The determination of sodium in small volumes of fluid by flame photometry.
نویسنده
چکیده
منابع مشابه
Evaluation of the total analytical error in the flame photometry method
Background and Objectives: For total analytical error, imprecision (SD) and bias, performance goals for laboratory tests have most often been developed. A total analytical error goal requires that the combination of errors from all sources (random and systematic errors) be within some acceptable limit. M...
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A method is described for the measurement of magnesium in biological materials and has been applied to the Unicam flame spectrophotometer SP 900. Samples were diluted in 10 mM strontium ethylenedinitrolo tetraacetate (EDTASr), 10 mM potassium carbonate, giving final magnesium concentrations of about 0.1 to 0.2 mM. The EDTASr almost eliminated the depression of magnesium emission by interfering ...
متن کاملSimultaneous Determination of Sodium and Potassium in Small Volumes of Fluid by Flame Photometry
INTRODUCTION In two earlier papers (Ramsay, 1950; Ramsay, Falloon & Machin, 1951) a method was described by which it was possible to determine the concentration of sodium in samples of fluid of the order of io~ cu.mm. in volume. This method has now been extended to include the determination of potassium simultaneously upon the same sample. It is still in the experimental stage of development; w...
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With electrolyte reference fluid (ERF)00, results from Kodak Ektachem slides for the direct potentiometric assay of sodium in plasma were significantly correlated with results from flame photometry, but also appeared to be systematically higher, especially in hypernatremic patients. Indirect potentiometry with the Technicon RA-1000 yielded intermediate values. In 23 hypernatremic patients with ...
متن کاملPotentiometric analysis for sodium and potassium in biological fluids.
Results obtained with a potentiometric analyzer, NOVA 1, specific for sodium and potassium, were compared with those by flame photometry. Both instruments showed linearity within a physiological range of sodium and potassium concentrations and had similar precisions. Volume displacements from addition of albumin or Intralipid to aqueous samples yielded the predicted lower flame-photometric resu...
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ورودعنوان ژورنال:
- The Journal of experimental biology
دوره 27 3-4 شماره
صفحات -
تاریخ انتشار 1950