منابع مشابه
Analysis of krypton-85 and krypton-81 in a few liters of air.
Long-lived radioactive krypton isotopes, (81)Kr (t1/2 = 229,000 year) and (85)Kr (t1/2 = 10.76 year), are ideal tracers. (81)Kr is cosmogenic and can be used for dating groundwater beyond the (14)C age. (85)Kr is a fission product and can be applied in atmospheric studies, nuclear safety inspections, and dating young groundwater. It has long been a challenge to analyze radio-krypton in small sa...
متن کاملMeasurement of intrarenal anatomic distribution of krypton-85 in endotoxic shock in dogs.
Renal blood flow distribution was measured in control dogs and dogs in endotoxic shock by utilizing a modification of 85Kr washout. Kidneys, injected with 85Kr via a renal arterial cannula, were removed at several specific intervals after injection, rapidly frozen, and sectioned transversely so that pieces of tissue could be isolated and counted for radioactivity. Control outer cortical blood f...
متن کاملUse of Krypton-85 in the Study of Hypoxia in Porto-pulmonary Bilharziasis (schistosomiasis).
BRITS 1021 observations it was found that the immediate effect of the adrenergic drugs was similar. To obtain a measure of the duration of effect of the different inhalants, serial assessments were continued for three and a half hours after each inhalant therapy on two groups of asthmatic subjects containing 12 subjects in each group. From these serial studies it was found that the inhalants ga...
متن کاملKrypton-85 in the Detection of Intracardiac Left-to-right Shunts.
ANUMBER of methods have been developed for detecting left-to-right shunts during cardiac catheterization of which the most frequently employed is determining the difference in oxygen saturations. This method has limited application in the presence of small shunts, however, since the minimal changes are often within the error of this method.' Therefore, other more sensitive technics have been em...
متن کاملIntrarenal Distribution of Nutrient Blood Flow Determined with Krypton 85 in the Unanesthetized Dog.
• The development of the couutercnrrent hypothesis as an explanation for the osmotic gradient from cortex to papilla of the kidney has again stimulated investigation of the intrarenal distribution of blood flow. Theoretical considerations have emphasized the necessity of a relatively low medullary blood flow for the maintenance of this gradient. However, present methods of measuring renal blood...
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ژورنال
عنوان ژورنال: Analytical Chemistry
سال: 1959
ISSN: 0003-2700,1520-6882
DOI: 10.1021/ac60145a012