Direct determination of calcium, magnesium, sodium and potassium in water by flow injection flame atomic spectroscopy, using a dilution chamber |
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| Authors: | M de la Guardia V Carbonell A Morales and A Salvador |
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| Institution: | (1) Department of Analytical Chemistry, University of Valencia, 50 Dr. Moliner St., E-46100 Burjassot, Valencia, Spain |
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| Abstract: | Summary A simple procedure to carry out the direct analysis of calcium, magnesium, sodium and potassium in water by flow injection analysis (FIA) using flame atomic absorption spectroscopy (AAS) or flame photometry (FP) has been developed, using a well stirred dilution chamber to extend the calibration range, and both a double injector and the merging zone technique to add a lanthanum solution to samples and standards. The results obtained in the analysis of real samples agree with those found by a batch flame atomic procedure. The use of the dilution chamber makes it possible to carry out the calibration using the dilution profile of a single concentrate standard for each element, and an empirical dilution equation, which could be employed for all the elements is determined in each work session.
Direkte Bestimmung von Calcium, Magnesium, Natrium und Kalium in Wasser durch Fließinjektions-Flammen-Atomspektroskopie unter Verwendung einer Verdünnungskammer |
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