The determination of methionine by gas-liquid chromatography
نویسندگان
چکیده
منابع مشابه
The determination of methionine in proteins by gas-liquid chromatography.
Intact methionine residues in proteins were rapidly and precisely determined by measuring methyl thiocyanate released during the reaction with CNBr and separated by g.l.c. Conditions for the reaction and for chromatography on columns of Porapak P-S are described. The recovery of methyl thiocyanate from several methionine derivatives and analogues were examined. Carbamoylmethionine was adopted a...
متن کاملDisopyramide determination by gas chromatography, liquid chromatography, and gas chromatography--mass spectrometry.
Disopyramide is determined in serum by gas chromatography with a nitrogen-selective detector, by liquid chromatography, and by gas chromatography--mass spectrometry. Comparable results are obtained with the three techniques, with a within-run and between-run precision of 5 to 10% (coefficient of variation). Least-squares analysis of data on patients' sera, analyzed first by gas chromatography (...
متن کاملRapid determination of glutethimide (Doriden) by gas-liquid chromatography.
drugs and nonbarbiturate sedatives, the clinical laboratory has been literally bombarded with requests for special toxicologic analyses. One of the most popular of the nonbarbiturate sedatives is glutethimide (Doriden, Ciba) or -ethyl--phenylglutarimide. This agent has sedative-hypliotic properties and the usual dose is 250-500 mg. taken at bedtime. McBay and Algieri have reported death occurri...
متن کاملDetermination of morphine by electron capture gas-liquid chromatography.
We describe a micromethod for determining as little as 0.1 microgram of morphine per liter of human urine. The procedure is about 20-fold more sensitive than are currently used gas-liquid chromatographic methods. It is particularly suitable for use as a confirmatory method for large-scale radioimmunoassay screening tests. The procedure involves extraction of morphine from urine and analysis of ...
متن کاملDetermination of valproic acid in human plasma using dispersive liquid-liquid microextraction followed by gas chromatography-flame ionization detection
Objective(s): Dispersive liquid-liquid microextraction coupled with gas chromatography (GC)-flame ionization detector was developed for the determination of valproic acid (VPA) in human plasma. Materials and Methods: Using a syringe, a mixture of suitable extraction solvent (40 µl chloroform) and disperser (1 ml acetone) was quickly added to 10 ml of diluted plasma sample containing VPA (pH, 1....
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1971
ISSN: 0264-6021,1470-8728
DOI: 10.1042/bj1240015pa