In this quantitative fluorometric method, diacetylmonoxime is used for the determination of
the urea. The products of the reaction of urea with diacetylmonoxime in acid solution exhibit …

In laboratory medicine, the application of automated routine analysis (= test kits) has grown
enormously in recent years. This has led to a great variety of test kits, using often different …

A reversed-phase liquid-chromatographic procedure is presented for quantitation or uric
acid in human serum, with absorbance measured at 292 nm. The mobile phase was sodium …

The reagent is modified as follows: Serum chromogens are destroyed by trisodium
phosphate. The use of phosphotungstic acid eliminates the tungstate and sulfate anions, a …

Because numerous substances, endogenous compounds as well as xenobiotics, interfere
with determination of uric acid and creatinine, we have devised a more nearly specific …

We examined the stability of uric acid in dilute aqueous ammonium hydroxide solution by
mass spectrometry. Uric acid decomposes in ammonium hydroxide even as dilute as 15 …

A capillary gas chromatographic—mass spectrometric method for the simultaneous
determination of stable isotopically labelled l-histidine (l-[3, 3-2 H 2, 1′, 3′-15 N 2] …

A simple method is described for directly determining serum urea nitrogen, wtihout
deproteinization. The urea in 20 µl of serum or plasma is reacted with diacetylmonoxime in …

-Precise, absolute abundance meas-urements for nuclear reactor problems have been
accomplished through im-proved ion source optics and develop-ment of a fast pulse …

The requirements for the quantitative analysis of organic substances in various biological
matrices continually emphasize lower limits of detection coupled with the preservation of …