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Differential pulse-polarographic determination of adenine, adenosine and mono-, di- and tri-phosphate of adenosine

Bestimmung von Adenin, Adenosin sowie Adenosinmono-, -di- und -triphosphat durch Differential-Puls-Polarographie

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Zusammenfassung

Die Anwendbarkeit der Differential-Puls-Polarographie zur quantitativen Spurenbestimmung von Adenin, Adenosin, Adenosin-3′-monophosphat, Adenosin-5′-monophosphat, Adenosin-5′-diphosphat und Adenosin-5′-triphosphat wurde geprüft und optimale Bedingungen ausgearbeitet (Pulsamplitude 100mV, Abtastgeschwindigkeit 2 mV/s, Tropfzeit 2s). Der Einfluß des pH-Wertes wurde untersucht und der optimale pH für maximale Empfindlichkeit bestimmt. Die Nachweisgrenzen für Adenin, Adenosin und A-5′-MP betragen etwa 2,2 · 10−6M, 1,5 · 10−6M bzw. 2,99 · 10−6M, für die übrigen Adenosinnucleotide 4,45 · 10−6M. Die Brauchbarkeit der Methode ergibt sich aus der Konstanz der i DPP/C-Werte.

Summary

The application of differential pulse polarography for the quantitative trace determination of adenine, adenosine, adenosine-3′-monophosphate, adenosine-5′-monophosphate, adenosine-5′-diphosphate and adenosine-5′-triphosphate has been investigated. Optimum conditions were found (pulse amplitude 100 mV, scan rate 2 mV · s−1, drop time 2s). The effect of pH was studied, and the optimum pH was determined to give the highest sensitivity. The detection limit for adenine, adenosine and A-5′-MP is ca. 2.2 ×10−6M, 1.5×10−6M and 2.99×10−6M, respectively; for the other adenosine nucleotides it is 4.45×10−6M. The validity of this method is supported by the constancy of the i DPP/C values.

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Temerk, Y.M., Kamal, M.M. Differential pulse-polarographic determination of adenine, adenosine and mono-, di- and tri-phosphate of adenosine. Z. Anal. Chem. 305, 200–203 (1981). https://doi.org/10.1007/BF00492616

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  • DOI: https://doi.org/10.1007/BF00492616

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