Identification of barbiturates by thin-layer chromatography
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چکیده
منابع مشابه
Identification of Barbiturates by Thin-layer Chromatography.
in cases of overdose and identification of the actual barbiturate concerned may be impossible because of the closely similar Rf values of this group. Jackson (1960) described treatment with hot sulphuric acid before paper chromatography to distinguish between barbiturates of similar chromatographic mobility. The inert nature of the silica gel supporting medium used in thin-layer separations ena...
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B ECAUSE barbiturates are relatively easily available and much used drugs, specimens from suspected cases of poisoning are frequently submitted to the laboratory for routine chemical examination. Since their urinary excretion begins early (because they are quickly absorbed), they can often be identified 1-2 hours after administration. The specimen of choice for examination is therefore the urin...
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Solvent systems are described which permit class separations of various peroxidized lipids by thin-layer chromatography. This procedure has proved useful in biological studies and for testing the deterioration of lipids. Proof is given that the least polar peroxides of methyl esters, glycerides, and fatty acids are monoperoxides; it is then assumed that the least polar peroxides in the other te...
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S TATISTICS conmpiled by time l’oison Control Center, New York City Department of Heaitlm, indicate fimat barbiturate imitoxication in adults ranks first as a cause of poisonilmg (1). The need for a rapid and sensitive method for detecting ammd ideiitifyiimg barbiturates in body fluids for diagnostic purpose is obvious. Even though timere Imave been mamiy analytic methods described in recelmt y...
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The carotenoids of yellow, red and tangerine tomato fruits were separated and identified by thin-layer chromatography (TLC). β-carotene is extracted with a mixture content hexan and acetone. The various systems of adsorbents and solvents for TLC of carote and tomato carotenes were examined, and it was revealed that the most suitable TLC system for separation and identification was silica gel pl...
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ژورنال
عنوان ژورنال: Journal of Clinical Pathology
سال: 1965
ISSN: 0021-9746
DOI: 10.1136/jcp.18.4.482