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...
متن کاملBioavailability of soilborne lead in adults, by stable isotope dilution.
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 ...
متن کاملLow Blank Preconcentration Technique for the Determination of Lead, Copper, and Cadmium in Small-Volume Seawater Samples by Isotope Dilution ICPMS.
A simple low-blank method is described for the analysis of Pb, Cu, and Cd in seawater using Mg(OH)(2) coprecipitation and isotope dilution inductively coupled plasma mass spectrometry (ICPMS). Here, 20-40 μL of 9 M aqueous NH(3) is mixed into a 1.3 mL seawater sample spiked with enriched isotopes of Pb, Cu, and Cd. After centrifugation, the supernatant is discarded and the Mg(OH)(2) precipitate...
متن کاملBlank Correction for ∆14c Measurements in Organic Compound Classes of Oceanic Particulate Matter
Contaminant carbon (blank carbon) was studied for its impact on the carbon isotope measurements (∆14C and δ13C) of 3 organic compound classes of oceanic particulate organic matter. Two methods of blank correction and associated uncertainties were studied. First, the carbon blanks were quantified manometrically and the isotope ratios of the blank carbon were measured directly. Second, the isotop...
متن کاملTubulin Determination by an Isotope Dilution-vinblastine Precipitation Method
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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ژورنال
عنوان ژورنال: Analytical Chemistry
سال: 2015
ISSN: 0003-2700,1520-6882
DOI: 10.1021/acs.analchem.5b02924