منابع مشابه
Isotope Dilution Residue Function
We analyzed the isotope dilution residue function from a single cardiac chamber for an arbitrary inlet distribution of tracer and arbitrary mixing within the chamber, and established a general relationship between cardiac output and the chamber residue function. In our experiments, we made simultaneous temperature measurements in three left ventricular chamber subregions of the dog subjected to...
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Using stable isotope dilution, we determined the bioavailability of soilborne lead (Pb) in human adult volunteers. Soil from a residential yard at a mining-impacted federal Superfund site that had negligible amounts of other priority pollutants was dried and screened through a 25-micron mesh sieve. The < 250-micron fraction, which likely represents that ingested via hand-to-mouth activity, was ...
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BETH BURNSIDE, CHRIS KOZAK, and F. C. KAFATOS. From the Marine Biological Laboratory, Woods Hole, Massachusetts 02543 . Dr . Burnside's present address is the Department of Anatomy, School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104 . Dr . Kozak's present address is the Department of Biology, Yale University, New Haven, Connecticut 06520 . Dr. Kafatos' present addr...
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Speciated isotope dilution mass spectrometry is a technique that uses mass spectrometer readings to determine the species-specific isotopic profile of a chemical element in solution. The problem admits several approaches, each with its own computational quirks. In our view, matrix methods are attractive because they are conceptually clear, easy to implement, and amenable to formal analysis. The...
متن کاملDetermination of urea kinetics by isotope dilution with [13C]urea and gas chromatography-isotope ratio mass spectrometry (GC-IRMS) analysis.
1. Stable urea isotopes can be used to study urea kinetics in humans. The use of stable urea isotopes for studying urea kinetic parameters in humans on a large scale is hampered by the high costs of the labelled material. We devised a urea dilution for measurement of the distribution volume, production rate and clearance of urea in healthy subjects and renal failure patients using the inexpensi...
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ژورنال
عنوان ژورنال: Analytical and Bioanalytical Chemistry
سال: 2014
ISSN: 1618-2642,1618-2650
DOI: 10.1007/s00216-014-7977-3