—ammonia solent system is used. The relatinship between dye constitution and chromatographic behavious has been investigated.
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Paper Chromatography of Œstrogens

Nature, 1953
THE Burton, Zaffaroni and Keutman1 method for the paper chromatographic analysis of the adrenal cortical steroids has been found to be suitable for the non-steroid œstrogens of the hexœstrol series (hexœstrol, stilbœstrol, dienœstrol, trienœstrol2) and ethinyl œstradiol.
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Paper Chromatography and Paper Electrorheophoresis of Tuberculoproteins [PDF]

Nature, 1960
PAPER electrophoresis of proteins has on the whole proved to be a more satisfying means of separation than paper chromatography, owing to the physico-chemical properties of the proteins that make them rather unfit for the latter method1,2. Nevertheless there do exist methods of paper Chromatographic separation of, for example, enzymes, blood and serum ...
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Paper solubilization chromatography

Analytica Chimica Acta, 1961
The RF values of a series of eleven phenols have been determined using paper-chromatographic techniques on filter paper loaded with ion-exchange resin. The data have been used to predict the separation of various mixtures of these phenols by development with aqueous solutions of acetic acid.
Joseph Sherma, David Locke
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Quantitative paper chromatography

Analytica Chimica Acta, 1950
Abstract Using butanol saturated with N HCl as solvent, trivalent thallium can be separated quantitatively from iron, copper, nickel and cobalt by a new technique of paper chromatography which employs strips of paper pulp approximately 150 mm long, 25 mm. wide and 6 mm. thick, and capable of absorbing 1 to 2 ml of solution on a spot 25 mm in diameter.
J.R.A. Anderson, M. Lederer
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