The determination of 3,5-dinitrosalicyl-(5-nitrofurfurylidene)hydrazide (nifursol) in animal feeding stuffs by electron-capture gas chromatography

Abstract

A method is described for the determination of 3,5-dinitrosalicyl-(5-nitrofurfurylidene)hydrazide (nifursol) in animal feeding stuffs. The additive is extracted from the feed with acetonitrile, and after further clean-up with carbon disulphide the nifursol is reacted with boron trifluoride-methanol complex. The product, methyl 3,5-dinitrosalicylate, is determined by gas chromatography with an electron-capture detector.