Potassium and sodium measurements at clinical concentrations using phase-modulation fluorometry
نویسندگان
چکیده
منابع مشابه
Multifrequency and Modulation Fluorometry 1 Phase
General Aspects Determination of characteristic fluorescence parameters i.e. spectral properties, quantum yields, polarizations, and lifetimes, is important in the study of excited states of atoms, molecules, and crystals and also for diagnostic purposes in the physical, chemical, biological, and medical sciences. The appeal of fluorescence methodologies lies in their intrinsic sensitivity and ...
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Shyr and Young recently published a better concerning falsely bow values for sodium and potassium obtained when using flame photometry including sample dilution (Clin. Chem. 26: 1517, 1980). I have found that falsely low values occur when using the IL-144 autodilutor and aqueous calibrating solutions, mostly because of differences between serum and calibrator viscosity, i.e., the calibrators mo...
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A new gated form of phase fluorometry for measuring lifetimes is presented. The technique uses a square-wave excitation and gates the detector on only during the off period of the excitation. Using a long-lived sample, this eliminates or reduces errors from scattered light and short-lived fluorescences. Using a square-wave modulated excitation source with a 50% duty cycle, traditional data trea...
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Potassium is the principal intracellular cation with sodium being the principal extracellular cation. Maintenance of the distribution of potassium and sodium between the intracellular and the extracellular compartments relies on several homeostatic mechanisms. This study analysed the effect of blood storage on the concentrations of potassium and sodium in stored blood and also determine any var...
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ژورنال
عنوان ژورنال: Sensors and Actuators B: Chemical
سال: 1999
ISSN: 0925-4005
DOI: 10.1016/s0925-4005(99)00235-x