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Radiometric determination of nanogram quantities of cholinesterase inhibitors

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Summary

A radiometric method is described for the determination of cholinesterase inhibitors in nanogram quantities, which is essentially a modification of the radiometric method developed for detecting cholinesterase inhibition in small samples of human blood. The scope of the technique is demonstrated with two examples of inhibitors: 3-hydroxy-N,N-dimethyl-cis-crotonamide dimethylphosphate (Bidrin) and 2-isopropoxyphenyl-N-methylcarbamate (Arprocarb). The first compound was determined in the range 0.05–0.6 ng, the latter from 5 to 160 ng. The standard deviation was 10–14%.

Zusammenfassung

Eine radiometrische Methode zur Bestimmung von Nanogrammengen Cholinesterase-Inhibitoren wurde beschrieben, die im wesentlichen auf der radiometrischen Bestimmung der Cholinesterase im Blut beruht. Das Prinzip des Verfahrens wird an zwei Beispielen erläutert: der Bestimmung von 3-Hydroxy-N,N-dimethyl-cis-crotonamid-dimethylphosphat (Bidrin) und von 2-iso-Propoxyphenyl-N-methylcarbamat (Arprocarb). Die erstgenannte Verbindung wurde in Mengen von 0,05 bis 0,6 ng, die andere in Mengen von 5 bis 160 ng bestimmt. Die Standardabweichung betrug 10 bis 14%.

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Marchart, H. Radiometric determination of nanogram quantities of cholinesterase inhibitors. Mikrochim Acta 56, 669–673 (1968). https://doi.org/10.1007/BF01224082

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