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Determination of microgram amounts of thiuram disulphides by means of the induced iodine-azide reaction


, : Determination of microgram amounts of thiuram disulphides by means of the induced iodine-azide reaction. Analytica Chimica Acta 243(2): 201-205

A simple method for the determination of thiuram disulphides was developed. These compounds induce the iodine-azide reaction after cleavage of the Si—¸S bond. The consumption of iodine in this reaction is proportional to the amount of the inductor. Inducing properties of the compounds examined were estimated from an induction coefficient ([I]/[S]) which indicates how many times the consumption of iodine in the induced reaction is higher than that in the iodimetric reaction. Under analytically optimum conditions the induction coefficients are in the range 176-211 for eight thiuram disulphides. The identical behaviour of thiuram disulphides in the induced reaction and of the corresponding dithiocarbamates allows the analysis of their mixture in the same sample. The method is sensitive, selective, accurate, cheap and rapid. Other compounds that induce the iodine-azide reaction interfere.

US$19.90

DOI: 10.1016/s0003-2670(00)82561-1


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