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Determination of Dialysate Creatinine by Micellar Electrokinetic Chromatography by Ewa Poboży; Anna Radomska; Robert Koncki; Stanisław Gła̧b is a Chemistry article available to read on EtoBox.

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Micellar electrokinetic chromatography with UV absorbance detection has been applied for fast and selective determination of creatinine in samples of postdialysate fluid. Optimization of the method was performed, with the best results being obtained using a 30 mM borate-100 mM sodium dodecyl sulphate background electrolyte, pH 9, with the detector set at 235 nm and an applied voltage of 17 kV across a fused-silica capillary of 67 cm/75 micro m I.D. The linear range of the technique was over 2 orders of magnitude (5-1000 micro M). The developed analytical procedure is useful for the monitoring of clinical hemodialysis treatment, because creatinine levels in real undiluted samples of postdialysate range from 80 to 350 micro M. The separation system allows the analysis of about six to seven samples of spent dialysate per hour in almost real time. The determinations are not influenced by other components of dialysate fluid nor by other surrogates extracted from patient blood. The results of analysis using the developed procedure and the kinetic spectrophotometric Jaffe method conventionally used in clinical settings for creatinine determination are fully comparable. Successful clinical

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Author

Ewa Poboży; Anna Radomska; Robert Koncki; Stanisław Gła̧b

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1873-376X)

Published

2003

Language

EN

Field

Chemistry (Physical Sciences)