Abstract
Manual and automatic determinations of Sarin with a fluoride selective electrode after alkaline hydrolysis are presented. Comparison with a classic colorimetric method shows excellent agreement between the two methods.
Enzymatic hydrolysis (acetylcholinesterase) measured with an enzyme-electrode, yields no results: the assumption that Sarin loses F− upon reaction with cholinesterase is proved to be incorrect.
Zusammenfassung
Ein manuelles und ein automatisches Verfahren zur Bestimmung von Sarin nach alkalischer Hydrolyse durch Anwendung einer fluoridselektiven Elektrode werden beschrieben. Der Vergleich mit einem klassischen colorimetrischen Verfahren zeigt hohe Übereinstimmung der Resultate beider Methoden.
Die enzymatische Hydrolyse (Acetylcholinesterase) unter Anwendung einer Enzymelektrode, gibt keine Resultate: die Annahme, daß Sarin bei der Reaktion mit Cholinesterase F− verliert, ist nicht richtig.
References
Baum, G.: Determination of acetylcholinesterase by an organic substrate selective electrode. Ann. Biochem. 39, 65–72 (1971)
Baum, G., Ward, F. B.: Ion-selective electrode procedure for organophosphate pesticide analysis. Anal. Chem. 43, 947–948 (1971)
Frant, M. S., Ross, J. W., Jr.: Use of total ionic strength adjustment buffer for electrode determination of fluoride in water supplies. Anal. Chem. 40, 1169–1171 (1968)
Guilbault, G. G.: Enzyme electrode probes. Pure Appl. Chem. 25, 727–740 (1971)
Guilbault, G. G., Lubrano, G. J.: Enzyme electrode for glucose. Anal. China. Acta 60, 254–256 (1972)
Guilbault, G. G., Shu, F. R.: Enzyme electrodes based on the use of a carbon dioxide sensor. Anal. Chem. 44, 2161–2166 (1972)
Koelle, G. B.: Anticholinesterase agents. In: The pharmacological basis of therapeutics, pp. 442–465. (Goodmand, L., Gilman, A., Eds.) London: The Macmillan Company 1970
Llenado, R. A., Rechnitz, G. A.: β-glucosidase enzyme determination with ion-selective electrodes. Anal. Chem. 44, 468–471 (1972)
von Storp, L. H., Guilbault, G. G.: A new assay for cholinesterase potentiometric determinations in flow streams. Anal. Chim. Acta 62, 425–430 (1972)
Voss, G.: Cholinesterase inhibition autoanalysis of insecticidal organophosphates and carbamates. J. AOAC 52, 1027–1034 (1969)
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De Clercq, H., Mertens, J. & Massart, D.L. Fluoride selective electrode procedure for fluorated organophosphate cholinesterase inhibitors. Arch Toxicol 31, 185–191 (1973). https://doi.org/10.1007/BF00310397
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DOI: https://doi.org/10.1007/BF00310397