Journal Article

Fluorimetric Determination of Aluminum Traces in Hemodialysis Solutions Using Mordant Red 19

M.A. Raggi, C. Sabbioni, R. Mandrioli, Q. Zini and G. Cantelli Forti

in Journal of Analytical Toxicology

Volume 23, issue 2, pages 94-98
Published in print March 1999 | ISSN: 0146-4760
Published online March 1999 | e-ISSN: 1945-2403 | DOI: http://dx.doi.org/10.1093/jat/23.2.94
Fluorimetric Determination of Aluminum Traces in Hemodialysis Solutions Using Mordant Red 19

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A sensitive and accurate method for the spectrofluorimetric determination of trace levels of aluminum in hemodialysis solutions using Mordant Red 19 as the complexation reagent has been developed. The optimal experimental conditions for the concentration of fluorimetric reagent, pH, temperature, and the specific type of matrix are reported. The emission of the fluorescent metal chelate was measured at 555 nm, excitation at 478 nm. Linearity between emission intensity and aluminum concentration was found in the 2–20 ppb range in standard aluminum solutions. Limit of detection was 0.4 ppb. The aluminum amounts in some commercial hemodialysis solutions were determined by means of the extrapolation method. The proposed method proved to be suitable in terms of sensitivity and accuracy for the determination of aluminum in dialysis fluids.

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Subjects: Medical Toxicology ; Toxicology (Non-medical)

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